Which best explains why nuclear reactions release more energy than chemical reactions?

the forces holding the nucleus together are much stronger than the forces binding electrons to atoms.
protons have a much higher mass and energy than either neutrons or electrons.
during a chemical reaction, some of the mass of the reactants is converted to energy.
in nuclear reactions, all neutrons are converted to energy.

Asample of gas occupies 17 ml at –112°c. what volume does the sample occupy at 70°c a. 10.6 ml b. 27 ml c. 36 ml d. 8.0 ml you

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

How many neutrons does an element have if its atomic number is 50 and its mass number is 166