How many grams of Al2(CrO4)3 (HINT: F.M. = 401.96) would be required to obtain 12.00 g of oxygen?Place your answer in the box. For your calculation, use molar masses that have been rounded to the closest hundredths of a gram (two places to the right of the decimal point). Express your answer using only a number or numbers without text. Report your result in decimal notation and to the proper number of significant figures. All numbers are measured.

Q: 3 Cu + 8HNO3 -->3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many grams of water can be made…

A: Given, the chemical reaction as follows,3Cu+8HNO3→3Cu(NO3)2 +NO +4H2Omolar mass of element hydrogen,…

Q: How many moles of water H2O, contain 2.0 x 1022 molecules of water?  Express the quantity in moles…

A: Moles = Number of molecules / NA

Q: a. Quinoline, a starting compound for drugs, consists of C, H, and N. Combustion of such compounds…

A: Given: Compound contains only C, H and N. Mass of compound combusted = 9.71 mg = 0.00971 g.…

Q: Chloral hydrate (C2H3Cl3O2) is a drug formerly used as a sedative and hypnotic. It is the compound…

A: Hi, since you have posted multiple subpart question, we will answer the first three subparts. Kindly…

Q: Three elements, A, Q, and Z, have the molar masses indicated in the table below. Given a compound…

A: empirical formula has to be determined using the given data

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3(Si2O5)2(OH)2 An…

A: Given: chemical formula of the talc. To find : Total number of moles of oxygen in the sample.…

Q: molar weight

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Please provided a SUPER DETAILED answer as to how to come up with the correct answer. (And if there…

A: In the question we have given mass of N2O formed = 8.75gm Since moles = mass / molecular mass and…

Q: 1. Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor: 4NH3 + 502 ----> 4NO +…

A: Limiting reactant is the reactant that gets consumed first.  To know which is the limiting reactant,…

Q: For the balanced chemical reaction 4Al + 3O2 → 2Al2O3 how many grams of Al2O3 can be made by…

A:

Q: 3 Cu + 8HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation, how many grams of water can be made…

A:

Q: hat are the percentages of carbon, hydrogen, and nitrogen in the compound? What is the empirical…

A: Solution: So this question is from the stoichiometry. We  have general knowledge of formulae for…

Q: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

Q: Provide answer to the following

A: Density of a particular substance is the compactness of atoms present in it. Density can be…

Q: One of the steps in the commercial process for converting ammonia to nitric acid involves the…

A: Given  Reaction  NH3 + O2    →  NO  + H2O  Number of mole of ammonia = 15.3 mole Volume of water…

Q: How many grams of HNO, are in 3.255 × 1022 molecules of HNO,? Show the conversions required to solve…

A:

Q: Potassium chlorate (KClO3) decomposes to KCl and O2. Determine the mass of O2 obtained from the…

A: Given, Mass of KClO3 = 12 g  Molar mass of KClO3 = 122.55 gmol-1 Therefore, no. Of moles = given…

Q: 4.2 A compound that can be sampled or "smelled by sniffing your armpits or someone's unwashed feet,…

A: The percent of carbon, Hydrogen, Oxygen is 55.80 %, 7.03 %, 37.17 % respectively

Q: A compound has a molar mass of 28.06 g. What is its chemical formula if carbon and hydrogen are…

A: In this question, chemical formula of the compound is to be determined which consists of carbon and…

Q: A 125.6 mg sample of an organic compound containing only carbon, hydrogen, and nitrogen is combusted…

A:

Q: Gallium is a shiny liquid metal often used as a nontoxic alternative to mercury in thermometers.  It…

A: To balance any reaction  Count theatoms each side  Coefficients need to be added to balance…

Q: 3 Cu + 8HNO3 -->3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many moles of water can be made…

A:

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many grams of water can be made…

A:

Q: 2 NH3 + 3 CuO --> 3 Cu + N₂ + 3H₂O In the above equation how many moles of N₂ can be made when 190.1…

A:

Q: 2 NH3 + 3 CuO g 3 Cu + N₂ + 3 H₂O In the above equation how many grams of N₂ can be made when 150…

A: The given balanced chemical equation is: 2NH3 + 3CuO → 3Cu + N2 + 3H2O The required mole ratio is: 1…

Q: A sample of a compound of Cl and O reacts with an excess of H2 to give 0.233 g HCl and 0.403 g of…

A:

Q: For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H₂O, how many grams of magnesium nitrate are produced…

