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e-lub [12.9K]
3 years ago
14

1Explain why the ions of sodium, magnesium and aluminium are smaller than their corresponding atoms.

Chemistry
1 answer:
ella [17]3 years ago
3 0

Answer:

I think magniesum is combined with the sulfer which is why its at 3 omegas.

Hope this helps!

Explanation:

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Natasha2012 [34]
Don’t worry, you’re right :)
7 0
2 years ago
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2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produc
vekshin1

Answer:

A 0.239mol

Explanation:

From the equation:

We were given that 10g of iron was involved in this chemical reaction

We can establish that :

3moles of Fe would produced 4 moles of Hydrogen gas

Therefore:

Number of moles of iron = mass of Fe / mloar mass of iron

Mass of Fe = 10g

Molar Mass of Fe = 55.85g/mol

Therefore, number of moles of iron= 10/55.85

Number of moles of iron = 0.179mol

3moles of Fe would produced 4 moles of Hydrogen gas

So, 0.179mol of Fe would give 0.179x4/3

The number of mole of Hydrogen gas produced is 0.239mol.

3 0
3 years ago
A substance containing atoms of two or more different elements chemically bonded together is called what
fredd [130]
I believe the answer is cheamical.

Hope this helps
8 0
3 years ago
Question 107 points)
____ [38]

Answer:

Evaporation from the hydrosphere provides the medium for cloud and rain formation in the atmosphere. The atmosphere brings back rainwater to the hydrosphere. The atmosphere provides the geosphere with heat and energy needed for rock breakdown and erosion. The geosphere, in turn, reflects the sun's energy back into the atmosphere.

Explanation:

4 0
3 years ago
The solubility of CO2 in water is 0.161 g/100 mL at 20oC and a partial pressure of CO2 of 760 mmHg. What partial pressure of CO2
Schach [20]

<u>Answer:</u> The partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

<u>Explanation:</u>

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

The equation given by Henry's law is:

C_{CO_2}=K_H\times p_{CO_2}       ......(1)

where,

C_{CO_2 = solubility of carbon dioxide in water = 0.161 g/100 mL

K_H = Henry's constant = ?

p_{CO_2} = partial pressure of carbon dioxide = 760 mmHg

Putting values in equation 1, we get:

760mmHg=K_H\times 0.161g/100mL\\\\K_H=\frac{760mmHg}{0.161g/100mL}=4720.5g.mmHg/100mL

Now, calculating the pressure of carbon dioxide using equation 1, we get:

C_{CO_2 = solubility of carbon dioxide in water = 0.886 g/100 mL

K_H = Henry's constant = 4720.5 g.mmHg/100 mL

p_{CO_2} = partial pressure of carbon dioxide = ?

Putting values in equation 1, we get:

p_{CO_2}=4720.5g.mmHg/100mL\times 0.886g/100mL=4182.4mmHg

Hence, the partial pressure of carbon dioxide having solubility 0.886g/100mL is 4182.4 mmHg

4 0
3 years ago
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