What is the pH of a .000243 M solution of potassium hydroxide solution?

Chemistry

2 answers:

VikaD [51]3 years ago

4 0

1.03 babes........:.::

Evgesh-ka [11]3 years ago

3 0

1.03!! Very easy you welcome:)

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How many protons and electrons are present in the mg2+ ion? 1. 14 protons, 14 electrons 2. 12 protons, 10 electrons 3. 12 proton

Nataly_w [17]

There are 12 protons and 10 electrons in a Mg2+ ion, the normal amount of neutrons is 12.

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3 years ago

Which of the following sets of empirícal formula, molar mass, and molecular formula is correct?

skad [1K]

Answer:

The option C is correct.
CH4N, 90g, C3H12N3.

Explanation:

Option C:

The molecular formula is C3H12N3.

If we take ratio 3:12:3 that will be equal to 1:4:1 so its empirical formula will be CH4N.
The molar mass of molecular formula = (12×3) + (1×12) +( 14×3) = 98 g

Option A :

In option A , molecular and empirical formula are both correct but molar mass is not valid. It should be 169 acc. to molecular formula.

Option B:

In option B, molecular formual is not valid.
It should be as C6H16O2

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3 years ago

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PilotLPTM [1.2K]

I think it would be habitat

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3 years ago

To make a solution of lemonade, lemon juice and sugar are dissolved in water. the water is the ______ in this example.

vova2212 [387]

To make a solution of lemonade, lemon juice and sugar are dissolved in water. the water is the Solvent in this example.

Solvent Examples. Common examples of solvents consist of water, ethanol, methanol, and acetone. The term 'solvent' may be defined as a substance that has the ability to dissolve a given solute to form a solution with it.

Solvents are substances that are used to dissolve the solutes used in the formulation. These solutes can be solids, liquids, or gaseous in nature. Thus solvents are used to get a solution upon interacting the solute with a suitable solvent.

Solvents are usually, however not usually, liquids. They can also be gases or solids. The material dissolved in the solvent is referred to as the solute. collectively, the solvent and solute comprise the solution.

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1 year ago

Balance the following chemical reactions:

Tcecarenko [31]

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3. Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag

4. MnO₂ + 4HCl → MnCl₂ + 2H₂O + Cl₂

5. Pb(NO₃)₂ + 2NaCl → PbCl₂ + 2NaNO₃

$NaCl+AgNO_3=>NaNO_3+AgC\downarrow$