Which statements are true about all waves? It’s caused by a disturbance.
It requires a medium to travel.
It carries energy.
It carries matter.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Rays from the sun are not considered matter true or false

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]