How many moles are there in 2.6 x 10^24 atoms of calcium? a .7.0 x 10-24 moles of ca b. 4.4 moles c. 168.36 moles d. 10 moles

There are
6.022140857
(
74
)
×
10
23

calcium

atoms
in 1 mole of
C
a
.

Explanation:
You have specified
2.1
×
10
24
calcium atoms.

So
2.1
×
10
24
⋅
calcium atoms
6.022
×
10
23
⋅
calcium atoms mole
1=??mol

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.

Do you have any options for this question?