How do carbon-12 and carbon-13 differ?
select all that apply.

they have different amounts of neutrons.
they have different amounts of electrons.
they have different mass numbers.
they have different atomic charges.

They have different amounts of neutrons.  They have different mass numbers.

the rearrangement of particles in a physical change. hope this

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2