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icang [17]
2 years ago
15

I have to re ask this but pls help me I don't have a lot of time

Chemistry
2 answers:
zhuklara [117]2 years ago
5 0

Answer:a

Explanation:

Cloud [144]2 years ago
3 0

Answer:

Hello there!

If i'm doing this correctly it is A (125 g).

Hope that helped, if I wasn't correct feel free to tell me.

Have a great day!

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An element with a mass number of 11 and an atomic number of 5 has how many<br> neutrons?
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Answer:

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Explanation:

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A 7.00-mL portion of 8.00 M stock solution is to be diluted to 0.800 M. What will be the final volume after dilution? Enter your
amm1812

Explanation:

The number of moles of solute present in liter of solution is defined as molarity.

Mathematically,         Molarity = \frac{\text{no. of moles}}{\text{Volume in liter}}

Also, when number of moles are equal in a solution then the formula will be as follows.

                     M_{1} \times V_{1} = M_{2} \times V_{2}

It is given that M_{1} is 8.00 M, V_{1} is 7.00 mL, and M_{2} is 0.80 M.

Hence, calculate the value of V_{2} using above formula as follows.

                    M_{1} \times V_{1} = M_{2} \times V_{2}

                 8.00 M \times 7.00 mL = 0.80 M \times V_{2}

                      V_{2} = \frac{56 M. mL}{0.80 M}

                                  = 70 ml

Thus, we can conclude that the volume after dilution is 70 ml.

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