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natali 33 [55]
3 years ago
5

Name two elements that you would expect to have properties very much like those of calcium

Chemistry
1 answer:
Semmy [17]3 years ago
7 0
Beryllium, magnesium, strontium, barium, or radium. Hope this helped :))
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Q #13 How many moles of MgCl2 are there in 350. g of compound?
Vaselesa [24]

<u>Answer:</u>

3.67 moles

<u>Step-by-step explanation:</u>

We need to find out the number of MgCl_2 moles present in 350 grams of a compound.

Molar mass of Mg = 24.305

Molar mass of Cl_2 = 35.453

So, one mole of MgCl_2 = 24.305 + (35.453 * 2) = 95.211g

1 Mole in 1 molecule of MgCl_2 = \frac{1}{95.211} = 0.0105

Therefore, number of moles in 350 grams of compound = 0.0105 * 350

= 3.67 moles



8 0
4 years ago
A. 6.07 x 10-15<br> How many significant figures are there in this equation
Harman [31]

Answer:

3

Explanation:

In scientific notation, the number of integers in the first part will always be the amount of significant figures.

For example,

1) 1.542505 x 10^17 =7 significant figures

1) 1.54 x 10^17 =3 significant figures

8 0
4 years ago
HELP PLEASE!!!!
Elena-2011 [213]

Answer:

This is not accurate we dont know what your asking us?

Explanation:

4 0
3 years ago
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