Which of the following contains the greatest number of atoms?
1 g of Li
1 g of Ag
1 g of Mg
1 g of O2
Related Questions
How many molecules are present in 9 g of water?
Arrange the following in increasing order of the number of atoms present:
(i) 2 g of He
(ii) 4 g of
(iii) 8 g of
(i) < (ii) < (iii)
(i) < (iii) < (ii)
(ii) < (i) < (iii)
(iii) < (ii) < (i)
A gaseous mixture contains oxygen and nitrogen in the ratio of by weight. Therefore, the ratio of their number of molecules is:
1 mol of contains
atoms of H
4 g.atom of Hydrogen
molecules of
3.0 g of carbon
Maximum no. of atoms are present in
Two elements P and Q react to form compounds with formulas and . If 0.1 mole of weighs 5 g and 0.2 mole of weighs 14 g, what are the atomic masses of P and Q?
P = 20, Q = 15
P = 40, Q = 5
P = 30, Q = 10
P = 10, Q = 20
A mixture of and gases contains 0.44 g of and 0.56 g of . The total number of moles of gases in the mixture is:
0.01 moles
0.02 moles
0.03 moles
0.04 moles
According to the Haber-Bosch process, the molar ratio of hydrogen to ammonia is:
1:1
2:1
3:2
1:2
A student heats 40.0 g of a mixture containing magnesium carbonate and some inert impurities. Upon complete decomposition, 8.0 g of magnesium oxide is formed. Calculate the percentage by mass of magnesium carbonate in the original mixture. (Atomic weight: )
20
42
60
80
If you have 18g of water and 18g of oxygen, which contains a greater number of molecules?
18g of water
18g of oxygen
They contain the same number of molecules
Cannot be determined
