a) What is the mass of the original sample? b) What is the mass of NaCI in the sample? c) What is the mass percent of NaCl in this mixture?

Q: A compound containing carbon, hydrogen, and oxygen contains 60.00% carbon by mass and 8.05% hydrogen…

A: Since you have posted  a question with Multiple subparts. We will solve the first three subparts for…

Q: 5. Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of…

A: Given, The mass of a compound is 20.0 grams The mass of the calcium in the compound is 4.00 grams

Q: PLEASE INCLUDE EXPLAINATION, THANK YOUUUU: 4) Determine how many atoms are in 5.75 moles of a…

A: As we know,  1 mole of any substance contains Avogadro's No. of atoms of that substance. where…

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: 1-Calculate the mass of compound required to prepare 100.00 mL of a 1.40x102 M CuCl2 ?.

A: Molarity is number of moles of solute present per liter of solution, notated as M and the unit is…

Q: a) Determine molecules of C5H5N in 16.00 g of C5H5N (molar mass = 79.11g/mol). b) Explain how the…

A: a) Given : Mass of C5H5N = 16.00 g And molar mass of C5H5N = 79.11 g/mol.

Q: 60. Lithium and bromine combine to form lithium bromide, as shown here. If 30 moles of Li react with…

A: 2Li(s) + Br2(l) ----> 2LiBr(s) ............(equation-1) Moles of Li = 30 mole

Q: atter.) 115 g of methane is reacted with an equal mass of sulfur.

A: In balanced chemical reaction number of atoms of each element in product side is equal to number of…

Q: In a combustion,27.90 g CH4 combine with 110.5 g O2 to make 76.50g CO2 and 62.65g H2O. Does this…

A: As mass in reactant and product side is not equal so it does not follow law of conservation of mass.

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: a. What isthe percent by mass of water in iron (II) sulfate heptahydrate, FeSO4 • 7H2O  (or what…

A:

Q: A student reported the following composition of an unknown mixture: 25% NH4Cl, 30% NaCl, and 50%…

A: The objective of this question is to show the unknown mixture reported by the student exceed ,…

Q: Br A) What is the molecular formula for this compound? B) What is the empirical formula for this…

A: A Molecular formula  represent the total number of atoms of each element in each molecule of a…

Q: A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ]…

A:

Q: What is a MOLE? O Aunit of substance containing a certain amount expressed in grams O Aunit of…

A: The given question asks to select the right option that accurately defines a mole of any substance.

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: 4. Determine the percent composition by mass of all elements in H,SIO3.

A:

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: Part D. A 28.50 g sample of a compound of carbon, sulfur, hydrogen, and combusted (burned). 35.25 g…

A:

Q: A mixture of CaCO₃ and CaO weighing 0.693 g was heated to produce gaseous CO₂. After heating, the…

A: Molecular mass The molecular mass is the mass of a given molecule. It is measured in Daltons. The…

Q: A researcher analyzed an unknown solid, extracted from the bark of spruce trees, to determine its…

A: a.  Mass of sample = 11.32 mg  = 0.01132 g       Mass of CO2       = 24.87 mg   = 0.02487 g…

Q: A sample of naphthalene was analyzed in the laboratory and it was determined that the sample…

A: Number of moles (mol) = Given mass (g)Molar mass (g/mol)Given that:Number of moles= 0.457 molesMolar…

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

A:

Q: Without using a calculator, which has the greater mass: One mole of carbon atoms or one mole of…

A:

Q: What percentage of NH4NO3 is nitrogen?

A: Mass percent of element  is the mass of element present in 100g of the compound. Mass percent of…

Q: 1. In a certain compound of copper and oxygen, CuxOy, we find that a sample weighing 0.6349 g…

A: Molar mass of copper = 63.646 g/molMolar mass of oxygen = 16 g/molTotal mass of sample = 0.6349…

Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

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)…

Q: Calculate the mass (in g) of sample. 1 glucose molecule (C6H12O6)

A:

Q: If 6 moles of Si and 6 moles of N2 are combined in a reaction flask, what remains in the reaction…

A:

Q: 1-Calculate the mass of compound required to prepare 100.00 mL of a 1.40x102 M CuCl2 ?.

A: Molecular weight of CuCl2 = 134.45 g mol-1 Formula Used 1. No of moles = volume × concentration 2.…

Q: A flask contains 0.200 mol of liquid bromine. Br2. Determine the number of bromine molecules present…

A:

Q: When 2.375 grams of a hydrocarbon CxHy, we're burned in a combustion analysis apparatus, 7.451 grams…

A:

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".