Chemistry, 05.03.2021 07:20, adrian128383
A pressão ambiente o iodo tem pontos de fusão e de ebulição superiores a 100°C. Um estudante colocou iodo sólido em um frasco limpo, que foi hermeticamente fechado. Os frascos ficou em absoluto repouso a temperatura ambiente. Após algum tempo, notou-se a formação de cristais de iodo na tampa do frasco devido á:
A) pressão osmótica do iodo.
B) sublimação do iodo.
C) fusão do iodo.
D) decomposição do iodo.
E) alta reatividade química do iodo.
Answers: 1
Chemistry, 21.06.2019 21:00, advancedgamin8458
Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96
Answers: 2
Chemistry, 22.06.2019 07:30, isalih7256
Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .
Answers: 1
Chemistry, 22.06.2019 13:00, rome58
Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.
Answers: 1
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