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: A solution of CaCl2 in water forms a mixture that is 38.0% calcium chloride by mass, if the total…

A: Given data: The mass percent of CaCl2 in water is 38.0%. The total mass of the mixture is 202.8 g.…

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: 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 mass of ethanol is in a 259 g of 24.1 % ethanol in water.

A: The objective of the question is to find out the mass of ethanol in a 259 g solution of 24.1%…

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: Determine the formula weight of NH₄I. Provide an answer to two decimal places.

A: Since, Formula weight of the compound is the sum of atomic weight of each atom present in the…

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: Determine the mass of CaSO4 in the sample based on the following data to two decimal places mass of…

A: When the sample is heated the water present in the sample is evaporated and anhydrous CaSO4 is…

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: 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: 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: Percent yield is ( divided by ) times .

A: Percent yield defines the original mass produced.

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: 4. Subtract 3.58 x 10-2 kg from 1.41 x 101 ng and report your answer in g.

A: We know that kilogram, nanogram and gram are the units of mass.

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: How many miles of HCI are in a sample of HCI with mass of 126g?

A:

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: Determine the formula weight of NH,CI. Provide an answer to two decimal places.

A:

Q: Determine the formula weight of BaSO₄. Provide an answer to two decimal places.

A:

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: 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: 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: What is the value of one mole?

A: Mole is the SI unit to measure the number of atoms, molecules and ions of a particular entity.

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".