The balanced chemical equation for the combustion of butane is: 2c2h2 + 5o2 co2 + 2h2o 2ch4 + 5o2 2co2 + 4h2o 2c4h10 + 13o2 8co2 + 10h2o c4h10 + 12o2 4co2 + 5h2o

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

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?