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03-11-2008, 07:13 PM
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| Can anyone help me with chemistry please?
1. A gas compressed in a cylinder. The distance between the gas molecules: a) increases b) decreases c) remains the same 2. A gas is compressed in a cylinder. Its mass a)increases b)decreases c) remains the same 3) A gas sample at 83 Celsius occupies a volume of 1400m*3. At what temperature will it occupy a volume of 1200m*3 4)A barometer shows the atmospherice pressure to be 762 mmHg. What is the partial perssure of nitrogen if nitrogen is 78% of the air? Thank you for helping. HELP i need a chemistry teacher.      |
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