K12 What is the smallest particle representing oxygen A. diatomic oxygen

B. a proton

C. a compound

D. an atom

Gymnast always perform on padded mats. how does the mats protect the gymnast

Ill give u brainliest pls how is mass of carbon conserved during cellular respiration

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)]