A car travels 75 mi/hr. How many hours will it take to travel 837 km? (Pick the answer closest to the correct answer, 1.61 km=1 mile)

6.9 hours

Explanation:

In order to solve this problem we'll convert 837 km to miles (another option would be to convert 75 mi/hr to km/hr). To make said conversion we'll use the given conversion factor:

Finally we calculate the time required to travel said distance at a constant speed of 75 mi/hr:

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.