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
Answers: 1
Chemistry, 22.06.2019 11:40
Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?
Answers: 1
Chemistry, 22.06.2019 14:30
Calculate the mass of carbon in 97.0 g of sucrose c12h22o11
Answers: 3
Chemistry, 22.06.2019 20:30
Which of the following is not true about the atomic model of substances?
Answers: 1
If a 1.6 g sample of a sand/salt mixture is found to have 0.65 g of sand, what
is the percent sand...
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Arts, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
Mathematics, 16.09.2020 03:01
History, 16.09.2020 03:01
World Languages, 16.09.2020 03:01
Social Studies, 16.09.2020 03:01
Social Studies, 16.09.2020 03:01
Social Studies, 16.09.2020 03:01
Social Studies, 16.09.2020 03:01
Social Studies, 16.09.2020 03:01