Final answer:
The energy needed to heat up 250 grams of vegetable oil from 15 °C to 55 °C is 20,000 J (or 20 kJ).
Step-by-step explanation:
To find the energy needed to heat up 250 grams of vegetable oil from 15 °C up to 55 °C, we can use the formula:
q = m * c * ΔT
where:
- q is the heat energy,
- m is the mass of the object (in grams),
- c is the specific heat capacity of the substance (in J/g °C),
- ΔT is the change in temperature (final temperature - initial temperature) in °C.
For vegetable oil, the specific heat capacity is typically around 2.0 J/g °C. Substituting the given values into the formula, we get:
q = (250 g) * (2.0 J/g °C) * (55 °C - 15 °C)
q = 250 g * 2.0 J/g °C * 40 °C
q = 20,000 J
Therefore, the energy needed to heat up 250 grams of vegetable oil from 15 °C to 55 °C is 20,000 J (or 20 kJ).