Yeast and sugar were added to lukewarm water and place in a flask. A balloon was stretched over the opening of the flask. Small bubbles were observed rising along the side of the flask as the balloon slowly began to inflate. It can conclude that ...

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

The is a particle with one unit of positive charge a. proton b. positron c. electron d. nucleus awnser quick it is a important science test!

What layer of the atmosphere is directly above the troposphere?