Mole Concept — Set 3
Chemistry · मोल संकल्पना · Questions 21–30 of 40
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1
The charge carried by 1 mole of electrons is approximately?
2
Gram molecular mass of a substance means?
3
At STP, the volume occupied by 0.50 mol of an ideal gas is?
4
Why does molarity generally change with temperature?
5
Why is molality generally considered temperature independent?
6
For any mixture, the sum of mole fractions of all components is?
7
How much NaOH is needed to prepare 500 mL of 0.20 M NaOH solution? (NaOH = 40 g/mol)?
8
How many formula units are present in 2.5 g of CaCO3? (CaCO3 = 100 g/mol)?
9
A compound contains 40.0% C, 6.67% H, and 53.33% O by mass. Its empirical formula is?
10
If the empirical formula is CH2O and the molar mass is 180 g/mol, the molecular formula is?