Biology

Biology, 31.07.2019 22:30, bikkiecuanas13

Diamond and graphite are both polymorphs of

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Biology, 26.06.2019 18:00, shamiya15

Gary has a piece of diamond and a piece of graphite. he wants to test the hardness of these two minerals. when he rubs the diamond against the piece of graphite, the graphite gets scratched. when he rubs the piece of graphite against the diamond, the diamond does not get scratched. which of these is true? a. the graphite is harder than the diamond. b. this test does not show which mineral is harder. c. the diamond is harder than the graphite. d. both minerals have the same hardness.

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Chemistry, 03.09.2019 03:20, leannesmith90101

Both graphite and diamond burn. c(s, diamond ) + o2 ? co2 for the conversation of graphite to diamond c(s, graphite )? c(s, diamond) h298 = 190kj which produces more heat, the combustion of graphite for the combustion od daimond

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Chemistry, 01.10.2019 18:10, johnnyaby69

6. diamond and graphite are both composed of carbon atoms. the density of diamond is 3.52g/cm3. the density of graphite is 2.25g/cm3. in 1955, scientists successfully made diamond from graphite. using the relative densities imagine what happens at the atomic level when this change occurs. then suggest how this synthesis may have been accomplished.

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Chemistry, 05.11.2019 18:31, uh8hardiek

Both graphite and diamond burn. c(s,diamond)+o2(g)⟶co2(g) for the conversion of graphite to diamond: c(s,graphite)⟶c(s,diamond)δh°=1.90kj which produces more heat, the combustion of graphite or the combustion of a diamond?

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