2-lf you have 600 kJ of heat to spend, and you use it to melt lead, how many % ounce wheel weights (at 200C) can you melt? Note that Lead is NOT measured in troy ounces, but proper ones (16 ounces in a pound), the specific heat of lead is 0.13 J/goC and its melting point is 327.5oC.

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2-lf you have 600 kJ of heat to spend, and you use it to melt lead, how many % ounce wheel weights (at
200C) can you melt? Note that Lead is NOT measured in troy ounces, but proper ones (16 ounces in a
pound), the specific heat of lead is 0.13 J/goC and its melting point is 327.5oC.
3-The written value of 1.0 µm means
a. 102 m b. 10-2 m c. 106 m d. 10-6 m e. 10-9 m
4-The written value of 1.0 um means
a. 102 m b. 10-2 m c. 106 m d. 10-6 m e. 10-9 m
5- Which element has 71 neutrons?
a) 222Rn b) 146 Nd c) 159Sm d) 140Ce e) 121Sn 3.9
6- Which of the following is NOT found in the nucleus?
a) in
b) He
c) }H
d) -fe
d) ge
7- There are two common ions for gold: Au(1) and Au(III). Which of these would be the Auric ion?
a. Au (1) b. Au (III) c) neither
8- Which one of the following is a Brønsted -Lowry acid?
A) (CH3)3NH+ B) CH3COOH C) HF D) HNO2 E) all of the above
9- How many moles of gas are there in a 50.0 L container at 22.0°C and 825 torr?
A) 2.29 x 104 B) 1.70 × 103 C) 2.23 D) 0.603 E) 18.4 5.2
10-The density of NO2 in a 3.50 L tank at 780.0 torr and 37.0°C is
8/L.
A) 1.64 B) 9.30 C) 1.86 D) 2.92 E) 3.27
Transcribed Image Text:2-lf you have 600 kJ of heat to spend, and you use it to melt lead, how many % ounce wheel weights (at 200C) can you melt? Note that Lead is NOT measured in troy ounces, but proper ones (16 ounces in a pound), the specific heat of lead is 0.13 J/goC and its melting point is 327.5oC. 3-The written value of 1.0 µm means a. 102 m b. 10-2 m c. 106 m d. 10-6 m e. 10-9 m 4-The written value of 1.0 um means a. 102 m b. 10-2 m c. 106 m d. 10-6 m e. 10-9 m 5- Which element has 71 neutrons? a) 222Rn b) 146 Nd c) 159Sm d) 140Ce e) 121Sn 3.9 6- Which of the following is NOT found in the nucleus? a) in b) He c) }H d) -fe d) ge 7- There are two common ions for gold: Au(1) and Au(III). Which of these would be the Auric ion? a. Au (1) b. Au (III) c) neither 8- Which one of the following is a Brønsted -Lowry acid? A) (CH3)3NH+ B) CH3COOH C) HF D) HNO2 E) all of the above 9- How many moles of gas are there in a 50.0 L container at 22.0°C and 825 torr? A) 2.29 x 104 B) 1.70 × 103 C) 2.23 D) 0.603 E) 18.4 5.2 10-The density of NO2 in a 3.50 L tank at 780.0 torr and 37.0°C is 8/L. A) 1.64 B) 9.30 C) 1.86 D) 2.92 E) 3.27
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