A platinan bar measure 5.0cm long, 40cm wide and 1.5 cm thick. if has a mass of 700.0grams.

Calculate the volume of platinum bar.

I need help :( Plz help me

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present