4 years ago

How many atoms are in 5.7 moles of copper atoms?

1 answer:

4 0

Number of copper atoms = moles of copper x Avogadro's number = 5.7x6.02x10^23 = 3.43x10^24 atoms.

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Yuki888 [10]

You’ll need to set up a convention from moles over atoms to atoms over moles

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3 years ago

miskamm [114]

Lake water is favorable to Prokaryotic cell.

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3 years ago

german

Answer: 8.57 ml of KOH is required to reach the equivalence point.

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HNO_3$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is KOH.

We are given:

$n_1=1\\M_1=0.120M\\V_1=60.0mL\\n_2=1\\M_2=0.840M\\V_2=?$

Putting values in above equation, we get:

$1\times 0.120\times 60.0=1\times 0.840\times V_2\\\\V_2=8.57mL$

Thus 8.57 ml of KOH is required to reach the equivalence point.

8 0

4 years ago

ruslelena [56]

I believe your answer will be D.

6 0

3 years ago

Romashka [77]

I think u should divide the number by 2 i think.

4 0

3 years ago