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Chemistry, 22.06.2019 15:00, kandi2565
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 ?
Answers: 2
Chemistry, 22.06.2019 15:50, Edwardwall
Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?
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Chemistry, 22.06.2019 16:00, sassy11111515
The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
Answers: 1
How many moles are in 130 grams of calcium carbonate, CaCO3? A. 1.3 mol B. 2.5 mol C. 0.15 mol D. 1....
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