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solong [7]
3 years ago
5

What is the difference between a mixture, a solution, and a pure substance?

Chemistry
2 answers:
konstantin123 [22]3 years ago
5 0
A mixture is a material made up of two or more different Chemical substance/substances which are not chemically combined, a solution is a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility, and a pure substance is a substance that has a fixed chemical composition
vichka [17]3 years ago
4 0
A mixture is a compound of two or more substances a pure substance is only made of one kind of atom and a solution is composed of a liquid substance made of two or more types of atoms
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The radioactive decay of a certain sample produced 846 disintegrations per minute. exactly 3.00 days later, the rate of decay wa
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Answer:

\boxed{\text{1.81 da}}

Explanation:

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\ln\dfrac{A_{0}}{A_{t}} = kt

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\ln \dfrac{846}{269} = k \times 3.00\\\\\ln3.145 = 3.00k\\1.146 = 3.00k\\\\k =\dfrac{1.146}{3}\\\\k = \text{0.382 /da}\\

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The half-life for decay is \boxed{\textbf{1.81 da}}.

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