Question

help me if you are a good chemist
thank you

Answer 1

Answer:

Hey buddy

Explanation:

mass of 1mole NO2 is 14+2×16 which is equal to 46amu. so mass 2moles of NO2 is 2×46 that is 92.

2)sodium normally reacts with O2 and form sodiumperoxide i.e.Na2O2 so mass of 1mole sodium peroxide is 22 ×2+16×2 that is 76.so mass of 0.5mole will be 76/2 and it is 38.

3)mass of 1mole water is 18.similarly mass of 0.01 mole water will be 18/100 i.e. 0.18

4)mass of 1mole NaCl is 22+35.5= 57.5

therefore mass of 4 moles of NaCl is 4×57.5.

5)Buddy try to do it yourself and understand it.

ALL THE BEST