You allow 4.78g of A and 10g of B to react to form C. Assuming you had a perfect reaction, how many grams of B would be leftover at the end of the reaction? A + 2B -> C

A = 202.0g/mole
B = 85.0 g/mole
C = 105 g/mole

If someone could send me the steps on how to solve this, that would be extremely helpful.

If a || b and e || f, what is the value of y ?

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

The first element on the periodic table of elements is carbon. a. true b. false