Chemistry, 05.05.2020 01:38 johnisawesome999
The energy changes in two partial reactions are 225.3 kj and -432.0 kj. Using Hess's law, determine the combined energy change of these two partial reactions. Is the combined reaction endothermic or exothermic?
Answers: 2
Chemistry, 22.06.2019 00:00, annsmith66
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
Answers: 1
Chemistry, 22.06.2019 14:00, jivsf
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Chemistry, 22.06.2019 23:00, edgar504xx
What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?
Answers: 3
Chemistry, 23.06.2019 22:50, StitchBeach
Which of the following is the best explanation why some reactions appear to stop before all the reactants are converted to products? the reaction goes to completion. the reaction reaches equilibrium and the products stop being formed. the reversible reaction occurs at the same rate. the limiting reactant prevents the forward reaction occurring.
Answers: 1
The energy changes in two partial reactions are 225.3 kj and -432.0 kj. Using Hess's law, determine...
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