Chemistry, 23.07.2019 03:20 masonbartolo8184
Suppose total world energy consumption of fossil fuels, equal to 3×1017 kj/yr, were to be obtained entirely by combustion of petroleum with the approximate chemical formula c2h3. combustion of petroleum releases about 43×103 kj/kg. estimate the emissions of co2 in kg per year.
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Chemistry, 22.06.2019 15:30
The identities of substances are the same before and after which type of change
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Chemistry, 22.06.2019 20:10
Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)
Answers: 1
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 06:20
Type the correct answer in each box.balance the chemical equation.__ n203 ➡️ __ n2 +__ o2
Answers: 1
Suppose total world energy consumption of fossil fuels, equal to 3×1017 kj/yr, were to be obtained e...
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