Chemistry, 16.03.2020 17:58 yasdallasj
When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? Question 2 options: No, boiling water is a physical change. Yes, the formation of a gas is evidence of a chemical reaction. No, the formation of gas bubbles is a secondary chemical reaction which is ignored. Yes, the formation of a gas is proof a new compound has been made. none of the above
Answers: 2
Chemistry, 22.06.2019 05:50
What happens when the temperature of a solution increases?
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Based on its chemical properties, identify the position of each chemical family on the periodic table.
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Chemistry, 23.06.2019 00:00
Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3
Answers: 3
When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? Quest...
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