3. A helium gas container has a volume of 20.0 L. How many grams of helium are in the container if the gas has a pressure of 845 mmHg at 295.15 K? with solution and answer

Magnesium sulfate has a solubility of 38.9 g/ 100 g h2o at 40â°c. a solution is prepared by adding 9.50 g of mgso4 to 25.0 g of water at 40.0â°c. a homogeneous mixture is obtained. is the solution saturated, unsaturated, or supersaturated? one gram of magnesium sulfate is added to the solution cooled to 30â°c. would you expect some of the mgso4 to precipitate? if so, how much? if not, how much more mgso4 can be added before precipitation takes place?

When al is reacted with 7.76g of o2, how many grams of al2o3 can form?

What is the answer in the balanced equation?