How must the hydrogen in an acid be attached (ionically or covalently) to be an acid?

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

Which formula equation represents the burning of sulfur to produce sulfur dioxide? s(s) + o2(g) 4502(9) 2h2s(s) + 302(g) —> 2h20(0) + 2502(9) 4fes2+1102 —> 2fe2o3 + 8502 2802(g) + o2(9) v205 , 2503(9)

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.