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Maurinko [17]
3 years ago
14

According to the law of conservation of matter, which statement about chemical reactions is true?

Chemistry
1 answer:
Sholpan [36]3 years ago
7 0
Atoms cannot be created nor desroyed

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when the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution
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Increases by 1

Explanation:

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The ability to do work is energy.

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Solid magnesium has mass of 1300g and a volume of 743cm . what's the density of magnesium?
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How many moles are in a solution that has a molarity of 3.0M and a volume of 1500 ml.
Bad White [126]

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1.25 Moles

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1.25 moles of solute

Explanation:

Molarity is defined as the number of moles of solute per liter of solution.

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We are given the molarity and volume, both of which have the correct units. All we have to do is rearrange the equation to find the number of moles. You can do this by multiplying both sides of the equation by the volume to cancel it out on the right hand side. Afterwards, you should end up having the volume multiplied by the molarity equaling the number of moles of solute like so:

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The comparison of the masses of equal volumes of material is also defined as
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