Question

Find the molecular weight of substance if 1.5*10^23 molecules weight 25 grams

Answer 1

Answer:

Explanation:

Mass = no. of molecules / 6.023 * 10^ 23 * Molar mass

 

Molar mass of CO2 = 44g/mol

1.5

⋅

10

25

6.023

⋅

10

23

= 51.5 moles of CO2

51.5

⋅

44g/mol

=

2266

g

r

a

m

s