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At STP 0.250L of an unknown gas has a mass of 1.00 gram. Calculate its molar mass.?
1 standard volume of 1 mole of any gas @ STP is 22.4 LSo the # of moles in a 1 L sample will be:1 L*(1 mol/22.4 L) = 0.04464 molSince you already know the mass of the gas @ STP, the molar mass will be mass/#moles1.92 g/ 0.04464 mol = 43.01 g/mol
What is RMM?
RMM is Relative Molecular Mass. e.g. water: 1 mole of water = 18g It is the mass of all the atoms in the molecule added up. The mass of hydrogen is 1 and oxygen is 16 Water is H20 so there are 2 hydrogens and 1 oxygen, this gves a mass of 18. The mass can be found on the periodic table.
How many moles in 64 grams of CH4?
There are 0.75 moles in it.You have to devide 12 by molecular mass
What is the mass of 0.500 mol of NH3?
NH3, or ammonia, has a molar mass of 17.031 g/mol. So .500 moles of the substance would equal 8.5155 grams.
Convert g per mole to grams?
first you must have a mass in mind. eg 345 grams of Carbon divided the mass by the molar weight of the particular substance. In the case of Carbon 12 grams/mole 345 grams/12 grams/mole = 28.75 moles
What is the mass of CuSO4?
The molar mass of CuSO4 is 159.61 g/mol. To find the mass of a specific amount of CuSO4, you would need to know the number of moles or the mass in grams.
When you have 3.86 g of CuSO4 - 5H2O how many total moles of ions are released when each of the following samples dissolves completely in water?
CuSO4.5H2Omass 3.86 gmolar mass: 249.70 g/mol3.86 g / 249.70 g/mol = 1.546*10-2 mol CuSO4.Each mole CuSO4.5H2O will dissociate in 1 mole Cu2+ and 1 mole SO42-, giving total of 2 moles ions.So 1.546*10-2 mol CuSO4 * 2 = 3.09*10-2 mole ions
What is the ratio of moles of CuSO4 to moles of water?
The ratio of moles of CuSO4 to moles of water in CuSO4•5H2O is 1:5. This is because there is one mole of CuSO4 for every five moles of water in the compound.
Is the percent by mass of copper in CuSO4 5H2O the same as in CuSO4?
No, the percent by mass of copper in CuSO4 5H2O will be different than in CuSO4 because CuSO4 5H2O includes water molecules in addition to the copper sulfate compound itself. Therefore, the total mass of CuSO4 5H2O will be greater, resulting in a lower percent by mass of copper in CuSO4 5H2O compared to CuSO4.
What is the mass of 1 mole of gas?
39.95 because that is the molar mass of Argon
What is the mass of 1 mole of argon?
The molar mass of Argon is 39.95g. Therefore 1 mole of Argon is 39.95g
What is the mass of 1 mole of an ionic compound called?
The mass of 1 mole of an ionic compound is called the molar mass. It is typically expressed in grams per mole.
One mole of copper II sulfate CuSO4 contains how many Oxygen atoms?
One mole of copper(II) sulfate (CuSO4) contains 4 oxygen atoms.
What is the molar mass of a molecule that weighs 1 dalton per mole?
The molar mass of a molecule that weighs 1 dalton per mole is 1 gram per mole.
1 mole of sulfur has how much mass?
32g
What mass of anhydrous copper 2 sulfate can be obtained by heating 125g of cuper 2 sulfate pentahydrate?
To find the mass of anhydrous copper(II) sulfate obtained: Calculate the molar mass of each compound: CuSO4·5H2O (pentahydrate) and CuSO4 (anhydrous). Use the molar ratio between CuSO4 and CuSO4·5H2O to find the amount of anhydrous CuSO4. Convert the amount to mass using the molar mass of CuSO4. The mass of anhydrous CuSO4 will be less than the initial 125g due to the loss of water upon heating.
A 20.0 mL sample of CuSO4 was evaporated to dryness leaving 0.967g of residue What was the molarity of the original solution?
Molarity = moles of solute(CuSO4)/volume of solution(Liters) 0.967 grams CuSO4 (1 mole CuSO4/159.62 grams) = 0.00606 moles CuSO4 Molarity = 0.00606 moles/0.020 liters = 0.303 Molarity
