Argon has three main isotopes 0.336 % with a mass of 35.96 amu, 0.063 % at 37.9627 amu, and 99.60 % at 39.96238 amu Calculate the average atomic mass. What is your answer?

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Which states of matter have particles that move independently of one another with very little attraction?