Standard_Solution_Lab_Makeup_Quiz

Standard_Solution_Lab_Makeup_Quiz

20 Qs

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Standard_Solution_Lab_Makeup_Quiz

Standard_Solution_Lab_Makeup_Quiz

Assessment

Quiz

others

Practice Problem

Hard

Created by

Ian Britton

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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a standard solution?

A solution with unknown concentration
A solution made only of water
A solution with a known, precise concentration
Any solution made in a lab

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which piece of equipment is best for preparing a precise volume of solution?

Beaker
Volumetric flask
Erlenmeyer flask
Graduated cylinder

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for molarity?

M = V / n
M = mass / volume
M = n / V
M = mol × L

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

To make a 0.500 M solution of NaCl in 1.00 L of water, how many moles of NaCl are needed?

0.050 mol
0.500 mol
5.00 mol
50.0 mol

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams of NaCl are in 1.00 mol? (Molar mass ≈ 58.5 g/mol)

29.3 g
58.5 g
100.0 g
1.00 g

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you overfill a volumetric flask?

The solution becomes more concentrated
The molarity increases
The solution becomes too dilute
It doesn't matter

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you do after adding the solute to a volumetric flask?

Fill it to the top with water immediately
Stir with a glass rod
Add water to the calibration line and mix
Heat the solution

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