Chemistry, 09.07.2019 22:30 saurav76

Student mixes 5 g of sand into a beaker of 20 g of water. is this a physical or chemical change-why?

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Chemistry, 21.06.2019 23:50, stephaniero6

2points why do scientists need governmental funding? o a. government politicians ask all the important scientific questions. o b. scientists have to pay taxes to the government on the money they make. o c. the cost of doing scientific research can be very high. o d. the government is controlled by scientists. submit

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Chemistry, 23.06.2019 01:00, davelopez979

An unsaturated hydrocarbon is a hydrogen-carbon compound with a. a network solid structure b. single bonds c. single bonds in a branched-chain structure d. double or triple bonds

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Chemistry, 24.06.2019 03:00, UnnKoown

In the reaction 2mg (s) +o2 (g) + 2h2o (1)= 2mg2+ (aq) +4oh- (aq), which substance is reduced? a. mg b. o c. h2o d. oh e. none of the above (this is not a redox reaction)

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Chemistry, 24.06.2019 03:30, rhiannonwheatcr6619

1. the mitochondria has been described as the engine of the cell. why is this a fitting nickname? how is this organelle involved in the process of cellular respiration? 2. explain how one of the processes discussed in this module (photosynthesis, cellular respiration or the carbon cycle) apply to both the law of conservation of matter and law of conservation of energy. 3. identify one source of carbon that can found in each of these four spheres: atmosphere (air), geosphere (land), biosphere (living organisms) and hydrosphere (water).