Question

calculate the mass of molecules of magnesium in its 200g (atomic mass of mg=24 u)​

Answer 1

Explanation:

in 1 gm 4.0359×10^-23 molecules of magnesium

so in 200 gm ,

200× 4.0359×10^-23

= 807.18 × 10^-23 answer

hope it help you.......

Answer 2

Answer:

Given : Mass of earth m=6×10

24

kg

Mass of Sun M=2×10

30

kg

Distance between sun and earth r=1.5×10

11

m

Force of gravitation between them F=

r

2

GMm

F=

(1.5×10

11

)

2

6.67×10

−11

×(6×10

24

)×(2×10

30

)

=3.557×10

22

N