Calculate mass % of nitrogen and oxygen in NO2.

Explanation:

I'm not too sure but I would find the molar mass of nitrogen dioxide and then divide.

N - 14.01

O - 16.00

(14.01) + 2(16.00)

14 01 + 32.00 = 46.01

14.01 / 46.01 = 0.3044

30.4%

32 / 46.01 = 0.6955

69.6%

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602