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Lelu [443]
3 years ago
8

What is the molar mass of a substance

Chemistry
1 answer:
Mazyrski [523]3 years ago
3 0

Answer:

So the molar mass of a chemical compound is defined as the mass of a sample of that compound is divided by the amount of the substance in that sample measured in the moles.

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What is the "reproductive system"
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Answer: The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction

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Explain, in terms of particles, what happens when methane boils and why
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Answer:Butane > ethane > methane, because between bigger molecules there are stronger van der Waals forces and also higher molar mass means they need to be given more energy to have enough kinetic energy to move quickly, freely in gas.

There are multiple butene isomers (Butene) and some (2-Butenes - cis and trans) actually have higher boiling point than n-Butane (there is also Isobutane, of course, with quite much lower boiling point than all of them) and some (1-Butene, Isobutylene) have lower, so this isn't really a fair or simple question. But on simplest level, it can again be said that 1-butene has lower boiling point because it has very similar shape but slightly lower molar mass (2H less) than n-butane.

Explanation:

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2 years ago
Is acid rain corroding a statue an example of physical weathering
muminat

Answer:

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2 years ago
Plant roots do help to anchor sand dunes in one place?
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3 years ago
Write the balanced chemical equation for each of these reactions. Include phases.
Ket [755]

<u>Answer:</u> The chemical equations are given below.

<u>Explanation:</u>

  • <u>For 1:</u>

The chemical equation for the reaction of lead nitrate and sodium hydroxide follows:

Pb(NO_3)_2(aq.)+2NaOH(aq.)\rightarrow Pb(OH)_2(s)+2NaNO_3(aq.)

By Stoichiometry of the reaction:

1 mole of aqueous solution of lead nitrate reacts with 2 moles of aqueous solution of sodium hydroxide to produce 1 mole of solid lead hydroxide and 2 moles of aqueous solution of sodium nitrate.

  • <u>For 2:</u>

The chemical equation for the reaction of lead hydroxide and hydroxide ions follows:

Pb(OH)_2(s)+2OH^-(aq.)\rightarrow [Pb(OH)_4]^{2-}(aq.)

By Stoichiometry of the reaction:

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Hence, the chemical equations are given above.

4 0
3 years ago
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