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3 years ago

How many moles of carbon are in 25 grams of carbon

Chemistry

1 answer:

Brut [27]3 years ago

4 0

Answer:

One mole of carbon would look like 25/12.01

Explanation:

Firstly, you will divide 25 by 12.01 and get 2.081598

We know 1 mole equals the gram per atomic mass, so one mole of carbon is 12.01 grams. In conclusion, it would look like 25/12.01.

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Is a mushroom a heterotroph or autotroph

nadezda [96]

Answer:

A mushroom is a heterotroph.

Explanation:

Mushrooms are fungi, which are heterotrophs because they depend on other organisms for their food.

5 0

3 years ago

Read 2 more answers

Water readily sticks to many other substances, a property called ______. Water readily sticks to many other substances, a proper

Ahat [919]

Answer:

Option (2)

Explanation:

Cohesion is usually defined as the contrasting property by which the water molecules are attached to one another, and adhesion is the property by which the molecular substances are linked to the molecules of other substances.

Since, the water molecules are able to form inter-molecular hydrogen bonding, so they are comprised of strong cohesive force.

And, as the water molecules are able to stick to the walls of the container, so they tend to show more of the properties for adhesion.

Thus, according to the given condition, water molecules are sticking to other substances and this is the property of adhesion.

Hence, the correct answer is option (2).

4 0

3 years ago

How does the number of atoms in one mole of argon compare with the number of molecules in one mole of ammonia

AfilCa [17]

They are the same because the definition of a mole is 6.022 x 10^23 molecules or atoms based on whether it is a molecule or element. so there are 6.022 x 10^23 atoms of argon in one mole of argon and 6.022 x 10^23 molecules of ammonia in one mole of ammonia

5 0

3 years ago

2H2 + O2 → 2H2O

Sophie [7]

Answer:

- One mole of oxygen was used in this reaction.

- Two moles of water were produced from this reaction.

Explanation:

In addition: - Two moles of hydrogen were used.

4 0

3 years ago

A certain amount of H2S was added to a 2.0 L flask and allowed to come to equilibrium. At equilibrium, 0.072 mol of H2 was found

SIZIF [17.4K]

Answer:

0.098 moles H₂S

Explanation:

The reaction that takes place is

2H₂(g) + S₂(g) ⇄ 2H₂S(g) keq = 7.5

We can express the equilibrium constant as:

keq = [H₂S]² / [S₂] [H₂]² = 7.5

With the volume we can calculate the equilibrium concentration of H₂:

[H₂] = 0.072 mol / 2.0 L = 0.036 M

The stoichiometric ratio tells us that the concentration of S₂ is half of the concentration of H₂:

[S₂] = [H₂] / 2 = 0.036 M / 2 = 0.018 M

Now we can calculate [H₂S]:

7.5 = [H₂S]² / (0.018*0.036²)

[H₂S] = 0.013 M

So 0.013 M is the concentration of H₂S at equilibrium.

This would amount to (0.013 M * 2.0 L) 0.026 moles of H₂S

The moles of H₂ at equilibrium are equal to the moles of H₂S that reacted.

Initial moles of H₂S - Moles of H₂S that reacted into H₂ = Moles of H₂S at equilibrium

Initial moles of H₂S - 0.072 mol = 0.026 mol

Initial moles of H₂S = 0.098 moles H₂S

8 0

3 years ago