How many moles of cu in 7.81 * 10^21 atoms of cu

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

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?