Chemistry, 18.10.2019 05:30 janeou17xn
Earth's atmosphere is composed mostly of nitrogen and oxygen. in order to float, a ballon has to be filled with something that is lighter than air. use the information on the periodic table too find out which elements might be suitable for making a ballon float. explain your choice or choices.
Answers: 3
Chemistry, 22.06.2019 16:50
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
Chemistry, 23.06.2019 01:30
Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.
Answers: 1
Chemistry, 23.06.2019 07:30
In the diagram here that represents the reaction, which reactant, a or b, is the limiting reagent?
Answers: 1
Earth's atmosphere is composed mostly of nitrogen and oxygen. in order to float, a ballon has to be...
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