A helium-filled weather balloon has a volume of 811 L at 19.9°C and 752 mmHg. It is released and rises to an altitude of 4.25 km, where the pressure is 522 mmHg and the temperature is –7.1°C. The volume of the balloon at this altitude is L

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What elements have 2 electrons inthe 4s sublevel

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What three things determine the shape and size of a puddle when water is poured out onto a surface