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1. |
How many molecules are likely to be present in a cubic centimeter of volume if the pressure is 20 mm of Hg and the temperature is 27°C? |
A. | 6.4 x 1017 |
B. | 6.4 x 1023 |
C. | 4.8 x 1015 |
D. | 4.8 x 1021 |
Answer» B. 6.4 x 1023 | |