Chemistry
From the equation
3Cu + 8HNO3 ⟶ 3Cu(NO3)2 + 4H2O + 2NO
(At. mass Cu=64, H=1, N=14, O=16)
Calculate:
(a) Mass of copper needed to react with 63 g of HNO3
(b) Volume of nitric oxide at S.T.P. that can be collected.
Related Questions
Nitrogen and hydrogen react to form ammonia.
N2 (g) + 3H2 (g) ⟶ 2NH3 (g)
If 1000 g of H2 react with 2000 g of N2:
(a) Will any of the two reactants remain unreacted? If yes, which one and what will be it's mass?
(b) Calculate the mass of ammonia (NH3) that will be formed?
From the equation for burning of hydrogen and oxygen
2H2 + O2 ⟶ 2H2O (Steam)
Write down the number of mole (or moles) of steam obtained from 0.5 moles of oxygen.
(a) Calculate the number of moles in 7 g of nitrogen.
(b) What is the volume at S.T.P. of 7.1 g of chlorine?
(c) What is the mass of 56 cm3 of carbon monoxide at S.T.P?
Some of the fertilizers are sodium nitrate NaNO3, ammonium sulphate (NH4)2SO4 and urea CO(NH2)2. Which of these contains the highest percentage of nitrogen?