Chemistry, 04.02.2020 02:00, issagirl05
Why does earth rotate?
1. because earth is formed from cold gases collapsing due to gravity
2.because the matter in the nebula that formed earth was spinning
3.because earth forms more than 99% of the mass of the solar system
4.because the hydrogen atoms inside the nebula fused to form helium
Answers: 2
Chemistry, 21.06.2019 19:00, RedDemon59
Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?
Answers: 2
Chemistry, 22.06.2019 08:30, audrey1256
Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree
Answers: 1
Chemistry, 23.06.2019 05:00, neidaq12345
110 g of water (specific heat = 4.184 j/g c) and 100 g of a metal sample (specific heat = 0.397 j/g c) are heated from 25 degrees c to 75 degrees c. which substance required more thermal energy?
Answers: 1
Why does earth rotate?
1. because earth is formed from cold gases collapsing due to gr...
1. because earth is formed from cold gases collapsing due to gr...
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