A hydrogen balloon containing 0.250 moles of hydrogen gas explodes in the presence of oxygen such that all the hydrogen reacts. How much heat is released? H2(G) + (1/2)O2(G) —> H2O; H= 286 kJ/mol

Also try explaining the steps so I can learn at least a little but if you don’t want too it’s alright

Dsolubility let me know if you have any other questions for chemistry

Replicate prove reliability and validity

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

The answer is b electromagnetic i believe, i hope i ya out!