Use the equation below to answer the following questions: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O

A) How many moles of O2, are needed to react with 25.9g of C4H10?

B) If 22.2 g of CO2 is produced, what mass of water is also produced?

C) How many moles of oxygen gas are needed to produce 0.30 moles of carbon dioxide?

What does standard deviation reveal about data? a. the average of all the data points b. which of the data points is most reliable c. how spread out the data points are d. the percent error included in the data

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.