Which of the following statements is FALSE?
a.
Some scientists suggest that proximity to petrochemical facilities indicates an increase in cancer rates.
b.
Almost 60% of the nation’s petrochemical industry is located in Texas.
c.
The U. S. government does not yet require petrochemical companies to report toxic emissions.
d.
Refining petrochemicals produces many toxic byproducts.

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.

What metric units would you use to measure the thickness of a key

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate