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
Related Questions
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
The oxidation number and covalency of sulphur in the sulphur molecule are respectively :
0 and 2
0 and 8
Which has more molecules: 1 mole of glucose or 18 grams of water?
1 mole of glucose
18 grams of water
Both have the same number of molecules.
Cannot be determined without more information.
Which of the following pair of gases contain the same number of molecules?
Number of atoms in 558.5 g of Fe is (at . wt = 55.85)
Twice that in 60 g carbon
Half in 8 gr of He
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
A sample of hydrated copper sulfate (CuSOβ β xHβO) contains 0.25 moles of water. If the total mass of the hydrated salt is 62.5 g, and the anhydrous copper sulfate (CuSOβ) has a molar mass of 160 g/mol, what is the value of 'x' (the number of water molecules per formula unit)?
1
2
3
4
The number of Na atoms in 46 g βNaβ
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}}
