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azamat
2 years ago
12

Which one is it ? I need help

Chemistry
2 answers:
Lostsunrise [7]2 years ago
8 0
It would 3 because if you read it tells you the answer
masya89 [10]2 years ago
3 0

essay of most significant learning about the topics in module 9,11 and 12

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Atomic mass Calcium ( Ca) = 40.078 u.m.a

40.078 g --------------- 6.02x10²³ atoms
187 g ------------------- ??

187 x ( 6.02x10²³) / 40.078 =

1.125x10²⁶ / 40.078 = 2.808x10²⁴ atoms

hope this helps!




4 0
3 years ago
How is density found
Yanka [14]
Through mass and volume. 
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Substitute immutable groups in chemical compounds to avoid ambiguity.

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Explanation:

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Advocard [28]

There you go, hope this helps!


8 0
3 years ago
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