Chemistry, 28.06.2019 09:00, Samuelgamboe
1.) which of the following is an example of using creativity while doing background research? a. organizing data in tables b. validating results by repetition c. drawing a conclusion d. writing a hypothesis 2.) the gas carbon dioxide is a pure substance. which of the following is true about carbon dioxide? a. carbon and oxygen are chemically bonded in it. b. carbon and oxygen retain their original identity in it. c. it can be separated into carbon and oxygen using physical methods. d. the proportion of carbon and oxygen is different in different samples of the gas. 3.) which of the following is a property of a mixture? a. it consists of a single element or compound. b. components that are mixed can be in different states of matter. c. it is very difficult to separate the components. d. the proportion of the particles that make it up cannot be altered.
Answers: 1
Chemistry, 22.06.2019 13:00, devontemiles8868
One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.
Answers: 1
Chemistry, 22.06.2019 15:20, shanyeah
Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma
Answers: 1
1.) which of the following is an example of using creativity while doing background research? a. or...
Chemistry, 24.07.2020 20:01