Chemistry Question! 20 Points! Nuclear decay is more likely to occur when:

- the mass number is greater than 83.

- the atomic number is greater than 83.

- the sum of the number of electrons + the atomic number is greater than 83.

- the sum of the mass number + the number of electrons is greater than 83.

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

What produces wave a)sound b) heats c)transfer of energy d)vibrations