The heat exchange in chemical reactions is due to a change in:

-kinetic energy

-enthalpy

-temperature

-physical properties

An investigation involves determining which metal is better for making pots that will cook food faster. Which is the best hypothesis to use for this investigation?

If element X has 23 protons, how many electrons does it have?

What is the momentum of a 3kg bowling ball moving at 3m/s?

A soccer ball rolls 12.6 meters in 4.5 seconds what's the average speed

determine the smallest mass of lead that when tied using a string to a wooden boat on a pond will be enough to sink the toy boat. assuming specific gravity of wood is 0.5 and density of water is 1000kg per cubic metre?

justin pushes basket of toys with 50N of force for 3 meters in 100 seconds. how much work did he do on the basket

In general, what can be said about metals.

If the moon did not have an atmosphere what would happen to it

Density is calculated by: dividing volume by mass dividing mass by volume multiplying mass and volume multiplying mass and gravity

The Burj Khalifa in Dubai is the tallest building in the world at about 828 m. A daredevil climbs to the top of the building and sees the the Boulevard Plaza 2 (141 m tall) about 300 m away.