Question

How many molecules are in 45.0 grams of NaCl

Answer 1

3.5*10^23

Step-by-step explanation:

divide 45/molar mass

then multiple the answer to Avogadro's number

Answer 2

10/13 × 6.022×10²³

Step-by-step explanation:

ans: given mass / molar mass = number of moles

(M ).

number of moles(M) = number of molecules / avagadro number ...

=molar mass of NaCl = 58.5 gram

45/58.5 × 6.022 ×10²³

= 10/13 × 6.022 × 10²³ is the required number