help me I’ve been doing this for 2 hours How many molecules of NaCl are in 0.61 moles of NaCl?

1.8 x 1023
2.5 x 1023
3.7 x 1023
4.5 x 1023

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

Ibelieve the answer is weathering,hope my answer has you : ) 

It will be b hydrogen