3 years ago

I need help plzzzzzzzzzz on number 6

Chemistry

1 answer:

Fed [463]3 years ago

6 0

It I c because it is asking is the wind hard
Enough

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A solid keeps its shape due to which of the following factors? Space between particles Attractive forces between particles The t

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What is the number of moles of solute in 250 mL of a 0.4 M solution?

mafiozo [28]

Answer:

0,1 mol

Explanation:

We know that the formula of concentration is C= moles of solute/ volume

0,4 M= moles of solute/ 250 mL

Convert mL to L 250 mL =0,25 L

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12. Study the chemical reaction below, what are the product(s) in the reaction and what are the reactant(s) in the reaction (Sho

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The products are Copper and Aluminium chloride.

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A sample contains 25% parent isotope and 75% daughter isotopes. If the half-life of the parent isotope is 72 years, how old is t

alisha [4.7K]

The radioactive decay obeys first order kinetics

the rate law expression for radioactive decay is

$ln\frac{[A_{0}]}{[A_{t}]}=kt$

Where

A0 = initial concentration

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t = time

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For first order reaction the relation between rate constant and half life is:

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Given

At = 0.25 A0

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Simply two half lives

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Mixture with two or more substances that are evenly mixed

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