The specific heat of a substance is 0.990j/g. what is the value in kcal/mg?

Conversion factors are defined as the ratio that shows the relationship between two units.

Here, the specific heat  = 0.990 J/g

Joule is the unit of energy and g is the unit of mass.

1 Joule = 0.000239006 kilocalorie and 1 g = 1000 mg

Now, 1 J/g is equal to

Therefore, 0.990 J/g is equal to () kcal/mg

= kcal/mg

Hence, 0.0990 J/g is equal to kcal/mg