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2 years ago

HURRY WHICH ONE IS IT??

Chemistry

2 answers:

aliya0001 [1]2 years ago

8 0

Answer:

Protons are positive, electrons are negative, neutrons have to charge. Most of an Atoms mass comes from its protons and neutrons

Explanation:

I took some notes in my notebook about Atoms.

vichka [17]2 years ago

5 0

What sean said ^^^ ya yaayayayaya

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3 years ago

What is the concentration of a 1:10 dilution of a 2.5 M solution of NaCl? How would you prepare exactly 100 ml of such a solutio

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Answer: The concentration of the solution is 0.25 M

Explanation:

Let the volume of solution of 2.5 M NaCl be 10 mL

We are given:

Dilution ratio = 1 : 10

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To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

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3 years ago

Explain why substances with a lower boiling point are removed near the top of a petroleum fractional distillation tower.

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I hope this helps

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2 years ago

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