Physics, 06.05.2020 05:12 tabbycat2574
A cube 29.0 cm on a side contains 3.40 ✕ 1023 molecules of nitrogen gas at a pressure of 1.00 atm at a certain temperature. What is the rms speed of the nitrogen molecules? (The molar mass of N2 is 2.80 ✕ 10−2 kg/mol.)
Answers: 3
Physics, 22.06.2019 12:00, jazz8224
The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
Answers: 3
Physics, 23.06.2019 00:40, maggie2018
Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.
Answers: 1
A cube 29.0 cm on a side contains 3.40 ✕ 1023 molecules of nitrogen gas at a pressure of 1.00 atm at...
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