The average fuel economy for a gasoline powered car is about 45 miles per gallon. The average car in the U. S. is driven about 17000 per year. Calculate the number of gallons of gasoline that are combusted by the average car in the U. S. each year.

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon