(a) Ca (b) Cu Give one example of cation and anion. Answer:The atomicity of the molecules are: Question 21. The resultant calcined solid composition was collected as the final cathode active product. Disclaimer B) a lithiation step, wherein the collected precursor product is mixed with lithium containing compounds, and optionally other dopants, to produce a final mixture, followed by calcining the final mixture to obtaining the cathode active material. They argue that the average person consumes too much sodium from his or her diet. These devices include mobile-phones, portable computers, wireless power tools, hybrid and pure electric automobiles, and the like. However, there has been a push to reduce the amount of sodium most people ingest every day: avoid processed and manufactured foods, read labels on packaged foods (which include an indication of the sodium content), dont oversalt foods, and use other herbs and spices besides salt in cooking. Do not use numerical prefixes if there is more than one ion necessary to balance the charges. The formula Na2Cl2 also has balanced charges, but the convention is to use the lowest ratio of ions, which would be one of each. When atoms gain or lose electrons, they usually gain or lose a characteristic number of electrons and so take on a characteristic overall charge. Question 1. 12. DOCKETED NEW CASE - READY FOR EXAMINATION. Therefore, selection of the cathode active material is critical for improving the performance of, and lowering the cost of, Li-ion batteries. (iii) CO 2 is one mole of carbon-dioxide i.e., it contains 6.022 x 10 23 molecules of carbon dioxide. (C6H12O6), The mass of 1 mole of substance in grams; it is numerically equal to the Formula weight in AMU units, What is the molar mass of glucose? in their paper in the Journal of Power Sources 146; 626-629 (2005). About 1 gram of this grained lithium hydroxide monohydrate was then mixed with 2 grams of precursor material collected from Example 1, and the mixture was transferred into an alumina crucible. Thus, the formula of barium nitrate is Ba(NO 3) 2. Answer:The sum of the atomic masses of all the atoms in a molecule of the substance is expressed.in atomic mass unit. The cathode electrode was prepared with components of 90% final cathode active product, 6% carbon black and 4% PVDF (Polyvinylidene fluoride). (ii) 7 g of Na It forms phosphoric acid and ammonia. Question 3. Find the molecular mass of H20. What is the ratio of the number of molecules in both the samples? Write the balanced equation for the reaction that occurs when ethanol, C2H5OH (l), burns in air. Coal usually contains between 0.5 and 3 percent nitrogen on a dry weight basis. During its charge and discharge cycles, lithium ions are shuttled between the anode and cathode active materials through the electrolyte. The valency of nitrogen in NH3 is Answer:The chemical formula of the compound is a symbolic representation of its composition, e.g., chemical formula of sodium chloride is NaCl. Adipic acid, H2C6H8O4, used to produce nylon, is made commercially by a reaction between cyclohexane (C6H12) and O2: a) 25.0 g C6H12 x (1 mol C6H12/84 g C6H12) x (2 mol H2C6H8O4/2 mol C6H12) x ( 146 g H2C6H8O4/1 mol H2C6H8O4) = 43.5 g H2C6H8O4. We should put a cork on the mouth of the flask so that no other gases in the air combine or get added into the reaction, neither any gas formed in the reaction should escape. What is atomic mass unit? (c) 0.5 mole (d) 2 moles NCERT Textbook for Class 9 Science Page 32 SCR selectively reduces NOx emissions by injecting NH3into the exhaust gas upstream of a catalyst. Question.16. Answer:Relative atomic mass: It can be defined as the number of times one atom of given element is heavier than 1/12 th of the mass of an atom of carbon-12. Pick up the wrong pairs/combination But Microsoft is also one of the worlds largest corporations, and praising such colossal industry consolidation doesnt feel quite like the long-term consumer benefit Microsoft is making it out to be. We write quality papers for our clients as we have employed highly qualified academic writers from all over the world. Elements > Sodium, hydrogen, carbon and oxygen State 3 points of difference between an atom and an ion. It takes one mole of ammonia to reduce one mole of NO, and two moles of ammonia to reduce one mole of NO2. Answer:In a chemical reaction mass can neither be created nor destroyed. Write the balanced equation for the reaction that occurs when ethylene glycol, C2H4(OH)2 burns in air. The mole is a useful quantity because one mole of a substance always contains the same number of entities of the substance. The liquid filtrate portion from this filtration is preferably recycled to the reaction system, for further reaction. How many grams of carbon dioxide can be absorbed by 1.00 g of lithium hydroxide? Below the symbol of each element, we write down its valency. What mass of O2 is consumed in the combustion of 1.00 g of propane? Question1. Formula also represents one mole of molecules of the substance. The chlorine is in the form of a negatively charged ion, not the neutral element. 2 H represents 2 separate atoms of hydrogen; H2 represents 1 molecule of hydrogen and 2H2 represents 2 molecules of hydrogen. It is expressly understood, however, that the examples and drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the invention. However, this is not always the case. The atomicity of K2Cr2O7 is O2 > atomicity is 2 (ii) P043- ion? Chemistry. The following diagram represents a chemical reaction in which the red spheres are oxygen atoms and the blue spheres are nitrogen atoms. Answer:(i) 0.5 mole of C atom: Ammonium bisulfate is a very corrosive and sticky material that can plug downstream heat transfer equipment, reducing performance or even causing plant shutdown. (c) Zinc carbonate Answer:Cation => Na+ Furthermore, whereas the combustible composition of natural gas is primarily methane (CH4), the syngas combustible components are carbon monoxide (CO) and hydrogen (H2), with an H2/CO ratio generally ranging from 0.6 to 0.82. (b) 4 moles of aluminium atoms (Atomic mass of aluminium = 27)? 4 0 obj Answer:The molar mass of the following: [Unit is g] Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur. Ammonia (NH3) always contains two elements nitrogen and hydrogen combined together in the same ratio of 14:3 by mass. Which of the following is the balanced chemical reaction for the combination reaction between Lithium metal and Oxygen gas? First, the pressure loss across the SCR catalyst bed increases the turbine back-pressure, thereby decreasing gas turbine output by approximately one-half percent. (c) Polyatomic ions: When more than two atoms combine together and act like an atom with a charge on it is called polyatomic ion. Answer:The reaction of burning of carbon in oxygen may be written as: TESLA, INC., CALIFORNIA, Free format text: Calculate the percentage of potassium, by mass, in K2PtCl6. A few elements, all metals, can form more than one possible charge. E.g., In water, the ratio of the mass of hydrogen to the mass of oxygen H : O is always 1:8. What is meant by atomic mass, gram atomic mass of an element? Again, no numerical prefixes appear in the name. Thus, the process provides a system wherein the metals are added continuously at the same ratio at all times to produce a precursor with uniform element distribution in each particle, or wherein the metals are added continuously at different ratios with time, in order to produce a precursor having non-uniformed element distribution in each particle. NO + O2 NO2 Others you may not recognize, but they are all ionic sodium compounds with some negatively charged ion also present. Small levels of ammonia (NH3) and hydrogen cyanide (HCN) are produced, however, and must be removed during the syngas cooling process. Answer. a) How many nitric acid molecules are in 4.20 g of HNO3? 2 0 obj One mole of ammonium nitrite contains: A) 2 moles of nitrogen atoms B) 4 moles of hydrogen atoms C) 2 moles of oxygen atoms D) All of A, B, and C A 42.7 gram sample of potassium nitrate contains how many grams of potassium? 1 : 8 = 3 : x In terms of the range of influence or potential for long-range transport, nitric acid or organic nitrate (peroxyacetylnitrate, PAN) derived from NOx emissions, and ammonia have similar lifetimes in the atmosphere and, thus, similar potential for long-range transport. For example, Chinese Patent CN104409723B granted in 2016 discloses an electrochemical preparation method using a lithium mixed metal oxide for the production of the cathode active material in lithium ion batteries. Ammonium carbonate contains NH 4 + and CO 3 2-ions: this is one positive charge and two negative charges to make the number of charges the same, we need two NH 4 + ions and one CO 3 2- ion Calculate the formula unit mass of NaCl and CaCl 2. For elements that exist as atoms, their chemical formulae represent their atoms. Give one example. The process can, however, also be applied to produce particles with non-uniform elemental distribution inside each particle, such as compositionally gradient or layered particles of cathode material precursors in a multi-stage reaction system, by adding different metals at different times. Alchemists knew nitric acid as aqua fortis (strong water), as well as other nitrogen compounds such as ammonium salts and