In alpha decay, the parent nucleus loses an alpha particle, which is two protons and two neutrons. a. True
b. False

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?