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aleksklad [387]
3 years ago
8

One way to determine the empirical formula of a compound involves using the percent composition of the compound.

Chemistry
1 answer:
iragen [17]3 years ago
6 0
True! You can use the percentage to determine the amount of moles of each substance in the compound, and then use that information to find the empirical formula.
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Explanation:

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During an experiment, if you purposely change the temperature to test a hypothesis, the temperature is called the _____ variable
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What volume (in mLs) of 1.50 M Na2CO3 solution can be prepared from 3.975 g of solid Na2CO3?
Pepsi [2]
<h3>Answer:</h3>

56.25 mL

<h3>Explanation:</h3>

We are given;

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Mass of Na₂CO₃ = 3.975 g

We are required to calculate the volume of Na₂CO₃

Step by step explanation:

<h3>Step 1: Determining moles of Na₂CO₃</h3>

Molar mass of Na₂CO₃ = 106 g/mol

But; moles = Mass ÷ molar mass

Therefore;

Moles of Na₂CO₃ = 3.975 g ÷ 106 g/mol

                             = 0.0375 moles

<h3>Step 2: Calculating the volume of Na₂CO₃</h3>

Relationship between volume, moles and molarity is given by;

Molarity = Moles ÷ Volume

Thus;

Volume = moles ÷ Molarity

             = 0.0375 mole × 1.5 M

             = 0.05625 L

But; 1 L = 1000 mL

Therefore; Volume = 56.25 mL

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3 years ago
15. How many atoms are in Li(OH2)3?
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6 Atoms

Explanation:

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O has 1 atom

H has 2 atoms

<h3>Hope this Helps!!</h3>

:)

8 0
3 years ago
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