Reina is making museum exhibits about two different rock types. How could energy have played a role in the different rock types forming

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?