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2 years ago

Which statements describing chemical and nuclear reactions are true?

Chemistry

1 answer:

Arte-miy333 [17]2 years ago

8 0

Answer:

What statements?

Explanation:

they both release harmful chemicals and can pollute the earth and destroy our ecosystems.

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If a microgram is one millionth of a gram (0.000 00 1 g), how many micrograms are there in one gram?

den301095 [7]

Answer:

There are One million micrograms in a gram

Explanation:

A microgram is one Millionth of a gram therefore it take one million of them to equal one gram

7 0

3 years ago

Question is in the screen shot.

monitta

Answer:

Explanation:

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2 years ago

I NEED HELP PLEASE, THANKS! :)

marin [14]

Answer:

$\large \boxed{1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2 }}$

Explanation:

1. Calculate the moles of copper(II) hydroxide

$\text{Moles of Cu(OH)}_{2} = \text{23.45 g Cu(OH)}_{2} \times \dfrac{\text{1 mol Cu(OH)}_{2}}{\text{97.562 g Cu(OH)}_{2}} = \\\\\text{0.240 36 mol Cu(OH)}_{2}$

2. Calculate the molecules of copper(II) hydroxide

$\text{No. of molecules} = \text{0.240 36 mol Cu(OH)}_{2} \times \dfrac{6.022 \times 10^{23}\text{ molecules Cu(OH)}_{2}}{\text{1 mol Cu(OH)}_{2}}\\\\= 1.447 \times 10^{23}\text{ molecules Cu(OH)}_{2}\\\text{The sample contains $\large \boxed{\mathbf{1.447 \times 10^{23}}\textbf{ molecules Cu(OH)}_{\mathbf{2}}}$}$

6 0

3 years ago

I WILL MARK BRAINLIEST!Which of the following statements is true?

PtichkaEL [24]

Answer:

B- fission breaks apart nuclei; fusion puts them back together

6 0

2 years ago

Read 2 more answers

An object that is already moving can . . .

Yuri [45]

An object that is not already moving will begin to move in the direction of the larger force. An object that is already moving will change its speed and/or its direction.

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2 years ago