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Anarel [89]
2 years ago
14

Question 3

Chemistry
1 answer:
igomit [66]2 years ago
4 0

Answer:

1.04 moles

Explanation:

1 mole of MgF2 = 62.301

65.0÷62.301=1.04

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Noah and Nina are 15 m apart in a closed room. Noah says the same sentence twice. The first time, Nina does not hear the sound,
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The air molecules in the compressions of the second wave are denser, so the sound is louder.

<h3>What is a sound wave?</h3>

Sound waves are longitudinal waves that travel through a medium like air or water.

In a closed room, Noah and Nina are sitting 15 m apart.

As Noah says the same sentence twice, Nina does not hear the sound the first time but she does hear the sentence the second time.

This happens as the air molecules in the compressions of the second wave are denser. As a result, the sound is louder.

The correct option is ''The air molecules in the compressions of the second wave are denser, so the sound is louder''.

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For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂):(b) Assuming that ΔS° and ΔH° change little wi
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The following is the relationship between  ΔG°,  ΔH, and  ΔS°:

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the enthalpy change,  ΔH

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If you know the number of protons what else do you know the number of?
pav-90 [236]
You know the atomic number
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