Lactase is a protein that speeds up the chemical reaction that breakdowns lactose sugar. Lactase is an example of: 1.) antibody
2.) carbohydrate
3.) DNA
4.) enzyme

What is the mass of phosphorous in a 51-kg person

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)]

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron