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MaRussiya [10]
3 years ago
9

Magnesium carbonate decomposition on heating to form magnesium oxide and carbon dioxide. how many grams of magnesium oxide will

be formed if 20 grams of magnesium

Chemistry
1 answer:
KIM [24]3 years ago
3 0
This is how you would do it. set up the rxn. balance, in this case you didn't need to. make a grid and cancel out units.

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In a mixture of argon and hydrogen occupying a volume of
kobusy [5.1K]

This isn't a full question!

3 0
3 years ago
What are four signs a chemical reaction has taken place?
RoseWind [281]

1. Change in temperature

2. Gas given off (bubbles)

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4. Salts made

Happy to help! Please mark as Brainliest!

6 0
3 years ago
How many molecules of water are there in 0.234 L of water
tankabanditka [31]

Answer:

7.82x10^24 molecules of water

Explanation:

H2O=18.015 g/mol   Avogadro's #=6.022x10^23 molecules

0.234L x 1000g/1L x 1 mol H2O/18.015 g x 6.022x10^23 = 7.82x10^23 molecules of water

3 0
2 years ago
In a solution, the solvent is the substance in greater supply. True or False
Dmitriy789 [7]

Answer:

true

Explanation:

in a solution solvent is the one in which solute is been dissolved that is solvent is in greater amount.

7 0
3 years ago
exactly 1mol of n2o4 is placed in an empty 1 l container. if at equilibrium n2o4 is dissociated 20%, what is the value of equili
egoroff_w [7]

Answer:

K = 0.2

Explanation:

Based on the chemical dissociation of N₂O₄:

N₂O₄ ⇄ 2NO₂

The equilibrium constant, K, of the reaction is:

K = [NO₂]² / [N₂O₄]

Now, if 20% of N₂O₄ is dissociated, 80% remains as N₂O₄ = 0.8mol/L = 0.8M

as 20% is dissociated, 0.2moles of N₂O₄ were dissociated and 0.2*2 = 0.4mol/L of NO₂ are produced.

Replacing in K:

K = [0.4M]² / [0.8M]

<h3>K = 0.2</h3>
5 0
3 years ago
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