Question attached ! asap please

Chemistry

1 answer:

bezimeni [28]3 years ago

6 0

Answer:

A. copper is highly water soluble. It will turn into 5 different hydrates as it absorbs more and more water.

b. Glycerol is easily soluble in water, due to the ability of the polyol groups to form hydrogen bonds with water molecules

c. octane is considered to be non-polar, it will not be soluble in water, since water is a polar solvent. This will happen because octane (hydrocarbons in general) contains neither ionic groups, nor polar functional groups that can interact with water molecules.

d. Nitric acid decomposes into water, nitrogen dioxide, and oxygen, forming a brownish yellow solution.

e. Barium carbonate is a white powder. It is insoluble in water and soluble in most acids

Explanation:

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A student wants to prepare exactly 250 ml of a 0.500 m aqueous potassium hydroxide solution. what mass of potassium hydroxide (m

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Molarity is defined as the number of moles of solute in volume of 1 L solution.
the molarity of KOH solution to be prepared is 0.500 M
the volume of solution to be prepared is 250 mL
the number of KOH moles in 1 L - 0.500 mol
therefore number of KOH moles in 250 mL - 0.500 mol/L x 0.250 L = 0.125 mol
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3 years ago

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2 H₂O (l) → 2 H₂ (g) + O₂ (g)

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and number of mol O₂ produced = ½ x 1.59 = 0.796 mol O₂

The ideal gas law is PV = nRT

so V = nRT/P

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V = 19.5 L

<span>So 19.5 L O₂ gas are produced

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3 years ago

In a titration experiment, 31. 4 ml of 1. 120 m hcooh is neutralized by 16. 3 ml of ba(oh)2. what is the concentration of the ba

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