Answer:
They are covalent bond.
Explanation:
For example; Water which is formed by the combination of 2 hydrogen and 1 oxygen and both are non-metal element.
According to law of conservation of mass.
In a chemical reaction Mass is neither created nor destroyed.
- Mass of product =Mass of reactant
#1
Mass of water

#2
Mass of sulphur:-

Take a look at this and let me know if you've any doubts further!
Answer:
Force=mass ×acceleration.
20=10×acceleration.
20=10a.
a=2m/s^2.
Answer:
the reaction is: Na2CO3 + 2HCl ===》 2NaCl + H2O + CO2(g)