nitrate salts. The non-magnetic portion was filtered and washed by distilled water, and all of the filtrate, together with the wash water, was returned back to the reaction vessel. He is given a bill which amounts 100% charges of gold. NOx refers to both nitric oxide (NO) and nitrogen dioxide (NO2). It is in the International System of Units (SI) and its short form is "mol". Each oxygen molecule consists of two oxygen atoms. Determine the speed of the prototype to ensure Reynolds number similarity. Answer:(a) Quick lime > Calcium oxide A bat flies toward a moth at speed $7.5 \mathrm{~m} / \mathrm{s}$ while the moth is flying toward the bat at speed $5.0 \mathrm{~m} / \mathrm{s}$. Sodium is also present in our diet. E.g., Ammonium NH4+ How do you Calculate the Molar Mass of a Substance? Atoms cannot be created nor destroyed in a chemical reaction. Change > +2 -2 endobj Table: Chemical formulae of some elements, Table: Chemical formulae of some compounds. What mass of water is produced in the combustion of 23.6 g of methanol? As a key feature, in the precursor preparation process, the bulk of the aqueous solution used for the wet chemical reaction can be recycled back to the reactor, so that the total process has little or no effluent generated during production of the cathode precursor material. Only one of them, the ammonium ion, is a cation; the rest are anions. In a typical ammonia injection system, anhydrous ammonia is drawn from a storage tank and evaporated using a steam- or electric-heated vaporizer. Use parentheses where required. What is the molar mass for potassium nitrate? The periodic table (Figure 3.5 A Simple Periodic Table) can be used to determine which elements are metals and nonmetals. Which among the following is not a postulate of Daltons atomic theory? Mass of 1 mole of C02 molecule = 6.022 x 1023 molecules = 44 g Answer:H2O ratio by mass of combining elements 2 : 16 >1 : 8 (H : O) (d) Hydrochloric acid, HCl Due to its limited specific-capacity, and its high cost of production and raw materials, the cathode active material is usually the most expensive component in the Li-ion batteries. (b) 6.022 x 1023 ions of sodium = 23 g of Na Employees Only Why is the mass have different expressions i.e., u and g? How many chlorine atoms are in 12.2 g of CCl4? Calculate 6) The density of ethylene glycol (antifreeze, HOCH What is the molarity of a solution in which 0.850 grams of ammonium nitrate are WebAmmonium carbonate contains NH 4 + and CO 3 2-ions: this is one positive charge and two negative charges to make the number of charges the same, we need two NH 4 + ions and one CO 3 2- ion In addition, NOx (as NO2) is a chronic toxin and an essential precursor to the formation of tropospheric ozone. Symbol > Ca O Calculate the number of aluminium ions present in 0.051 g of aluminium oxide. Because each formula unit of LiCl contains exactly 1 Li atom, this number is equal to the number of Li atoms in the sample. Which law of chemical combination will govern your answer? Explain how to make one liter of a 1.25 molal sodium hydroxide solution. We can obtain the molecular formula for any compound from its empirical formula if we know either the molecular weight or the molar mass of the compound. 85.11 g B. 1.00g C4H10 + 3.59g O2 = 4.59 g total to reach. Learn the characteristic charges that ions have. CSUS Chemistry 1A Nomenclature Worksheet Dr. Mack Page 3 of 9 S S2 sulfide ion IA H H hydride ion Polyatomic Ions Polyatomic ions are ions that are composed of two or more atoms that are linked by covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group. (a) the mass of one atom of oxygen What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas? No, because both have the empirical formula of CH. That is, with first atom we write the valency of second atom (as a subscript); and with the second atom we write the valency of first atom (as subscript). Step-3 : Write the valency of each ion below its symbol Step-4 : Reduce the valency numerals to a simple ratio by dividing with a common factor, if any. This can include milling and/or washing of these materials with a typically lowered pH liquid obtained from the liquid and solid separation step. 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Determine the number of cations and anions by balancing the positive and negative charges. What is the empirical formula of ascorbic acid? In this reaction, there are two reactants, ethylene, C2H4, which is shown, and oxygen, O2, which is not shown; and two products, CO2 and H2O, both of which are shown. Chapter 4. Molar mass of oxygen atoms = 16 g Class 9 Science NCERT Textbook Page 42 The environmental effects of releasing too much NOx into the atmosphere are listed below. 