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3 years ago

1. How do you determine how many protons are in a neutral element?

Chemistry

1 answer:

docker41 [41]3 years ago

6 0

Answer:

The number of protons in an atom is always equal to the atomic number.

Explanation:

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How many ml of concentrated hydrochloric acid would be required to make 1 L of a 0.2 M solution? Assume that concentrated hydroc

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Answer: The volume of concentrated hydrochloric acid required is 16.53 mL

Explanation:

To calculate the volume of concentrated solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted solution

We are given:

Conversion factor: 1 L = 1000 mL

$M_1=12.1M\\V_1=?mL\\M_2=0.2M\\V_2=1L=1000mL$

Putting values in above equation, we get:

$12.1\times V_1=0.2\times 1000\\\\V_1=16.53mL$

Hence, the volume of concentrated hydrochloric acid required is 16.53 mL

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