Which of the following has the maximum number of atoms?
1 g of H₂O
1 g of O₂
1 g of CH₄
1 g of Li
Related Questions
How many moles of water are present in 22.4 L of water vapor at Standard Temperature and Pressure (STP)?
1
0.5
2
4
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
25.0 g of a calcium carbonate sample decomposes on heating to give carbon dioxide and 10.0 g calcium oxide. What will be the percentage purity of calcium carbonate in the sample? (Atomic weight: )
71.44
80
62.5
90.5
The number of Na atoms in 46 g ‘Na”
6.023{\mkern 1mu} {\mkern 1mu} imes {\mkern 1mu} {\mkern 1mu} {10^{23}}
2
1
12.046{\mkern 1mu} {\mkern 1mu} imes {\mkern 1mu} {\mkern 1mu} {10^{23}}
Elements X and Y form compounds and . If 20 g of contains 0.2 moles and 18 g of contains 0.1 moles. What are the atomic weights of elements X and Y?
X = 20, Y = 40
X = 30, Y = 35
X = 40, Y = 30
X = 50, Y = 25
In which case the number of molecules of water maximum
18 ml of water
0.18 g of water
0.00224 L of water vapour at 1 atm and 273 K
mol of water
A 20 L vessel contains 0.1 mole of at 300 K. is prepared in the vessel by subjecting to silent electric discharge till the volume is reduced to 15 L at 300K. What is the number of moles of formed?
0.05
0.025
0.075
0.01
Which of the following contains the greatest number of helium atoms?
4 g of He
20 g of Ne
4 g of
28 g of
The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is:
10
20
30
40
0.5 moles of water contains how many molecules?
6.022 x 10²³ molecules
1.204 x 10²⁴ molecules
3.011 x 10²³ molecules
1.505 x 10²³ molecules
