A student needs to run 3.2 km to get to school. If the student can run 5.5
mi/hr , how many hours will it take them to get to school?

Hope this helps.

Explanation:

Convert from miles to kilometers (rounded to 2 decimals):

5.5 mi/h * 1.609 = 8.86 km/h

The student arrives at school in:

8.86 km 1 h

3.2 km x  

x = 3.2 * 1 / 8.86  

x = 0.3611 hours

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

the answer would be c