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galina1969 [7]
3 years ago
7

2003 Q 2 Study the information in the table and answer the questions that follow lon Electronic Ionic arrangement radius Na 2.8

0.095 K K 2.8.8 0.133 Mg? 2.8 0.065 Explain why the ionic radius of K* is greater than that of Na* ​
Chemistry
1 answer:
MariettaO [177]3 years ago
8 0

Answer:

Hence

potassium (k) is 2,8,8,1

sodium (Na) is 2,8,1

potassium will have a higher Ionic radius than sodium

Explanation:

Ionic radius has a trend

it increases down the group

and decreases across the period

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2) Liquid State: Called Liquid Water.

3) Gas State: Called Steam.

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3 years ago
An aqueous KNO3 solution is made using 76.6 g of KNO3 diluted to a total solution volume of 1.84 L. (Assume a density of 1.05 g/
defon

Answer:

The answer to your question is Molarity = 0.41

Explanation:

Data

mass of KNO₃ = 76.6 g

volume = 1.84 l

density = 1.05 g/ml

Process

1.- Calculate the molecular mass of KNO₃

molecular mass = 39 + 14 + (16 x 3) = 101 g

2.- Calculate the number of moles

                      101 g of KNO₃  --------------- 1 mol

                       76.6 g of KNO₃ ------------  x

                        x = (76.6 x 1) / 101

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3.- Calculate molarity

Molarity = \frac{number of moles}{volume}

Substitution

Molarity = \frac{0.76}{1.84}

Result

Molarity = 0.41

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