A: 5.9 g of Magnesium nitrate, Mg(NO3)2  are produced from 5 g of Nitric Acid HNO3

Q: When gaseous nitrogen and gaseous hydrogen are reacted at high temperatures in the presence of a…

A: Given Reaction (at high Temperature and in presence of Catalyst) is,  N2(g) + 3H2(g) -------> 2…

Q: S + 6 HNO3 --> H₂SO4 + 6 NO2 + 2H₂O In the above equation how many moles of water can be made when…

A: We have to calculate moles of water in the reaction that can be made from given amount of HNO3

Q: 2 NH3 + 3 CuO → 3 Cu + N₂ + 3 H₂O In the above equation, how many grams of N₂ can be made when 6.1…

A:

Q: 18. Consider the following reaction: I2O5(9) + 5 CO(9) → 5 CO2(9) + I2(9) a. If 80.0 grams of iodine…

A: I2O5 (g)  + 5 CO (g) →5 CO2 (g)  + I2(g) Number of moles of a substance…

Q: 2. Alex has a big black tattoo of a teddy bear on their back. Iron (II, III) oxide was used as the…

A: Given:  The chemical formula is :  Fe3O4 sol a)   molar mass  =  3 Fe + 4 O =  (3 x 55.84)  +  (4 x…

Q: The reaction of calcium hydride with water can be used to prepare hydrogen gas: Hint CaH2(s) +…

A:

Q: Nitroglycerin (C3H5N3O9) is a powerful explosive. Its decomposition may be represented by 4C3H5N3O9…

A: 4C3H5N3O9 ⟶ 6N2 + 12CO2 + 10H2O + O2 Mass of C3H5N3O9= 2.0x 102 g Molar mass of C3H5N3O9= 227 g/mol…

Q: Toluene has a density of  867 kg/m³ and its molar mass is 92.14 g/mol. If 100 mL of Toluene is…

A:

Q: A sample of unknown hydrate, AC·XH2O, has a mass of 1.000 g before heating and a mass of 0.781 g…

A:

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: 5. For many years the recovery of gold, that is, the separation of gold from other materials,…

A: Given, 4Au+8KCN+O2+H2O→4KAu(CN)2+4KOH Gold extracted = 29.0 g moles of gold : =mass of goldmolar…

Q: traight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given general formula is, CnH2n+1COOH And n=1  So, Molecular formula becomes CH3COOH We know ,…

Q: The balanced equation for the combustion of butane, CaH1o, is shown below. For your convenience, the…

A:

Q: Part A. What is the mass of 9.50 moles of magnesium chloride, MgCl2? Express your answer with…

A: Part A: Calculation of mass of MgCl2 : The number of moles of MgCl2 = 9.50 moles The mass of a…

Q: 2 NH3 + 3 CuO → 3 Cu + N₂ + 3 H₂O In the above equation, how many grams of N₂ can be made when 18.4…

A:

Q: A molecular formula expresses the number of each kind of atom in a molecule. For example, the…

A: Given: Mass of compound = 6.50 g Mass of CO2 = 9.53 g. Mass of H2O = 3.90 g. Molar mass of CO2 = 44…

Q: 4. Salicylic acid is an organic compound composed of 61 % C, 7% H, and the rest is oxygen. If 0.218…

A: Given, In salicylic acid; Percent composition of C=61% Percent composition of H=7% Percent…

Q: 2 NH3 + 3 CuO → 3 Cu + N₂ + 3 H₂O In the above equation, how many grams of N₂ can be made when 10.9…

A:

Q: How many moles of Mg(OH)2 are present after the reaction is complete? Express your answer in moles…

A: Given 7.55 g of Mg(OH)2 reacted with 25mL of 0.195M HNO3  We have to tell the number of moles of…

Q: 1) Glucose has the formula C6H12O6. What is the percent composition of oxygen in glucose to three…

A: 1. Given data:  Glucose  molecular formula = C6H12O6 % composition of oxygen = ? Molar mass of…

Q: How many moles are in 8.9 x 10^26 molecules of C6H12O6? Express in decimal

A: 1 mole  of any atom / molecule consists avogadro number. Avogadra number NA = 6.022× 10 23

Q: 25.If 0.274 moles of a substance weighs 62.5 g, what is the molar mass of the substance, in units of…

A: Given data Moles of substance = 0.274 mol weight of substance = 62.5 g find out the molar mass of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.