Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown. 2HBr - H2 + Br2 The energy of the reactant is 732 kJ/mol and the energy of the products is 630 kJ/mol. What is the total energy of the reaction? Is this reaction endothermic or exothermic?
(1 point)
A. -102 kJ/mol, endothermic
B. 102 kJ/mol, exothermic
C. 102 kJ/mol, endothermic
D. -102 kJ/mol, exothermic​

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?

The minute hand of a clock is 7cm long. calculate the displacement and distance covered by it from 8 am to 8.30 am pls answer fast i will surely mark as brainliest fast fast fast