Just one question!
all of the following measure mass except (2 points)
milligram
...
Chemistry, 20.09.2019 20:30 imstressed
Just one question!
all of the following measure mass except (2 points)
milligram
kilogram
decigram
centimeter
Answers: 1
Chemistry, 21.06.2019 18:30
Asample of the male sex hormone testosterone, c19h28o2, contains 3.88Γ10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?
Answers: 1
Chemistry, 21.06.2019 22:50
Achemical reaction (also known as a chemical change) produces substances that are chemically different from the starting materials. an example of a chemical reaction is the formation of water from hydrogen and oxygen gas.in a physical change, a substance changes its physical appearance but not its chemical identity. an example of physical change is the formation of liquid water from solid water, a familiar process called melting. physically, liquid water looks very different from solid water (ice) but the chemical identity, water, is the same for both. which of following changes that affect the composition of our atmosphere involve physical changes and which involve chemical reactions? oxygen gas changes to ozone during thunderstorms carbon dioxide is produced by the combustion of gasoline in an automobile engine. when coal, oil, and natural gas are decomposed in landsills they produce methane gas. freezing rain develops when a warm air mass overrides a cold air mass. fog forms from water vapor when the temperature drops below the dew point
Answers: 1
Chemistry, 22.06.2019 13:00
Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table
Answers: 3
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