Calculate the enthalpy change when 2 l of liquid nh3 is burned in air to give n2(g) and h2o(g). express your answer using two significant figures.

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Omg imgonnafailnfiedkla use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %