What dertermines if a chemical reaction releases heat

Which of the following is not a function of proteins? A) provide structural components B) stores the genetic information of a living organism C) movement of muscles D) catalyze reactions in the cells E) transport substances through the bloodstream

An express train passes through a station. It enters with an initial velocity of 22.2 m/s and decelerates at a rate of 0.142 m/s2 as it goes through. The station is 206 m long. How long is the nose of train in the station?

How many additional electrons does this atom of oxygen need in its valence shell to satisfy the octet rule?

What happens to shapes that break the rules

Calculate the average speed of an automobile that travels 60km east and then 80km north in two hours

What was the total weight (lbf) of chocolate in the vat? the specific gravity of chocolate is approximately 1.24?

You are in the lab and are given two rods set up so that the top rod is directly above the bottom one. The two straight rods 50-cm long are separated by a distance of 1.5-mm each with 15 A of current passing through them.

What is the explanation for feather beds being warm

A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 47 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 354 J?

Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8 m/s2, which gives the illusion of normal gravity during the flight.