When producing hydrogen iodide, the energy of the reactants is 581 kJ/mol, and the energy of the products is 590 kJ/mol. The equation is shown. H₂ + I₂ → 2HI

What is the total energy of the reaction? Is this an endothermic or exothermic reaction?

–9 kJ/mol, exothermic

9 kJ/mol, exothermic

9 kJ/mol, endothermic

–9 kJ/mol, endothermic

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?