Chemistry, 16.09.2019 07:30, misslux

Are there any crystals on the periodic table?

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Chemistry, 22.06.2019 10:30, ntrann22

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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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.

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Chemistry, 22.06.2019 13:30, ayoismeisalex

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

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Chemistry, 22.06.2019 20:00, edamite12

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.