The emission of a Beta particle has the effect of: decreasing mass by one unit
increasing mass by one unit
no change in mass
adding a proton to the nucleus

(NOT MULTIPLE CHOICE, SINGLE ANSWER)

Which sample at stp has the same number of atoms as 18 liters of ne at stp

Which best describes eras and periods?

Sandy is building a small toy car. he wants to use a balloon to power the toy car. he fills a balloon with air and then attaches a straw to the balloon. he tapes the balloon-straw combination to the car and then releases the end of the balloon. the toy moves forward as the air from the balloon comes out the back of the straw. what can sandy do to make the toy car move faster? a) use less air in the balloon. b) blow up the balloon more. c) use a longer straw. d) use larger tires.