
NCFE Review 2C
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
Standards-aligned
Stephen Jeffcoat
Used 3+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A water sample was found to have a pH of 6 at 25°C. What is the hydroxide concentration in the water sample?
1x10-8 M
6x10-8 M
1x10-6 M
6x10-6 M
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the pH of a solution of KOH with a hydroxide concentration of [OH] = 1x10-4 M
-10
-4
4
10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a titration experiment, if 30.0 mL of an HCl solution reacts with 24.6 mL of a 0.50-M NaOH solution, what is the concentration of the HCl solution?
0.41 M
0.61 M
1.5 M
370 M
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consider this reaction:
3Ca (s) + 2H3PO4 (aq) → Ca3(PO4)2 (s) + 3H2 (g)
How many moles of calcium are required to produce 60.0 g of calcium phosphate?
0.145 mole
0.194 mole
0.387 mole
0.581 mole
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the equation 2H2O (l) → 2H2 (g) + O2 (g), what mass of H2O is required to yield 22.4 L of O2 at STP?
12 g
18 g
24 g
36 g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metallic sodium reacts violently with water to form hydrogen and sodium hydroxide according to the balanced equation:
2Na + 2H2O → 2NaOH + H2
How many moles of hydrogen gas are generated when 4.0 moles of sodium react with excess water?
1.0 mol
2.0 moles
3.0 moles
4.0 moles
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molarity of a solution containing 20.0 g of sodium hydroxide dissolved in 1.00 L of solution?
0.500 M
0.400 M
0.300 M
0.200 M
Tags
NGSS.HS-PS1-5
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