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tangare [24]
3 years ago
14

What phase(s) of matter are the elements in Main Group 8?

Chemistry
1 answer:
DanielleElmas [232]3 years ago
6 0

Answer:

Solids.

Explanation:

Group 8 on the Periodic Table consists of transition metals:

- Fe (Iron)

- Ru (Ruthenium)

- Os (Osmium)

- Hs (Hassium)

Usually, transition metals are solids.

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If you run the reaction to make water: 2H2 + O2 → 2H2O, starting with 3.0 moles of hydrogen gas and 2.0 moles of oxygen gas, wha
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Answer:

54 g is the theoretical yield

Explanation:

This is the reaction:

2H₂ + O₂ → 2H₂O

So 2 moles of hydrogen react with 1 mol of oxygen, to produce 2 mol of water.

If I have 3 moles of H₂ and 2 moles of O₂, the my limiting reactant is the hydrogen.

1 mol of O₂ react with 2 moles of H₂

S 2 mol of O₂ would react with 4 moles (I only have 3 moles)

Then, ratio is 2:2 the same as 1:1

As 2 mol of H₂ produce 2 moles of water, 3 moles of H₂ will produce 3 moles of H₂O.

This is the theoretical yield in moles. Let's convert them to mass (mol . molar mass)

3 mol . 18g/m = 54 g

7 0
3 years ago
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Answer:

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