The percent composition of hydrogen in a compound is 3.80%. How many grams of hydrogen are in 124 g of the compound?

Q: How many grams are in 1.11 molecules of N2?

A: Given:-Number of molecules of N2 = 1.11 molecules  To calculate :- mass (in g)

Q: Determine the number of oxygen atoms present in25.0 g of carbon dioxide.

A: From given data  Mass of carbon dioxide (CO2) = 25 g  Also,  Molar mass of carbon dioxide = 44…

Q: How many grams of S are in 15.0 g of (C3H5)2S

A:

Q: How many atoms are present in 327 g of magnesium cyanide?

A: A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms,molecules ,ions or others.…

Q: How many atoms are present in 58.93 g of cobalt? atoms

A: 1.  No.of moles = given mass / molecular mass  Molecular mass of Co = 58.93 g/mol   2. 1 mol = 6.022…

Q: Calculate the number of grams of cobalt that contain the same number of atoms as 1.96 g of iron.

A: 1 mole = 6.022×1023 [ Avogadro number ] The mass of one mole of atoms of an element is called molar…

Q: How many atoms of iron would you have in 55.845 g of iron?

A:

Q: How many grams of O are in 825 g of Na, O?

A: Given: Mass of Na2O =825 g  The molar mass of Na2O =61.97894 g/mol Moles=(825 g )/(61.97894…

Q: 1.51x1022 atoms of iron, Fe.

A: 1 mol contains atoms or molecules equal to the Avagadro's number.  Avagadro's number = 6.022 × 1023…

Q: calculate the mass in grams of 1.9x1024 atoms of lead

A: Mole Moles is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: How many molecules are in 3.6 grams of NaCI?

A: Number of moles of a substance can be calculated as the ratio of given mass of substance to the…

Q: How many total atoms are in 78.6 g of iron (II) chlorate?

A:

Q: What is the mass of calcium in grams in 9.07 g of calcium hypochlorite?

A: 9.07 g of Calcium hypochlorite is taken.

Q: A grain of maize pollen has an average mass of 250 ng. How much would a mole of these pollen grains…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many molecules of sulfur trioxide are in 78.0 grams?

A: Given , mass of SO3 = 78.0 g Molar mass of SO3 = 80.06 g/mol

Q: how many molecules are in 97.21 grams of sodium chloride NaCl?

A: I mol contains 6.023 × 1023 molecules. Number of moles = given mass/ molecular mass

Q: A compound is found to consist of 1.37g of iron and 2.62g of chlorine. What is the percent by mass…

A: Given that: mass of iron = 1.37 g mass of chlorine =  2.62 g  To find: the percent by mass of…

Q: How many fluorine atoms are present in 5.85 g of CF4?

A: Given, Mass of C2F4 = 5.85g

Q: A substance has a molecular mass of 143151 u. Find the mass of one molecule of this substance.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What mass of CaCl2 will contain 49.5 g of chlorine?

A: One mole of the given compound CaCl2contains two moles of chlorine. In terms of mass, 110.98 g of…

Q: How many molecules are in 502.1 g of NaCl?

A:

Q: 1. How many molecules of oxygen are in 50.0 g of oxygen?

A:

Q: How many moles are there in a copper wire that has a mass 10.234 g?

A: Since you have posted multiple questions, we are entitled to answer the first only. And since you…

Q: How many grams of Cl are in 105 g CaCl2?

A:

Q: How many moles are in 7.63 grams of NH3?

A: Given: Mass of NH3=7.63 g The molar mass of NH3=17.031 g/mol The number of moles=?

Q: How many atoms are present in 0.430 g of gold?

A: Given, mass of Gold = 0.430 g  Molar mass of Gold = 196.97 g/mol Number of Atoms = ?

Q: How many chlorine molecules are contained in a 151.34 g sample of chlorine?

A: To know the number of molecules, first we have to know the number of moles. Moles = Given mass /…

Q: The percent by mass of chlorine in C2 H5 Cl is %.

A: Percent by mass of Cl =( molecular weight of Cl/molecular weight of C2H5Cl) × 100%  Number of Cl…

Q: How many grams of S are in 515 g of SO2?

A: The atomic mass which is denoted in grams indicates the gram atomic mass. The relationship between…

Q: How many atoms are in 159 g159 g of calcium?

A:

Q: A 24.81-g sample of a gaseous compound containing only carbon, oxygen, and chlorine is determined to…

A: Given data, The overall mass of the gaseous compound = 24.81 g Mass of carbon = 3.01 g Mass of…

Q: What mass of cobalt contains the same number of atoms as 57.0 g of fluorine?

A: The mass of cobalt contains the same number of atoms as 57.0 g of fluorine has to be given,

Q: How many grams are in 5.11 × 10¹⁵ molecules of CO?

A: Given :- number of molecules of CO = 5.11 × 1015  To calculate :- mass of CO (in g)

Q: How many grams are in 2.57 × 10¹⁵ molecules of CO?

A: The molecules are converted into moles.

Q: calculate the mass in grams of 1.9x1023    atoms of lead

A: Given : Number of lead atoms = 1.9 X 1023 atoms

Q: Calculate the mass in grams of 422 atoms of potassium K

A:

Q: How many atoms are in a 3.56 g sample of Cu?

A: In order to determine atoms we have moles.

Q: A 1.30 g sample of titanium chemically combines with chlorine gas to form 5.16 g of titanium…

A:

Q: How many formula units make up 32.4 g of magnesium chloride (MgCl2)?

A: Calculate the number of moles of magnesium chloride. Number of moles = Given massMolar massNumber of…

Q: How many grams of chloride are there in 256 g of magnesium chloride?

A:

Q: How many molecules of carbon monoxide,CO, Comprise 4.82 grams?

A: First convert the given grams of CO to moles. Moles=MassMolar mass=4.82g28.01 g/mol=0.172 mol

Q: Triclosan, C12H7C1302(s), is an agent used to give some soaps their antibacterial properties.…

A: Given the chemical formula of the molecule = C12H7Cl3O2  The subscripts in the above chemical…

Q: How many moles of N are in 0.237 g of N,O?

A:

Q: How many grams of carbon are in 368.3 g of carbon tetrachloride? mass:

A: Mass of carbon tetrachloride = 368.3 g  Mass of carbon = ?

Q: How many water molecules are in 23.7 g of water

A: Given,  mass of water = 23.7 grams Here, number of moles = mass of water / molar mass { molar mass…

Q: How many molecules of carbon dioxide, CO2, comprise 2.55 grams?

A: 44 g of CO2  comprises  1 mole1 mole of CO2(44 g) contains  6.022 X 10 23 molecules 2.55 g of CO2…

Q: Aspirin is a compound with the molecular formula C9H8O4. What is its percent composition?

A: The percentage composition of C in aspirin can be calculated as: Percent composition of C = Number…

Q: How many atoms of iodine are in 126 g iodine?

A:

Q: How many grams of Cl are in 435 g CaCl2?

A: Given, Mass of calcium chloride = 435g

Q: How many atoms are present in 52.0 grams of iron?

A:

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.