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bazaltina [42]
3 years ago
5

How many moles are in 15 grams of calcium

Chemistry
2 answers:
ivanzaharov [21]3 years ago
5 0
Atomic mass Ca = 40.0 u.m.a

1 mole Ca ------------- 40.0
? moles Ca ---------- 15 g

15 x 1 / 40 = 0.375 moles of Ca


chubhunter [2.5K]3 years ago
3 0
Approximately 0.374 moles
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Thus from the above conclusion we can say that Opinions are differ from facts as that we cannot change the facts but opinions can be changed as in first example it is given anthracite is better than bituminous coal may be there is another coal which is more better than anthracite. So here opinion is changed.

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8 0
2 years ago
A van moves with a constant speed
Kitty [74]

Answer:

1.5 hours or 90 minutes

Explanation:

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4 0
3 years ago
Hey I'm a newbie any help please with this
solniwko [45]
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makkiz [27]

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3 years ago
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