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What is the percent of sulphur in ammonium sulphate?
The formula of ammonium sulphate is (NH4)2SO4, showing that each formula mass contains one sulphur atom. The formula mass of ammonium sulphate is 132.13, and the gram atomic mass of sulphur is 32.06. Therefore, the percent by mass of sulphur in ammonium sulphate is 100(32.06/132.13) or 24.26, to the justified number of significant digits.
What is the relative formula mass of ethanol?
The relative formula mass of ethanol (C2H5OH) is 46 g/mol.
What are the relative formula masses of hydrogen molecules?
The relative formula mass of a hydrogen molecule (H2) is calculated by adding the atomic masses of the two hydrogen atoms. Each hydrogen atom has an atomic mass of approximately 1, so the relative formula mass of a hydrogen molecule is 2.
What is the mass of one mole of iron sulphate?
In one mole of each element there is... Fe - 56g O - 16g S - 32g Th equation is Fe2(SO4)3 56g x 2 = 112g 32g x 3 = 96g 16g x 12 = 192g 112g + 96g + 192g = 400g 400g
A piece of iron weighing 85.65 g was burned in air The mass of the iron oxide produced was 118.37 g use the molar mass of iron to convert the mass of iron used to moles?
If 85.65g of iron forms 118.37g of the oxide, the mass of oxygen combined with this mass of iron is 32.72g. Calculate the number of moles of iron and oxygen which have combined (after all, the formula of a compound shows the ratio of the number of moles of each element combined). Do this by dividing the mass reacted by the Relative Atomic Mass of the element concerned. i.e. For Iron it is 85.65/55.8 and for Oxygen 32.72/16. This gives a mole ratio of Fe:O as 1.53:2.04 or 3:4 Therefore the formula is Fe3O4
What is the formula mass of ferric sulphate?
399.91 amu Fe(2*55.85)+S(3*32.07)+O(12*16.00)
What is the percent of sulphur in ammonium sulphate?
The formula of ammonium sulphate is (NH4)2SO4, showing that each formula mass contains one sulphur atom. The formula mass of ammonium sulphate is 132.13, and the gram atomic mass of sulphur is 32.06. Therefore, the percent by mass of sulphur in ammonium sulphate is 100(32.06/132.13) or 24.26, to the justified number of significant digits.
What is the relative formula mass of iodine?
The relative formula mass of iodine is 253.8 g/mol.
What is the relative formula mass of copper?
The relative atomic mass of copper is approximately 63.55. To calculate the relative formula mass of copper, you sum the atomic masses of its atoms, which in this case would just be the atomic mass of copper. Therefore, the relative formula mass of copper would be 63.55.
What is the relative formula mass of ethanol?
The relative formula mass of ethanol (C2H5OH) is 46 g/mol.
Why was it necessary to weigh the iron filings accurately though the mass of copper sulphate taken was only approximate?
it is because iron is solid and can easily sublimes in aqueous copper sulphate
Why is iron sulphate a compound?
Iron sulphate is a compound because it contains more than one element (three in this instance) in fixed ratios by mass to one another. There are at least two kinds of iron sulphate, those of iron(II) and iron(III). These have the same mass ratio between sulfur and oxygen, but the ratios of these two elements to iron are different in these two compounds.
What is the formula mass of ferric sulphate Fe2SO43?
The molar mass of Fe2(SO4)3 is 399,88 g (anhydrous).
What is the relative formula mass of nitrate?
The chemical formula is (NO3)-; the mass is 62 g.
What are the relative formula masses of hydrogen molecules?
The relative formula mass of a hydrogen molecule (H2) is calculated by adding the atomic masses of the two hydrogen atoms. Each hydrogen atom has an atomic mass of approximately 1, so the relative formula mass of a hydrogen molecule is 2.
What is the relative formula mass of lead oxide?
The relative formula mass of lead oxide (PbO) is calculated by adding the atomic masses of the elements in the formula. The atomic mass of lead (Pb) is 207.2 g/mol, and the atomic mass of oxygen (O) is 16.0 g/mol. Therefore, the relative formula mass of lead oxide is 207.2 + 16.0 = 223.2 g/mol.
What is the formula mass of hydrogen?
The relative formula mass of a molecule of hydrgoen is two (2 x 1).
