Set 2 – Moles of Elements

4

Moles Set 2 - Moles of Elements

1 / 26

0.100mol of X atoms has a mass of 15.2g. The element is a mixture of two isotopes in equal amounts. One of these is 151X. What is the mass number of the other isotope?

2 / 26

1.00mol of Y2 molecules weighs 14 times as much as 1 mole of hydrogen molecules. What is the relative atomic mass of Y?

3 / 26

Calculate the volume in cm3 of 0.100 mole of osmium atoms (density of Os = 22.5gcm-3) Osmium is the most dense of all the elements

4 / 26

Calculate the volume in cm3 of 0.500 mole of lithium atoms (density of Li = 0.534gcm-3) Lithium is the least dense of all the metallic elements (hint: look at the units!)

5 / 26

Calculate the number of moles of aluminium atoms in a 10.0cm3 block of aluminium (density of Al = 2.70gcm-3

6 / 26

Calculate the number of moles of fluorine molecules (F2) in 9.00g of fluorine

7 / 26

Calculate the number of moles of bromine molecules (Br2) in 4.00g of bromine

8 / 26

Calculate the number of moles of nitrogen molecules (N2) in 28.0g of nitrogen

9 / 26

Calculate the number of moles of nitrogen atoms in 28.0g of nitrogen

10 / 26

Calculate the number of moles of phosphorus atoms in 3.10g of phosphorus

11 / 26

Calculate the number of moles of chlorine atoms in 142g of chlorine

12 / 26

Calculate the number of moles of iron atoms in 55.8g of iron

13 / 26

Calculate the mass of oxygen having the same number of molecules as 7.10g of chlorine

14 / 26

Calculate the mass of silver containing the same number of atoms as 1.20g of magnesium

15 / 26

Calculate the mass of silicon that contains the same number of atoms as 10.0g of calcium

16 / 26

Calculate the mass of 6.02 x1022molecules of iodine (I2)

17 / 26

Calculate the mass of 2.01 x1023atoms of carbon

18 / 26

Calculate the mass of 6.02 x1023atoms of oxygen

19 / 26

Calculate the mass of 3.00 mol of phosphorus (P4) molecules

20 / 26

Calculate the mass of 1.00 mol of bromine (Br2) molecules

21 / 26

Calculate the mass of 0.00200 mol of sodium atoms

22 / 26

Calculate the mass of 0.750 mol of titanium atoms

23 / 26

Calculate the mass of 0.100 mol of lead atoms

24 / 26

Calculate the mass of 0.500 mol of sulfur atoms

25 / 26

Calculate the mass of 2.00 mol of argon atoms

26 / 26

Calculate the mass of 1.00 mole of zinc atoms

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