Why isn't the mass of potassium sulfate used In any of the calculations?

Q: A piece of iron weighting 85.65 g was burned in air. The mass of the iron oxide produced was  118.37…

A: GIVEN: Mass of iron = 85.65 g Mass of iron oxide produced= 118.37g To Calculate: The empirical…

Q: 6.15×1023 KK atoms Express your answer using three significant figures.    How many moles of atoms…

A: We know 1mole = 6.022x1023  So we can easily find the number of moles by using- Number of…

Q: Convert 0.19 moles of carbon dioxide to grams of CO2.

A: Answer: This is question based on mole concept where each mole of the substance has a fixed mass…

Q: What is the theoretical yield of MgO from the combustion of 5.25 x 10^23 atoms of Mg and 4.69 x…

A:

Q: How many grams of magnesium oxide can be produced by reacting 0.248 g magnesium that is 97.5% pure…

A: Given mass of Magnesium = 0.248g% purity of Magnesium = 97.5%No.of molecules of oxygen = 5.36 x…

Q: A student carefully measures 1.069 g of an unknown brown copper chloride and dissolves it into…

A: Let the empirical formula of the copper chloride be CuClx. Copper chloride reacts with Zinc to form…

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: A solution of ammonia and water contains 2.00×1025 water molecules and 7.60×1024 ammonia molecules.…

A: First we need to calculate the hydrogen atoms from both water and ammonia molecules. Then total…

Q: A 5.87-gram sample of powdered nickel is first placed into a crucible; the nickel and crucible are…

A: We have to Formula for compound .

Q: We allow 48.0 g methane, CH4, to undergo complete combustion with excess oxygen, O2. What mass of…

A: Given- Mass of methane = 48.0 g To find- mass of oxygen that reacts  the mass of CO2 produced In…

Q: Aqueous sulfuric acid (H₂SO4) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: First calculate the number of moles for H2SO4 and NaOH. Use that moles to calculate the mass of…

Q: What is the mass percentage of O in CO2? Provide an answer to two decimal places.

A: Given,  The mass percentage of O in CO2 is:

Q: (a) Determine the number of oxygen atoms and hydrogen atoms in1.00 kg of water. (b) Calculate the…

A: (a) Determination of number of oxygen atoms and hydrogen atoms in 1.00 kg of water is as follows;…

Q: A solution of ammonia and water contains 4.70×1025 water molecules and 5.60×1024 ammonia molecules.…

A:

Q: chemist prepares a solution of magnesium bromide (MgBr,) by measuring out 1.8 g of me mark with…

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Q: The empirical formula of a compound is X5Y7Q by mass and the molecular formula weighs 162.1 g/mol.

A: Let us the consider the actual molecular formula as (X5Y7Q)n. Then,n x ( 12.01*5 + 16*7 + 14.01) =…

Q: What amount in moles is 4.77x10^25 (to the power of 25) molecules?? 1.2.87x10^49 mol 2.79.2 mol…

A: Molecules = 4.77 x 1025

Q: When a sample of solid potassium chlorate is heated strongly, a decomposition reaction occurs. Solid…

A: Mole is calculated by dividing the given mass with molecular mass. When a sample of solid potassium…

Q: Ammonia is produced from the reaction of nitrogen and hydrogen according to the following balanced…

A: Given information,        1.40 × 103 g N24.60 × 102 g H2

Q: What's the percentage by mass of Cl in MgCl2 if it  is 24.6% Mg by mass?

A: Intrdouction : %age by mass of Mg = 24.6%

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: A binary compound of the elements X and Y is 1/3X by mass.  The molar mass of element X is ¾ the…

A: Empirical Formula  It is the simplest possible ratio of atoms present in a compound. To get the…

Q: Al2O3 in g produced

A: Balance reaction:             4 Al + 3 O2 ------->  2Al2O3           molar mass of Al = 27g/mol…

Q: A 0.250 g sample of hydrocarbon undergoes complete combustion to produce 0.845 g of CO2 and 0.173 g…

A:

Q: What mass of water is produced from the complete combustion of 3.20×10−3 gg of methane? Express your…

A: We have to calculate the amount of water is produced from the complete combustion of 3.20×10−3 g of…

Q: If 2.332 g of a sample containing a mixture of CuO and CuCO3 are heated, the final weight of the…

A: CuCO3 on heating decomposes to form CuO and CO2 CuCO3 (s) →heat CuO (s) + CO2 (g) 123.55 g…

Q: Nitric acid is used in the production of fertilizer as well as nitroglycerin.  Convert 2.9 x 1021…

A: Since, we know that ; 1 mol of nitric acid contains 6.022 × 1023 molecules. So,  2.9 × 1021…

Q: A sample containing only carbon,hydrogen,phosphorus and oxygen is subjected to elemental analysis.…

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Q: How many moles are represented by 3.65x10^34 molecules of water?

A: Given: molecules of water = 3.65×1034

Q: A 4.90g sample of barium bromide is reacted with 11.7g of silver (i) nitrate to form silver (i)…

A: The balanced chemical equation for the given reaction is shown below.

Q: A compound was found by elemental analysis to contain 39.96 % carbon, 13.42 % hydrogen, and 46.62 %…

A: Molecular formula is the formula of the molecule in which all the atoms are represented with number…

Q: Sodium reacts with chlorine to form sodium chloride. In an experiment a student reacted 1.50 g of…

A: A balanced chemical reaction is a reaction that contains the same number of atoms on the reactant…

Q: In measuring the sample that is placed into a SCUBA diver's tank it has the following gases: 52.00 g…

A: A numerical problem based on percentage concentration, which is to be accomplished.

Q: Calculate the mass percentage of each element in vanadium (III) acetate.

A: Given :- name of compound = vanadium (III) acetate  To calculate :- mass percentage of each element

Q: 6. Consider the following E1 reaction. OH H3O+ reflux H₂O a. Draw the complete, detailed mechanism…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: How many moles of hydrogen carbonate need to decompose to produce 8.70 x 1023 molecules of carbon…

A: Hydrogen carbonate = HCO3- Decomposition reaction of hydrogen carbonate occurs with H+ - HCO3- + H+…

Q: Iron reacts with oxygen gas to form a mixture of FeO and Fe₂O₃ when the supply of oxygen is limited.…

A:

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: Given information,      0.809 g of hydrobromic acid is mixed with 0.55 g of sodium hydroxide

Q: [Tutorial: Empirical formula) This question will walk you through the process of calculating the…

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Q: What is the percent by mass of KClO3 in the original mixture

A:

Q: How

A: moles of water = ( molecules of water ) / ( Avogadro number )  Where :  Molecules of water is 2.0 •…

Q: Molarity is used to measure concentration in chemistry. What are the two units used that make up…

A: -> Molarity is number of moles present in one Litere of solution.                          (or)…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".