The trash cans distributed by the city of mobile are approximately 4 feet tall and have a square cross section with a side of approximately 30 inches. assuming that the trash can is rectangular, approximate its capacity: 4. a. in gallons b. in metric tons of water at 4°c

Explanation:

Length of trash cans = l = 4 feet

Breadth of trash cans =  b = 4 feet

Height of trash cans =  h = 30 inches = 2.5 feet

1 inches = 0.0833333 feet

Capacity of trash can = Volume of the rectangular trash can = V

V = l × b × h

a)

b) Density of water at 4°C = 1 kg /L

1 metric tonne of water = 264.17 gallons of water

metric tonne of water

 metric tonne of water

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

i believe the answer is a.