Calculate the mass of an atom of Sulphur.

A metal oxide contains 34.78% of oxygen. The vapour density of metal chloride is 75.75. The atomic weight of metal is:

4.2 g of metal carbonate on heating gave 1.12 l of `CO_2` gas at STP. Calculate the equivalent weight of metal.

1g of ordinary sample of limestone dissolved in 16.6cc of 0.92N HCl leaving some sandy residue. The % of pure `CaCO_3` i…

The density of Chlorine gas at STP is:

A sample of oxygen consists of three isotopes O-16,O-17 and 0-18 in the relative abundance of 99.76% , 0.04% an 0,20% re…

Explain the Atomic Weight of an element.

When treated with dilute HCl, 0.3 g of magnesium liberate 290 ml of hydrogen at NTP. Calculate the equivalent weight of …