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True [87]
3 years ago
7

A substance made up of two or more types of atoms that are NOT chemically combined is called a(n)

Chemistry
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

pure substance

Explanation:

it does not combine to anything.

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An ice cube melts and then the liquid water evaporates. Which statement is true about the mass of water that goes through each c
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Answer:

it changes.

Explanation:

when in solid form it has an amount of mass. but when evaporated, water is pretty much massless.

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More than ½ of the world's forests have been lost to deforestation. True False
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The answer is false
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When iron(II) chloride reacts with silver nitrate, iron(II) nitrate and silver chloride are produced. The balanced equation for
kati45 [8]

<u>Answer:</u> The moles of silver nitrate reacted is 5.72 moles, moles of iron (II) nitrate produced is 2.86 moles and moles of silver chloride produced is 5.72 moles

<u>Explanation:</u>

We are given:

Moles of iron (II) chloride = 2.86 moles

For the given chemical equation:

FeCl_2(aq.)+2AgNO_3(aq.)\rightarrow Fe(NO_3)_2(aq.)+2AgCl(s)

  • <u>For silver nitrate:</u>

By Stoichiometry of the reaction:

1 mole of iron (II) chloride reacts with 2 moles of silver nitrate.

So, 2.86 moles of iron (II) chloride will react with = \frac{2}{1}\times 2.86=5.72mol of silver nitrate

Moles of silver nitrate reacted = 5.72 moles

  • <u>For iron (II) nitrate:</u>

By Stoichiometry of the reaction:

1 mole of iron (II) chloride produces 1 mole of iron (II) nitrate

So, 2.86 moles of iron (II) chloride will produce = \frac{1}{1}\times 2.86=2.86mol of iron (II) nitrate

Moles of iron (II) nitrate produced = 2.86 moles

  • <u>For silver chloride:</u>

By Stoichiometry of the reaction:

1 mole of iron (II) chloride produces 2 moles of silver chloride

So, 2.86 moles of iron (II) chloride will produce = \frac{2}{1}\times 2.86=5.72mol of silver chloride

Moles of silver chloride produced = 5.72 moles

Hence, the moles of silver nitrate reacted is 5.72 moles, moles of iron (II) nitrate produced is 2.86 moles and moles of silver chloride produced is 5.72 moles

7 0
3 years ago
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 99.1 moles of water vapor?
denpristay [2]
It would take 198 mol to produce
5 0
3 years ago
There are<br><br> molecules of carbon dioxide (CO2) in 102.5 grams.
Gekata [30.6K]

Answer:

1.403x10²⁴ molecules

Explanation:

In order to calculate how many molecules of CO₂ are there in 102.5 g of the compound, we first<u> convert grams to moles</u> using its <em>molar mass</em>:

  • 102.5 g ÷ 44 g/mol = 2.330 mol CO₂

Now we <u>convert moles into molecules </u>using <em>Avogadro's number</em>:

  • 2.330 mol * 6.023x10²³ molecules/mol = 1.403x10²⁴ molecules
7 0
3 years ago
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