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NeTakaya
3 years ago
10

How many moles are in 15.0 grams of calcium (Ca)?

Chemistry
2 answers:
borishaifa [10]3 years ago
5 0
1 mol ---- 40g
X --------- 15g
X = 15/40 = 0,375 moles

:)
tatuchka [14]3 years ago
5 0

Answer:

The correct answer is option A.) 0.374 moles

Explanation:

Hello!

Let's solve this!

Calcium (Ca) has a mass of 40g / mol

In this case we have 15 g of Ca.

We need to calculate the amount of moles so the operation to be performed is as follows:

mol Ca = 15g * (1mol / 40g) = 0.375 mol

We conclude, after the calculations, that the correct answer is option A.) 0.374 moles

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5 0
2 years ago
The theoretical yield for a reaction is 55.9 g LiCl. The actual yield is 24.6 g LiCl. What is the percent yield of the reaction?
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7 0
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What is a good indicator for titrating potassium hydroxide with hydrobromic acid?
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4 0
3 years ago
Please Help! It says fill in the blanks to complete the Punnett square below to show the results of a cross between a homozygous
makkiz [27]

Answer:

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Explanation:

Hello,

The Punnett square for this cross turns into:

\left[\begin{array}{ccc}&G&g\\G&GG&Gg\\G&GG&Gg\end{array}\right]

It means that the genotypes and phenotypes are:

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Best regards.

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