What isotope of carbon is radioactive: A) Carbon-12
B) Carbon-13
C) Carbon-14
D) Carbon-13 and Carbon-14

Identify two types of chemical bonding in the source of dietary potassium

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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)]