Question

write down the balance equation of
a. nitrogen+hydrogen = ammonia
b. calcium carbonate = calcium oxide + carbondioxide
c. calcium + sulphuric acid = calcium sulphate + hydrogen​

Answer 1

• N2 + 3H2 = 2NH3
• CaCO3 = CaO + CO2
• Ca + H2SO4 = CaSO4 + H2

Please replace the equal to sign (=) with an arrow while writing. I am sorry I didn't get that arrow sign.

Answer 2

$<b>Heya.! Here goes your answer...$

_______________________________________________________

♦ Nitrogen + Hydrogen --> Ammonia

↓→ $\sf{N_2\: +\: 3H_2 \:--> \: 2NH_3}$

♠ Here, we have 2 Nitrogen on the reactant side. So we add 2 on the product side. Then the number of hydrogen atoms on product side becomes 3×2 = 6. So we add 3 to Hydrogen on the reactant side.

_______________________________________________________

♦ Calcium Carbonate --> Calcium oxide + Carbon dioxide

↓→ $\sf{CaCO_3\: -->\: CaO \:+ \:CO_2}$

♠ No balancing required.

_______________________________________________________

♦ Calcium + Sulphuric acid --> Calcium Sulphate + Hydrogen

↓→ $\sf{Ca \: + \: H_2SO_4 \: -->\: CaSO_4 \: + \: H_2}$

♠ No balancing required.

_______________________________________________________

$Thank you ...!!</b>$