In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (Atomic weight of calcium = 40) ?

Related Mcqs:

Fireclay refractories___________________?

A. Are not resistant to the action of basic slags B. Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc C. Shrink during firing D. All A., B. and C....

Measurement of the amount of dry gas collected over water from volume of moist gas is based on the___________________?

A. Charle’s law B. Dalton’s law of partial pressures C. Avogadro’s hypothesis D. Boyle’s law...

Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?

A. Are held together by stronger inter-molecular forces B. Move faster C. Have no definite shape D. Are heavier...

S.T.P. corresponds to _________________?

A. 1 atm. absolute pressure & 15.5°C B. 760 mm Hg gauge pressure & 15.5°C C. 760 torr & 0°C D. 101.325 kPa gauge pressure & 15.5°C...

A gas mixture contains 6 moles of H2 and 2 moles of N2. If the total pressure of the gaseous mixture is 4 kgf/cm2; then the partial pressure of N2 in the mixture will be _____________ kgf/cm2 ?

A. 1 B. 2 C. 4 D. 8...