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2 years ago

Which pairs of matter demonstrate the law of conservation?

Chemistry

2 answers:

Oksana_A [137]2 years ago

6 0

Which pairs of matter demonstrate the laws of conservation?

The only correct ones are:

a Snowman and the melted remains of the same Snowman,

a lump of clay and the same lump broken into three pieces,

one apple and the same Apple cut into slices.

100% just had homework asking this same question got a 100% on USA TP

noname [10]2 years ago

4 0

Answer: There are 3 answers.

* A Snowman.

* The melted remains of the same snowman.

* A lump of clay.

* The same lump broken into three pieces.

* One apple.

* The same apple cut into slices.

Answer key Below:

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What is the difference between a physical and chemical change? (Use words reactants, products, atoms and molecules.)

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Answer:

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2 years ago

3. How many moles of silver is 8.46x1024 atoms of<br> silver?

ioda

Answer:

<h2>14.05 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{8.46 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.053156$

We have the final answer as

<h3>14.05 moles</h3>

Hope this helps you

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2 years ago

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