Chemistry, 17.02.2021 05:20 avalonr2003
How many moles are in 7.5 x 1019 molecules of ammonia, NH3?
Answers: 3
Chemistry, 21.06.2019 14:30
Order the following from smallest to largest atom, electron, quark, proton, neutron, molecule, nucleus
Answers: 1
Chemistry, 21.06.2019 17:10
Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.
Answers: 2
Chemistry, 21.06.2019 19:00
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
How many moles are in 7.5 x 1019 molecules of ammonia, NH3?...
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