WorksheetsFinal Exam Review
Total questions: 25
Worksheet time: 2hrs 39mins
__Mg + ___O2--> __MgO
2,1,2
1,2,1
2,1,1
2,2,1
____ Na +____ I2 → ____ NaI
1,2,1
2,1,2
2,2,1
1,1,2
All chemical equations must be balanced. This means that the same number of atoms of each of the elements must be found in both the reactants and the products of the reaction. Which scientific law does this illustrate?
law of superposition
law of conservation of energy
law of conservation of mass
law of reflection
____ KClO3 → ____ KCl + ____ O2
3,3,2
2,3,2
2,2,3
3,1,2
Identify the following type of reaction
____ N2+__H2→ __NH3
synthesis
decomposition
single replacement
double replacement
What is the coefficient of Na(Sodium) in the following equation?
2Na+1Cl→1NaCl
1
2
3
4
Which of the following gas laws is calculated with the pressure and volume variables at a constant temperature?
Charle's Law
Boyle's Law
Guy Lussac's Law
Dalton's Law
What is STP of pressure?
500 atm
1 atm
1K
273K
Atmospheric pressure is measured with a —
pH meter
conductivity meter
thermometer
barometer
Air in a container has a mixture of gases, the total pressure in the container is 100atm. If there are three gases in the container, the first is 50atm, the second is 30atm, what is the pressure of the third gas?
40 atm
10 atm
20 atm
60 atm
A sample of a gas in a rigid container at 303K and 2L has its temperature increased to 313K. What will be the new volume?
10 L
2.07 L
6.06 L
15 L
A container has a volume of 50L and 5 moles, when gas is released the volume goes down to 40L, what are the new moles?
15 mol
20 mol
4 mol
6 mol
According to Avogadro's Law, volume and moles are ________________.
direct
indirect
What volume of 0.125 M KMnO4 is required to yield 0.180 mol of potassium permanganate, KMnO4
L=(mol/M)
5 mol
5 L
1.44 L
1.44 mol
What is the molarity of a solution that contains 0.400 mol HCl in 9.79 L solution?
M=(mol/L)
10 M
0.0008 M
5M
0.04 M
How many moles of HCl are dissolved in 50L, and has a molarity of 3M?
5 mol
150 mol
50 mol
.05 mol
A solution contains 60g 0f KCl at 80 C is called _______________-.
saturated
unsaturated
supersaturated
A solution contains 30g of NaCl at 10 C is called _______________-.
saturated
unsaturated
supersaturated
A solution contains 64g of KNO3 at 40 C is called _____________.
saturated
unsaturated
supersaturated
What is the solubility of KClO3 at 30C? _________
70g
50g
10g
0g
What is the solubility of CaCl2 at 20 C?
50g
60g
75g
90g
When preparing a solution, the substance that is to be dissolved is called –
solute
solvent
Based on the solubility chart, NaCl is ______________.
soluble
insoluble
What is the pH range?
0-12
0-14
1-14
1-12
What is the pH range for an acid?
less than 7
greater than 7
7
