Answer rrrrrrrrr....

asked Aug 20, 2021 30.6k views

1 vote

8.5k points

0 Comments

Please log in or register to add a comment.

3 votes

Answer:

The answer is "Option b".

Step-by-step explanation:

$\to \text{number of moles} = \frac{\text{number of atoms}}{\text{avogadro number}}$

$= (7.0 * 10^(19))/(6.0221 * 10^(23))\\\\= 1.16 * 10^(-4) \ moles\\\\ =1.2 * 10^(-4) \ moles$

$\to \text{sample mass}= \text{number of moles} * \text{molar mass}$

$=1.16 * 10^(-4)* 58.9\\\\=0.00685 \\\\ = 6.85\ g$

Shonzilla answered Aug 26, 2021

8.6k points

0 Comments

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.