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1 year ago

You need to prepare 2.00 L of 0.100 M Na2CO3 solution. The best procedure is to weigh out: ___________

Chemistry

2 answers:

lyudmila [28]1 year ago

7 0

It would be C I believe

jeka941 year ago

4 0

Answer:

The answer to your question is letter C

Explanation:

Data

Volume = 2 L

Molarity = 0.100 M

Molecular weight Na₂CO₃ = (2 x 23) + (1 x 12) + (3 x 16)

= 46 + 12 + 48

= 106 g

Process

1.- Calculate the grams of Na₂CO₃ needed

106 g ---------------- 1 mol

x ---------------- 0.1 moles

x = (0.1 x 106) / 1

x = 10.6 g

2.- Calculate the grams of Na₂CO₃ needed for 2 liters of solution

10.6 g -------------- 1 liter

x -------------- 2 liters

x = (10.6 x 2) / 1

x = 21.2 grams of Na₂CO₃

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Explanation:

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