Chemistry, 06.11.2019 21:31 fespinoza019
What is the half life of a radioisotope if 25.0 grams of anoriginal 200.-gram sample of the isotope remainsunchanged after 11.46 days? 3) 11.46 d1) 2.87 d4) 34.38 d2) 3.82 d
Answers: 3
Chemistry, 22.06.2019 07:30
Identify two types of chemical bonding in the source of dietary potassium
Answers: 3
Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)โถno(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is ฮดh = -100 kj/mol . what is the activation energy for the reverse reaction?
Answers: 3
Chemistry, 22.06.2019 23:00
The data below were determined for the reaction shown below. s2o82โ + 3i โ (aq) โ 2so42โ + i3โ expt. # [s2o82โ] (m) [i โ] (m) initial rate 1 0.038 0.060 1.4 ร 10 โ 5 m/s 2 0.076 0.060 2.8 ร 10 โ 5 m/s 3 0.076 0.030 1.4 ร 10 โ 5 m/s the rate law for this reaction must be:
Answers: 1
Chemistry, 23.06.2019 00:00
The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?
Answers: 1
What is the half life of a radioisotope if 25.0 grams of anoriginal 200.-gram sample of the isotope...
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