If the weight of 10 sheets of thick paper is 40 grams,How many sheets of the same paper would weight 800 grams?

How many grams does an atom of hydrogen weigh ?

A satellite is going in a circular orbit of radius 4 xx 10^5 km around the earth has a certain speed. (b) What will be the ratio of the weight of a body on the surface of Mars to tyhe weight of the same body on the surface of the earth? The masses of earth and Mars are in the ratio 10:1 and their radii are in the ratio 2:1

If 10 volumes of dihydrogen gas react with 5 volumes of dioxygen gas, how many volumes of water vapour would be produced?

If 10 volumes of hydrogen gas react with 5 volumes of dioxygen gas, how many volumes of water vapour would be produced?

1 litre of a gas at STP weights 1.35 gram. The molar mass of the gas is

How many molecules are present in one gram of hydrogen gas?

The length of a copper wire increases by 0.01 metre, when it is loaded with 10 kg weight. Another copper wire of the same length but double the radius is loaded with the same weight. The increase in length of the second wire, in metre, will be