A car travels at 60 miles per hour and gets 15 kilometers per liter of gasoline.

How many gallons of gasoline are needed for a 2.2-hour trip?

I'm confused on how to set-up conversion factors.

Conversion factors are set up so that units you don't want cancel and those you want stay. For example, convert 100 mg to g. You know 1000 mg = 1 g

So 100 mg x (1g/1000mg) = ?? NOte You know to place it as 1g/1000 mg and not 1000 mg/1g. As 1g/1000 mg, the mg unit cancels (the unit you don't want to keep) but the unit g stays (you want the answer in grams). If you did it the other way it would be 100 mg x (1000 mg/g) and the units would tell you the answer can't be right because the units are mg^2/g but you know that isn't right because you wanted grams.

How many milliliters of 0.135M potassium hydroxide are required to completely neutralize 14.0mL of 0.150M H2So4 ?

To solve this problem, we need to convert the given units to a common unit (either miles or kilometers and either hours or liters) so that we can compare them.

First, let's convert the 2.2-hour trip to miles. We know that the car travels at a speed of 60 miles per hour, so we can set up a conversion factor:
2.2 hours × 60 miles per hour

This will give us the trip distance in miles.

Next, let's convert the trip distance from miles to liters of gasoline used. We know that the car gets 15 kilometers per liter, so we can set up another conversion factor:
[2.2 hours × 60 miles per hour] × [15 kilometers per liter]

This will give us the amount of gasoline used in liters during the trip.

Finally, we need to convert the gasoline used in liters to gallons. Since 1 gallon is equivalent to approximately 3.785 liters, we can set up another conversion factor:
[2.2 hours × 60 miles per hour] × [15 kilometers per liter] × [1 gallon per 3.785 liters]

Multiplying all the conversion factors, we can cancel out the units and determine the number of gallons required for the trip.

Let me calculate the answer for you.