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gregori [183]
3 years ago
10

In a chemical reaction, the elements magnesium and chlorine combined to form magnesium chloride (MgCl2). Which statement

Chemistry
1 answer:
Mrac [35]3 years ago
7 0

Answer

D There are just as many magnesium atoms after the reaction as there were before it

Explanation:

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3 years ago
How many milliliters of 0. 0140 m na2s2o3 solution are needed to dissolve 0. 590 g of agbr? agbr(s) 2na2s2o3(aq)→na3ag(s2o3)2(aq
Marina86 [1]

The molarity of the solution can be used to give the moles and the volume of the solution. The 0.0140 M sodium thiosulfate needs 225 ml of volume.

<h3>What is molarity?</h3>

Molarity is the property of the solution that is given by the ratio of the moles of the solute to the volume of the solution in liters.

Given,

Molarity of Sodium thiosulfate = 0.0140 M

Mass of solute (AgBr) = 0.590 gm

Molar mass of AgBr = 187.77 g/mol

First moles from the mass can be calculated as,

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n = 0.590 g ÷ 187.77 g/mol

= 0.00314 moles

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= 0.00314 moles ÷ 0.0140

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Learn more about molarity here:

brainly.com/question/13889022

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