One night, the power went out, so Jordan and his family lit candles. When Jordan went to bed, he checked the candles and noticed that the wax was liquid and running down the sides. When he woke up in the morning, the candles were not lit, and the wax was a solid layer around the bottom. Which statement best describes what happened to the wax? A. The liquid wax gained heat, causing it to condense into its solid form overnight. B. The liquid wax gained heat, causing it to freeze into its solid form overnight. C. The liquid wax lost heat, causing it to condense into its solid form overnight. D. The liquid wax lost heat, causing it to change phase into its solid form overnight.
Answers: 3
Chemistry, 21.06.2019 20:30
14. complete and balance the equations for the single displacement reactions. a. zn + pb(no3)2 -> b. al + niso4 -> 15. complete and balance the equations for the double displacement reactions. a. agno3(aq) + nacl(aq) -> b. mg(no3)2(aq) + koh(aq) -> 16. complete and balance the equations for the combustion reactions. a. __ ch4 + o2 -> b. __ c3h6 + o2 -> c. + o2 ->
Answers: 2
Chemistry, 22.06.2019 04:30
In which phase(s) do the molecules take the shape of the container?
Answers: 1
Chemistry, 22.06.2019 07:40
22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g
Answers: 1
Chemistry, 22.06.2019 13:00
6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.
Answers: 1
One night, the power went out, so Jordan and his family lit candles. When Jordan went to bed, he che...
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