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What is the partial pressure of radon if the total pressure is 780 torr and the water vapor partial pressure is 1.0 atm? I don't understand this math question? What's the difference between sea salt and regular salt? Determine the angle measure between vectors u and v: u = – 3i + 3j and v = 3i + 2j .? Power Supply: Internal 280MA Li-ion Battery
Power Consumption: 130MA/3.7V How long will the battery last on a device with these specs?