2al + 6hcl ? 2alcl3 + 3h2 if the chemical reaction produces 129 grams of alcl3, how many grams of h2 are also produced?

Stage in which a typical star has completely stopped fusion

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has: