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snow_lady [41]
3 years ago
10

Distinguish between atom molecules, and ions

Chemistry
1 answer:
NNADVOKAT [17]3 years ago
7 0

Explanation:

Atoms are the smallest unit of matter that can't be broken down chemically. Molecules are groups of two or more atoms that are chemically bonded. Ions are atoms or molecules that have gained or lost one or more of their valence electrons and therefore have a net positive or negative charge.

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A chemist has a 2.0 M solution of copper (II) sulfate. Is he takes 400 mL of this solution and dilutes it with 1200 mL of water,
Ksenya-84 [330]

0.66 M is the accurate molarity of the new solution of volume of 1200 ml.

Explanation:

Data given:

molarity of copper(II) sulphate, Mconc.= 2M

volume of 2M solution taken Vconc. = 400 ml

volume taken for dilution, Vdilute = 1200 ml

molarity of the diluted solution, Mdilute =?

We will use the formula for dilution as

Mconc Vconc = Mdilute x V dilute  (conc is concentrated)

putting the values in the equation:

2 x 400 = Mdilute x 1200

Mdilute = \frac{800}{1200}

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When the solution is diluted to the volume of 1200 ml its molarity changes to 0.66 M.

4 0
3 years ago
12. Why does a water molecule have a bent shape?
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Answer:

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Explanation:

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How will the addition of a catalyst affect the reaction rate of the chemical reaction?
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