HURRY Show step-by-step
If 20-g of O2 is mixed with 2-g of H2 and the mixture is ignited, what is the mass of water that may be produced?

11.647g of water may be produced.

Explanation:

chemistry of the reaction:

2O2 + 2H2 > 2H2O + O2

64g + 4g yields 36g of water,

20g + 2g yields 11.647058824g of water

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.

increased stability in the completion of fluorine's outer shell.