How many grams of water are produced from 21 grams of B, H? BH2 + 30, ---> 2HBO2 + 2H,0
Hint** you are going from grams of x to grams of y. (H, O = 18 g/mol; B, H, = 24
g/mol)

where is the following

explanation:

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.