4. Write the number of cations and anions as subscript numbers. This cycle is referred to as the "regeneration cycle," as shown below. WebCSUS Chemistry 1A Nomenclature Worksheet Dr. Mack Page 3 of 9 S S2 sulfide ion IA H H hydride ion Polyatomic Ions Polyatomic ions are ions that are composed of two or more atoms that are linked by covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group. Mole of carbon dioxide = 22/44 = 0.5 mole, Question 9. Atoms are super super tiny! All of the remaining liquid filtrate, together with the wash water, was returned to the reaction vessel. For example, consider the ionic compound between Na+ and Cl. This responsibility may not be borne by the plant since catalyst suppliers often collect and recycle spent catalyst as part of their contract. The use of so many sodium compounds in prepared and processed foods has alarmed some physicians and nutritionists. Question 14. Commonly used for compounds containing principally Carbon and Hydrogen. Owner name: SPRINGPOWER INTERNATIONAL INC., CANADA, Free format text: There are several things to notice about the ions in Table 3.2. Write the proper ionic formula for each of the two given ions. Therefore, in the wet chemical process described above for making the precursor, there are no additional or new chemicals added to the liquid after the solid and liquid separation has occurred. Propane, C3H8, is a common fuel used for cooking and home heating. a) 0.512 g CO2 x (1 mol/ 44.0 g CO2) x (1 mol C/1 mol CO2) x (12.01 g/1 mol C) = 0.1397 g C, The relationship between the coefficients and the number of molecules in the BALANCED reaction are the relative numbers of moles. Second, most atoms form ions of a single characteristic charge. Answer:The formulae are. NOx is a main constituent in the formation of ground-level ozone which causes severe respiratory problems. Answer:(a) Atoms of some elements are not able to exist independently. A compound that contains ions and is held together by ionic bonds is called an ionic compound. No Fear Act, Strategic Systems Analysis and Engineering, Science-based Artificial Intelligence and Machine Learning Institute (SAMI), Center for Sustainable Fuels and Chemicals (CSFC), Office of Energy Efficiency and Renewable Energy, Cybersecurity, Energy Security, and Emergency Response, FECM Extramural R&D Final Technical Reports, Summary Information for Extramural R&D Awards, Environmental Performance of IGCC Power Plants, Commercial Power Production based on Gasification, Gasification-based Cogeneration/Coproduction, DOE Supported R&D for Production of Power, NETL Research, Development and Demonstration in Solid Oxide Fuel Cells for Power Generation from Coal. The bat emits a sound wave of $51.35 \mathrm{kHz}$. Hence FeS is iron(II) sulfide, while Fe2S3 is iron(III) sulfide. The symbol of cadmium is That is, formula also represents 6.022 10 23 molecules of the substance. As a result, the present invention thus provides a process for making lithium mixed metal oxides, while having little or no effluent generation. Answer:Ammonium sulphate The present process uses mixed metals as raw materials, in a wet chemical reaction with an oxidant, in order to make high-quality metal hydroxide precursors which can be used to prepare high-quality cathode materials after lithiation. How many atoms of Mg, O, and H are represented by the notation 3 Mg(OH)2? [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O. For such elements atoms form molecules and ions. Calculate the mass, in grams , of 0.433 mol of calcium nitrate. (c) Baking powder > Sodium hydrogen carbonate Introductory Chemistry - 1st Canadian Edition by Jessie A. Although NOx emissions from operating IGCC power plants are quite low as shown above, stricter regulations may require control to levels as low as 3 ppm in the heat recovery steam generator (HRSG) stack gas. Using the names of the ions, this ionic compound is named calcium chloride. The contribution of NOx or ammonia emissions from a single facility to any of these environmental problems is primarily determined by existing levels of NOx and ammonia in the area and the concentration of other pollutants in the atmosphere that react with the NOx or NH3. Example:The formula H2 indicates that one molecule of hydrogen element contains 2 atoms of hydrogen. Show that these observations are in agreement with the law of conservation of mass carbonate. Learn how BCcampus supports open education and how you can access Pressbooks. But due to the isotopes the masses were found in fractions instead of whole number. How many sulfur atoms are in 0.45 mol BaSO4? 9. <> Atomic mass of Al = 27 u) This is cobalt. If one mole of carbon atoms weigh 12 grams, what is the mass (in grams) of 1 atom of carbon? Question 1. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Aluminium 3 (a) Ca(OH)2 (d) H2S04 MgCl2 is magnesium chloridenot magnesium dichloride. Currently lithium mixed metal oxides, which contain mostly nickel, cobalt, manganese, and/or aluminum with other necessary dopants, are the main components used for the production of cathode active materials with high performance. Anions are negatively charged ion. Most of the commercially available systems are guaranteed to reduce NOx emissions to the 9 to 25 ppm range, depending on the manufacturer, the particular turbine model, and the application. The constituent particles of formula unit mass are ions and the constituent particles of molecular mass are atoms. The mole ratio between H and HO is #(2 mol H)/(2 mol HO)#.. However, the ammonia produced in the reaction is in its gaseous form and thus will not stay in the reaction system during the operation. If the element has more than one possible charge, the value of the charge comes after the element name and before the word ion. (iv) CO 2 contains 1 atom of carbon and two atoms of oxygen. The first letter of a symbol is always written as a capital letter (upper case) and the second letter as a small letter (lower case). Answer:2O > It represents 2 atoms of oxygen (cannot exist independently). 6. Also, zero emission of wastewater to the environment is claimed, and a continuous large-scale production method, with little effluent can be realized. Define a mole. In order to prevent ammonia salt formation, either the ammonia slip or the SO3must be greatly minimized. (c) 4 (d) 5 (d) Aluminium chloride Potassium > Kalium, Mercury > Hydrargyrum, Question 4. Step-5 : Cross the valencies. What is the empirical formula of caproic acid? Message Writing | Message Writing Format, Examples and How To Write a Message? a) How many glucose molecules are in 5.23 g of C6H12O6? The geometric configuration of the catalyst body is designed for maximum surface area and minimum obstruction of the flue gas flow path to maximize conversion efficiency and minimize back-pressure on the turbine. The chemical formula of an element is a statement of the composition of its molecule in which symbol tells us the element and the subscript tells us how many atoms are present in one molecule. E.g., 2Na + Cl2 > 2NaCl Samples can be analyzed for the d 15 N of ammonium and/or nitrate; analysis of total nitrogen is probably worthless. (b) Given mass of water = 20 g (c) 10 moles of sodium sulphite (Na2SO3) Compare this value with the mass of the earth (5.98 x 1024kg). Define molecule. Give the formula and name for each ionic compound formed between the two listed ions. Students also viewed. 4 moles of hydrogen atoms C. 2 moles of nitrogen atoms D. All of A, B, and C E. None of A, B, and C. 9. (ii) 1.5 mole of CO2 molecule: Therefore 3 g of carbon reacts with 8 g of oxygen to form 11 g of carbon dioxide. Question 7. Symbols are the first one or two letters of the elements name in English. The formula of ethanol is C2H5OH. A combination between a metal and nonmetal produces a solid. Rather than write the formula MgClCl, we combine the two chloride ions and write it with a 2 subscript: MgCl2. After about 60 minutes, 7.2 grams nickel metal powder and 0.8 grams cobalt metal powder was added into the reaction vessel hourly. metal oxidation in an aqueous solution or under moisture conditions. 0.561 g CO2 x (1 mol CO2/ 44.0 g CO2) x (1 mol C/1 mol CO2) x (12.0 g C/ 1 mol C) =. The catalysts active surface is usually a noble metal, base metal (titanium or vanadium) oxide, or a zeolite-based material. Which of the following is the correct molecular formula for dioxane? ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SPRINGPOWER INTERNATIONAL INC.;REEL/FRAME:055033/0591, Free format text: The mass of the flask before and after reaction do not change. For example, the core area of the cathode material particle can be nickel rich for higher capacity, while the surface area might be manganese, magnesium, or aluminum rich for stable interface with the electrolyte found in a lithium ion battery. The compound dioxane, which is used as a solvent in various industrial processes, is composed of C, H, and O atoms. Further, about 2% aluminum was also added in the form of aluminium nitrate which aluminium nitrate was prepared by dissolving aluminium hydroxide into 68% nitric acid. <> Formula represents a definite mass of the substance. APPLICATION DISPATCHED FROM PREEXAM, NOT YET DOCKETED, Owner name: (e) Nitric acid, HN03 = 1 x 1 + 1 x 14 + 3 x 16 = 1 + 14 + 48 = 63 g, Question 7. Solution: 1 g of gold sample contains. The South Coast Air Quality Management District designated SCONOx as the Best Available Control Technology (BACT) for natural gas-fired turbine engines. In general, it should be noted that lower pH values may cause low quality of the co-precipitation product while higher pH values may cause passivation of metals during the corrosion reaction. (Hint: The mass of an ion is the same as that of an atom of the same element. x = 8 x 3 Give the charge each atom takes when it forms an ion. The generated ammonia gas can be collected as a useful chemical or chemical precursor for other industries, such as, for example, the fertilizer industry. How many atoms are present in a Information from permits/permit applications on recent IGCC projects includes NOx emissions rates as shown in the accompanying figure. (a) 1 (b)3 (b) What is the ratio of gold and copper in the jewellery? Nickel-rich and manganese-rich quaternary metal oxide materials as cathodes for lithium-ion and lithium-ion polymer batteries, Low temperature lithiation of mixed hydroxides, Method for preparing layered core-shell cathode active materials for lithium secondary batteries, Positive electrode active material granular powder and method for producing same, and nonaqueous electrolyte secondary battery, Positive electrode active material precursor particulate powder and positive electrode active material particulate powder, and non-aqueous electrolyte secondary battery, 3v class spinel complex oxides as cathode active materials for lithium secondary batteries, method for preparing the same by carbonate coprecipitation, and lithium secondary batteries using the same, Nitrate process for producing transition metal hydroxide precursors, Precursor for cathode material with improved secondary battery performance and method for preparing the precursor, Li-Ni COMPLEX OXIDE PARTICLE POWDER AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, Electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery, Process for producing lithium transition metal oxides, A kind of method for preparing bobbles shape lithium titanate, Low temperature lithiation of hydroxides containing cobalt, nickel and manganese using a wet process, Syntheses of LiCoO2 for cathode materials of secondary batteries from reflux reactions at 130200 C, Lithium double oxide, its production and lithium secondary battery, Process to produce cathode materials for rechargeable li batteries, Polynary composite oxide material, preparation method and use thereof, Method for manufacturing positive electrode active material for lithium ion secondary battery, Process for preparing manganese composite oxide, Precursor of positive electrode active material for non-aqueous electrolyte secondary battery and its manufacturing method, and positive electrode active material for non-aqueous electrolyte secondary battery and its manufacturing method, Cobalt-manganese-based composite oxide and manufacturing method therefor, and application thereof, Precursor of positive electrode active material for nonaqueous secondary battery and method of producing the same, and positive electrode active material for nonaqueous secondary battery and method of producing the same, Production of cubic lithium-manganese double oxide, Information on status: patent application and granting procedure in general. For a cation, simply use the name of the element and add the word ion (or if you want to be more specific, add cation) after the elements name. This effluent treatment is very costly with a significant amount of energy consumption. of a substance or given element is heavier than 1/12 th of the mass of one atom of carbon-12. The overall reaction is shown as following equation: where Me represents at least one selected metal, preferably in solid metallic form, selected from the group consisting of nickel, manganese, cobalt, aluminum, and magnesium; Me represents at least one metal, preferably in their ionic form, selected from the group consisting of nickel, manganese, cobalt, aluminum, magnesium, zirconium, yttrium, titanium, vanadium, and molybdenum; Me. 1 mole of NaCl =23+35.5=58.5 g of NaCl Number of moles in 5085 g of NaCl =5085/58.5=0.1 moles Each NaCl formula unit=Na + + Cl =2 ions Question 39 A gold sample contains 90% of gold and the rest copper. Answer:Boron and oxygen compound > Boron + Oxygen (a) The elements that make up the substance. What is its molecular formula? The Haber process, also called the HaberBosch process, is an artificial nitrogen fixation process and is the main industrial procedure for the production of ammonia today. Answer: Question 2. 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