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2 years ago

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced.

Chemistry

1 answer:

Andreyy892 years ago

3 0

Answer: Thus, the number of moles of aluminum chloride could be produced from 27.0 g of aluminum is 1.0 mol.

Explanation:

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Which of the following is an advantage of using biopower?

zavuch27 [327]

Answer: Option (C) is the correct answer.

Explanation:

Biopower means production of electricity with the help of biomass. The unused wood, crops, agricultural residue, animal residue etc when burned then they help in generating biopower.

It is a renewable energy. Since biomass is readily available in most of the places. Therefore, the advantage of biopower is that it is also readily available in most places.

For example, bacterial decay produces a certain amount of heat which further helps in the production of energy.

8 0

2 years ago

Read 2 more answers

Potassium hydrogen phthalate, KHP, is a monoprotic acid often used to standardize NaOH solutions. If 0.212 g of KHP are dissolve

maxonik [38]

The molarity of the NaOH solution is 0.03 M

We'll begin by calculating the mole of the KHP

Mass = 0.212 g
Molar mass = 204.22 g/mol
Mole of KHP =?

Mole = mass /molar mass

Mole of KHP = 0.212 / 204.22

Mole of KHP = 0.001 mole

Next, we shall determine the molarity of the KHP solution

Mole of KHP = 0.001 mole
Volume = 50 mL = 50/1000 = 0.05 L
Molarity of KHP =?

Molarity = mole / Volume

Molarity of KHP = 0.001 / 0.05

Molarity of KHP = 0.02 M

Finally , we shall determine the molarity of the NaOH solution

KHP + NaOH —> NaPK + H₂O

From the balanced equation above,

The mole ratio of the acid, KHP (nA) = 1
The mole ratio of base, NaOH (nB) = 1

From the question given above, the following data were obtained:

Volume of acid, KHP (Va) = 50 mL
Molarity of acid, KHP (Ma) = 0.02 M.
Volume of base, NaOH (Vb) = 35 mL
Molarity of base, NaOH (Mb) =?

MaVa / MbVb = nA / nB

(0.02 × 50) / (Mb × 35) = 1

1 / (Mb × 35) = 1

Cross multiply

Mb × 35 = 1

Divide both side by 35

Mb = 1 / 35

Mb = 0.03 M

Thus, the molarity of the NaOH solution is 0.03 M

Complete question:

See attached photo

Learn more about titration: brainly.com/question/25866669

6 0

2 years ago

Which Of the following, the best explanation for the fact that most gases are easily compressed is that the molecules in a gas a

Otrada [13]

Answer: A. are relatively far apart

Explanation:

Compressbility is the ability of compound to reduce in size when pressure is applied.

Gaseous state is a state in which the particles are loosely arranged and have a lot of space between them. Thus molecules can be easily compressed.

They have highest kinetic energy. This state has indefinite volume as well as shape. The molecules in the gaseous state move faster with an increase in temperature as the kinetic energy increases with increase in temperature.

Thus most gases are easily compressed is that the molecules in a gas are in constant motion are relatively far apart.

4 0

2 years ago

What is the m of a solution where 0.500 moles of a salt are dissolved in 100.0 ml of solution? 25.0m 5.00m 50.0m o.500m 2.50m?

My name is Ann [436]

Molarity=moles/litre
molarity=0.5/0.1
molarity=5.00m

3 0

3 years ago

Which statement describes one feature of Rutherford model of the atom

serious [3.7K]

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<em><u>The Rutherford model shows that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus in set, predictable paths.</u></em>

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2 years ago