Question

A 20 ounce bottle of soda provides a total of 300. calories. how many kilojoules are in the soda

Answer 1

Answer: 1255.2 kJ

Explanation:.

Energy is the capacity to do work. It is expressed in units like calories, Joules and ergs.

These units of energy are inter convertible.

We are given:

Energy present in soda = 300 cal

Converting this unit of energy into kilojoules

`1 cal=4.184J`

Thus
`300cal=(4.184)/(1)* 300=1255.2kJ`

Thus, kilojoules present in soda is equal to 1255.2.

Answer 2

The ratio which denotes the relation between the two different units is said to conversion factors.

According to conversion factors, the relation between calorie and kilojoule is given as, one Calorie is equal to 4.184 kJ.

1 Cal = 4.184 kJ

Now, according to above relation, convert 300 calories into kilojoules.

300 calories =
`300 Cal* (4.184 kJ)/(1 Cal)`

=
`1255.2 kJ`

`\simeq 1255 kJ`

Thus, kilojoules present in soda is equal to
`1255 kJ`