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aliya0001 [1]
3 years ago
8

Need help with this........................................................

Chemistry
2 answers:
finlep [7]3 years ago
8 0
F student is the answer . enjoy
Marina86 [1]3 years ago
4 0
F student 1 because it is a more logical answer
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A chemist adds 405.0mL of a 0.79M sodium carbonate solution to a reaction flask. Calculate the millimoles of sodium carbonate th
Sophie [7]

Answer:

320 mmol

Explanation:

405.0 mL * 1L/1000 mL = 0.4050 L

0.79 M = 0.79 mol/L

0.79 mol/L * 0.4050 L=0.32 mol

0.32 mol * 10^3 mmol/1 mol = 320 mmol

4 0
3 years ago
How many grams of C8H18<br> is in 405,576.398 mL
nevsk [136]

Molarity X \frac{0.762 mol}{05.576398 L} = Mass is the of C_8H_1_8 is in 405,576.398 mL.

<h3>What is molarity?</h3>

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

Given data:

Molar mass of  C_8H_1_8 = 0.762 mol

Volume of solution = 405,576.398 mL = 405,576.398 mL/1000 = 405.576398 L

Solution:

Step 1: Calculating  moles of C_8H_1_8

• Molarity =\frac{\;Moles \;of \;solute}{\;Volume \;of \;solution \;in \;litre}

• Putting the value in the given formula

• Moles of solute C8H18 = \frac{\;Mass}{\;Molar \;molar \;mass}

• Moles of solute C8H18 = \frac{\;Mass}{0.762 mol}

Now,

Molarity =\frac{\;Moles \;of \;solute}{\;Volume \;of \;solution \;in \;litre}

Molarity =\frac{\frac{\;Mass}{0.762 mol}}{\;Volume \;of \;solution \;in \;litre}

Molarity =\frac{\frac{\;Mass}{0.762 mol}}{405.576398 L}

Molarity X \frac{0.762 mol}{05.576398 L} = Mass

Hence, Molarity X \frac{0.762 mol}{05.576398 L} = Mass is the of C_8H_1_8 is in 405,576.398 mL.

Learn more about molarity here:

brainly.com/question/2817451

#SPJ1

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lara31 [8.8K]

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3)The rate of the forward reaction is equal to the rate of the reverse reaction

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<span>i think one third part of the earth </span>
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