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The same element is present before and after a
O chemical change
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During which time interval does the object travel approximately 10 meters
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Modern weaponry has increased the number of deaths in wars and violent conflicts.
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Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?
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