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Basic Molarity and Concentration Calculations Leaving Cert

Authored by Darren Heelan

Chemistry

10th - 11th Grade

Used 18+ times

Basic Molarity and Concentration Calculations Leaving Cert
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11 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A student dissolves 2g of a substance in 500ml of water. What is a concentration in grams per litre

1g/l

2 g/l

0.5 g/l

0.002 g/l

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A student dissolved 4 g of a substance in 100ml of water. What is the concentration of the solution in PPM

40 PPM

4 PPM

400 PPM

4000 PPM

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Molarity is measured in _____.

moles per g.

mols per L.

moles per mm.

moles per mL.

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Molar mass of NaOH is ______________________


Please use your periodic table from your books

40 grams/mol

50 grams/mol

45 grams/mol

38 grams/nol

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A Student picks up a 1 litre volumetric flask labeled 2M NaCl. How many grams of Sodium Chloride are present in this bottle.

(Na = 23, Cl = 35.5)

58.5 g

117 g

28 g

2000 PPM

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 

3
1
6
9

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?

(Na = 23, Cl = 35.5)

1.07 gram

62.7 mol

1.07 mol

62.7 grams

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