Give the number of molecules is 2 g hydrogen.

Give the number of molecules present in 1.8 g water.

Calculate the number of molecules in 0.52g of acetylene.

What is the number of molecules in 11.2 litre of O_(2) at STP?

What is the number of molecules in each of 32g O_(2) and 44g CO_(2) ?

Find the number of molecules in 1 millimole of CO_(2) .

xL of nitrogen at STP contains 3xx10^(22) molecules. The number of molecules in (x)/(2)L of ozone at STP will be-

How many molecules are there in a 3.46 g sample of hydrogen chloride, HCl? Note: The number of molecules in a sample is related to moles of compound (1 mol HCl = 6.023 xx 10^(23) HCl molecules). Therefore if you first convert grams HCl to moles, then you can convert moles to number of molecules).

In a flask, the weight ratio of CH_(4)(g) and SO_(2)(g) at 298K and 1 bar is 1:2. the ratio of the number of molecules of SO_(2)(g) and CH_(4)(g) is-

Calculate the number of molecules left when 10^(21) molecules of CO_(2) are removed from 200 mg of CO_(2) .

The number of water molecules is maximum in-