Chemistry, 13.02.2022 19:50 datboyjulio21

Use the reaction and bond information to answer the question. H2 + CO2 → CH2O2
Reactant bond energies: H–H is 432 kJ/mol, C=O is 799 kJ/mol
Product bond energies: C–H is 413 kJ/mol, C=O is 745 kJ/mol, C–O is 358 kJ/mol, O–H is 467 kJ/mol
Is this system endothermic or exothermic, and why?

It is exothermic because more energy is given off by the products versus the amount needed to break up the reactants.

It is endothermic because more energy is given off by the products versus the amount needed to break up the reactants.

It is exothermic because more energy is needed to break up the reactants versus the amount given off by the products.

It is endothermic because more energy is needed to break up the reactants versus the amount given off by the products.

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 01:00

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

Answers: 1

Answer

Chemistry, 22.06.2019 14:00

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

Answer

Chemistry, 22.06.2019 23:00

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Answers: 1

Answer

Chemistry, 23.06.2019 08:30

Which can be observed only in a microscopic view? a) structure of a muscle cell b) shape of a soybean plant c) foam insulation d) x-ray of a knee joint

Answers: 2

Answer

You know the right answer?

Use the reaction and bond information to answer the question. H2 + CO2 → CH2O2
Reactant bon...

Questions