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Damm [24]
3 years ago
9

How many grams of magnesium contain 4.80 x 10^25 atoms of magnesium

Chemistry
1 answer:
Aloiza [94]3 years ago
6 0

Answer:

mass Mg = 1.937 Kg

Explanation:

from periodic table for Mg:

⇒ molecular mass Mg = 24.305 g/mol

∴ mol ≡ 6.022 E23 atoms

⇒ mol Mg = (4.80 E25 atoms)×(mol/6.022 E23 atoms)

⇒ mol Mg = 79.708 mol

⇒ mass Mg = (79.708 mol)×(24.305 g/mol)

⇒ mass Mg = 1937.3 g

⇒ mass Mg = 1.937 Kg

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Equilibrium describes the balance that results from a forward and reverse reaction proceeding at equal rates. Since reaction rat
Delvig [45]

Answer:

b) the reaction proceeds to a new equilibrium in the direction that offsets the change.

Explanation:

According to Le Chatelier's principle, when a system experiences a constraint such as a change in pressure, temperature or concentration, the system will readjust itself in order to annul the constraint.

This simply means that when temperature, concentration or pressure is changed, a new equilibrium position is reached in order to offset the changes in the system.

5 0
3 years ago
Assuming the relative rate of secondary hydrogen atom abstraction for the chlorination of propane is 3.9 times faster than the r
Ghella [55]

Answer:

% of n-propyl chloride = 43.48 %

Explanation:

There are 2 secondary hydrogens and 6 primary hydrogens

The rate of abstraction of seondary hydrogen = 3.9 X rate of abstraction of primary hydrogen

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Total probability = 3.9

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7 0
3 years ago
Assessment timer and count
Aneli [31]

Answer:

I think it's the last one.

Explanation:

Because gravity is what makes our planets stay still and stops our planets from dropping and as they orbit around the sun that's what keeps the moon from bumping into earth. I hope this helps and makes sense.

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3 0
3 years ago
Which of the following describes the correct order for relative solubility of minerals in sedimentary rocks?
NARA [144]

Answer:

Evaporate minerals are more soluble than calcite and quartz.

Explanation:

Evaporate minerals are the water soluble minerals which at higher concentration precipitate out and crystallized forming rocks.

example of chemicals present are:

chlorides and sulphates.

Quartz is silica (very less soluble, or insoluble)

Calcite is calcium carbonate, again an insoluble salt.

Thus

Evaporate minerals are more soluble than calcite and quartz.

8 0
3 years ago
The price of gold is $40.63/g. How many kg of gold would be worth $100?
lora16 [44]

Answer:

0.00246kg

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1g = $40.63

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2.46/1000 g = 0.00246kg

3 0
3 years ago
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