Chemistry, 10.10.2019 20:30, andersonemma2222
Carbon-14 has a half-life of 5,730 years. in how many years will 120 grams of carbon-14 decay to 15 grams?
11,460 years
17,190 years
22, 920 years
28,650 years
Answers: 3
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, 21.06.2019 23:10, ChloeLiz7111
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 14:00, asanchez4292
What type of matter is made of only one kind of atom
Answers: 2
Carbon-14 has a half-life of 5,730 years. in how many years will 120 grams of carbon-14 decay to 15...
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