The closeness of a measurement to its actual value is a measure of its?
a. precision
b. accuracy.

What is the independent variable in this investigation? mass volume sample number substance density

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?

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2