Question

which of the following weighs the most?
i) 32g of oxygen
ii) 2.0g atoms of mitrogen
iii) 0.5 mole of iron
iv) 3.011*10^23 atoms of C

Thank you so much! I really have no idea how to do this.

Answer 1

Actually 32g of oxygen weighs the most.......let's see how it is........

1) 32g of oxygen

n= 32 ÷ 32 =1

n=1

2) 2.0 g of Nitrogen

n= 2÷6.023×10^23

n=3.3×10^-24

3) n=0.5

4) n=3.011×10^23 ÷ 6.023×10^23

n= 0.5

Hence,by comparing all mole values, 32g of oxygen weighs the most!! Thank you

Answer 2

Answer:

32 g of oxygen

Explanation:

32 g oxygen= 32*16=512

2 atoms of nitrogen=2*14=28

0.5 mole of iron=0.5*55=27.5

3.011*10^23 atoms of c =3.011*10^23*12= 36.12 *10^23

     it is easy method to calculate this....

i hope it's helpful to you.......