Answers: 2
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
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Chemistry, 23.06.2019 14:00
If the molar mass of the compound is 96.69 g/mol, what is the molecular formula of the compound?
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Chemistry, 23.06.2019 21:40
Hydrochloric acid reacts with barium hydroxide according to the equation: 2 hcl (aq) + ba(oh)2 (aq) → bacl2 (aq) + 2 h2o (l) δh = -118 kj calculate the heat (in kj) associated with the complete reaction of 109 grams of hcl (aq).
Answers: 3
What is a formula relating pressure force and area...
Mathematics, 27.06.2020 15:01
Mathematics, 27.06.2020 15:01
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English, 27.06.2020 15:01
English, 27.06.2020 15:01
Mathematics, 27.06.2020 15:01
Mathematics, 27.06.2020 15:01