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Vlad1618 [11]
3 years ago
10

How many grams of KOH are needed to make 0.500 L of a 0.10 M solution

Chemistry
1 answer:
Zolol [24]3 years ago
6 0

Answer:

2.8 g KOH

Explanation:

We can find the amount of moles we need by multiplying 0.500 L and the molarity given, 0.10 M (molarity is moles of solute divided by liters of solution). The liters cancel out, leaving us with moles; we can then take the moles and convert it to grams of KOH by using the molar mass of KOH.

0.500 L x 0.10 mol/1 L x 56.106 g /1 mol = 2.8 g KOH (two significant figures)

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Which of the following compounds would contain an electrostatic attraction as bonds between ions?
4vir4ik [10]

Answer:

iron sulfate

Explanation:

Electrostatic attraction as bonds between ions is characteristic of the electrovalent bond or the ionic bond

In this type of bond, there is electron transfer from one atom to another. The atom that looses electrons become positively charged while the atom that gains electrons becomes negatively charged.

In iron sulfate, there is electrostatic attraction between Fe II ions and sulphate ions, making iron sulfate an ionic compound.

6 0
3 years ago
A 5.0-kg box is pushed across the floor with a force of 32 N. What is the frictional force on the box if the box's acceleration
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3 years ago
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A 1.0 × 10−3 mol/dm3 solution of hydrochloric acid has a pH of 3.0
vivado [14]

Answer:

5

Explanation:

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pH = -log[1.0 x 10–5]

pH = -log[10–5]

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8 0
2 years ago
The question is 22 I need help with
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The smell of hot food moves faster than the smell of cold food. Which property of gas is responsible for this? A. The kinetic en
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A. The kinetic energy of gas particles is higher in hot food than in cold food.

Explanation:

The smell of a hot food moves faster than the smell of a cold food because the kinetic energy of gas particles is higher in hot food than in cold food.

Let us establish that the smell of the food perceived are gases from the food.

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learn more:

Molecular theory brainly.com/question/12362857

#learnwithBrainly

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