he percent by mass

Q: what is a definition of a mole

A: A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance.…

Q: A compound contains arsenic and oxygen as the only elements. A sample of the compound contains 75.4%…

A: Given : Sample  have 75.4% arsenic by weight. And the compound is made up of only arsenic and…

Q: Calculate the percent composition by mass of cach element in AIKOH),. Use at least three significant…

A: Following are the atomic masses of the atoms in Al(OH)3: atomic mass:Al = 27 g/molO = 16 g/molH = 1…

Q: How many particles are in 24.5g sample of aluminum hydroxide? Round to 2 decimal places.

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: s the molar mass of the compound?

A:

Q: Calculate the percentage composition for C2H60. (Enter your answer to four significant figures.)…

A:

Q: What does it mean when the percent yield is about the same amount as the theoretical yield?

A: Percentage yield :  Percentage yield is the ratio of actual yield to the theoretical yield  ie.…

Q: Calculate the percent composition by mass of each element in Al(OH),. Use at least three significant…

A: The compound given is Al(OH)3  Assuming 1 mole of Al(OH)3  Molar mass of Al(OH)3 = Atomic mass of Al…

Q: What is the percent by mass of hydrogen in sulfuric acid

A: Molar Mass of H = 1 g/mol Molar mass of H2SO4 = 98 g/mol

Q: Calculate molar mass of Al2(SO4)3:

A: Given :-  Chemical formula = Al2(SO4)3  TO calculate :-  Its molar mass

Q: what is the average mass of one atom of aluminum?

A: One mole of aluminium contains Avogadro’s number of atom. That is, 6.02*1023 atoms.

Q: What's the theoretical percent water in tin(IV) chloride hexahydrate ?

A: The percent water by mass can be calculated by multiplying the ratio of water mass to the total mass…

Q: loss of mass mass % of water theoretical mass % of water.

A: 1. Loss of mass Assume we have CaCO3 and iswe react it with HCl then reaction proceed as:- CaCO3 +…

Q: What is the percent by mass N in Magnesium Nitrate?

A: Atomic mass of N =  14 g mol-1 Molar mass of Magnesium Nitrate (Mg(NO3)2) = 148.3 g mol-1

Q: A helium balloon takes up 4.35 liters of space. Your friend is showing off his new chemistry skills…

A: Dimensional analysis relates between physical quantities with the help of dimensions and units of…

Q: The molar mass of a substance is 26.5G/mol. What is the amount of substance in a sample of 36g?

A:

Q: calculate the theoretical percent of potassium chloride in potassium chlorate.

A: Since mass is missing in the term mass percent of potassium chloride in potassium chlorate. Hence I…

Q: A compound has the chemical formula SrX2, where X is an unknown nonmetal. The percent by mass of Sr…

A:

Q: gaseous methane (ch4) will react with gaseous oxygen(O2) to produce gasesous carbon dixodie (co2)…

A: Mass of methane = 0.481 gm Moles of methane = mass / molar mass                              = 0.481…

Q: The number of moles of caffeine in 50.0 g of caffeine is?

A: The given Mass of caffeine = 50.0 g  Molecular formula of Caffeine is C8H10N4O2

Q: 1.00 g of benzoic acid corresponds to how many mmols of this compound?

A: Given that, 1.00 g of benzoic acid. We have to calculate the corresponds amount of benzoic acid in…

Q: The chemical formula for diethyl sulfoxide is: (CH,CH,), SO Calculate the molar mass of diethyl…

A:

Q: The molar mass is the mass of a mole of atoms. O True O False

A: Correct Ans is -  The molar mass is the mass of  a moles of atoms ---> This statement is true.…

Q: How many of molecules of water, H2O, are in a glass of 240g water?

A:

Q: What is the percent by mass of sulfur in PASR? Enter your answer as a number without units. Your…

A: Mass percentage =( mass of sulfur/mass of compoun )× 100 Mass of compound = 380.41 g/mol  Mass of…

Q: How many moles of water are in 432g of water?

A: Given: 432 g of water. Molar mass of water= 18 g/mol We have to calculate moles of water in 432 g of…

Q: The proportion of sodium hydroxide in a mixture can be determined by

A: Sodium hydroxide in a mixture can be determined by various ways. Formula of sodium hydroxide is…

Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO, and…

A: With datas given  With molar mass of NaNO3, Ca(NO3)2 ,NO3 known mass percentage of NaNO3 is done…

Q: How do you determine what n is? I know it is number of moles but how do you find that specifically?

A: Redox reactions are the ones in which both oxidation, as well as reduction, takes place at same…

Q: the amount of disolved oxygen in Sample of mol L what is this in units of milligrans niver water is…

A: To express the given concentration of dissolved oxygen in mg/L

Q: The ______________ is a collective unit that represents Avogadro’s number of particles.

A: we have to complete the given sentence using the appropriate term

Q: Calculate the molar mass of CaC2H3O2. (Include correct units and round to the nearest whole number)

A: Given  Formula = CaC2H3O2  Molar mass of CaC2H3O2  = ?

Q: Molar volume is the ratio of Da Actual volume to the number of moles Ob. Number of moles to the…

A: The definition of the molar volume is to be mentioned.

Q: The number of atoms in 25.7gAl?

A: The number of atoms in 25.7gAl are

Q: A 4.0 g sample of bromine is reacted with 0.50 grams of hydrogen to form hydrogen bromide. How many…

A:

Q: Part B Rank them according to the amount that would be formed. Rank from largest amount to least…

A: We have to rank the given alkenes.

Q: - What is the empiric

A: Assume total mass is 100 g So, mass of C = 48.64 g Mass of H = 8.16 g Mass of O = 100-(48.64+8.16)…

Q: What is the percent N by mass in iron (iii) nitrate

A: The detailed solution is given below.

Q: Which of the following is the correct unit for equivalent weight? a)eq/mol b)eq/g c)g/eq d)mol/eq

A: The unit for equivalent weight is given below.

Q: . Aluminum metal is produced by passing an electric current through a solution of aluminum oxide…

A:

Q: Calculate the percentage composition for PNCI2 - (Enter your answer to four significant figures.)…

A: Solution: The percentage composition for PNCl2 are as follows --- The molar mass of phosphorus (P) =…

Q: What is the percent by mass of chlorine in calcium chlorate?

A: The mass percent describes the mass content of particular atom in a complete molecule.

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".