420 mL of a gas at 25.0°C is compressed to 210 mL. What is the temperature of the gas after compression?
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Embryos of different species look very similar, which shows that the organisms share a ancestor.

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass