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2 years ago

Which cannot be chemically broken down into simpler substances?

Chemistry

2 answers:

MaRussiya [10]2 years ago

8 0

Elements cannot be chemically broken down into simpler substances

Anna71 [15]2 years ago

6 0

Answer:

Explanation:

elements

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Use kinetic molecular theory to explain why a gas takes the shape and volume of its container

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Imo : Gas particles are in constant, random motion. The volume of gas particles is negligible in comparison to the volume of the container. There are no attractive forces between gas particles.

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2 years ago

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Goshia [24]

Atoms are made up of three subatomic particles called protons, neutrons, and electrons.

Protons and neutrons are located in the nucleus.

All protons have a positive charge.

All neutrons have no charge or are neutral.

Electrons orbit around the nucleus and have a negative charge.

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Determine if the chemical equation is balanced or not balanced. 1N2 + 1H2> NH3

almond37 [142]

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2 years ago

19. What is sthe mass of 6.02 x 1024 atoms

alekssr [168]

The mass of magnesium in $6.02 \times 10^{24}$ atoms is 240 g.

Answer: Option A

<u>Explanation:</u>

First, we have to convert the atoms to moles of magnesium.

We know that $6.02 \times 10^{24}$ atoms are present in 1 mole of magnesium. So,

$\text { 1 atom }=\frac{1}{6.02 \times 10^{24}} \text { moles }$

$6.02 \times 10^{24} \text { atoms }=\frac{6.02 \times 10^{24}}{6.02 \times 10^{23}} \text { moles }=10 \text { moles }$

Thus,

$Mass of M g= molar mass of M g \times No. of moles of M g$

$\text { Mass of } M g=24 \times 10=240 g$

Thus, 240 g of Magnesium is present in $6.02 \times 10^{24}$ atoms.

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2 years ago

Which of the following Substances would have the highest vapor pressure at 298 K?

elena-14-01-66 [18.8K]

The answer is D. hope I was right

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