Question

1 When a compression in a sound wave waches the eardrum, The pressure outside it .____________. 1(decrease) 2 (increase) 3 (remain same) 4 (none fo these).
2 Complete the reaction
2_______ +H2O +CO2 ------->2NaHCO3
1(NaOH) 2 (NaHCO3) 3 (Na2SO4) 4 (Na2CO3)​

Answer 1

Answer:

answer for second questions is :-na2 co3

Answer 2

Answer:

1 Increase

2NaOH

Explanation:

Hope this helps