How many liters of water are needed to make a 0.75 M KCl solution, starting with
44.5 grams of KCI?

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

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?

The student repeated the experiment using a higher concentration of acid. the same volume of acid and the same mass of magnesium ribbon were used. what volume of hydrogen gas would have been produced after 60 seconds?