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Shtirlitz [24]
3 years ago
7

Which of the following is a pure substance? Choose all that apply.

Chemistry
2 answers:
worty [1.4K]3 years ago
7 0
Nickel is a pure substance

Rust is also a pure substance
Brums [2.3K]3 years ago
6 0
Nickel is a pure substance:
Final answer: B
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What is the molarity of a solution of 58.7 grams of MgCl2 in 359 ml of solution?
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Answer:

1.72 M

Explanation:

Molarity is the molar concentration of a solution. It can be calculated using the formula a follows:

Molarity = number of moles (n? ÷ volume (V)

According to the information provided in this question, the solution has 58.7 grams of MgCl2 in 359 ml of solution.

Using mole = mass/molar mass

Molar mass of MgCl2 = 24 + 35.5(2)

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Molarity = 0.618mol ÷ 0.359L

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