Question

1. A 250g chunk of metal is heated with 400 joules of energy and the temperature goes from 20 °C to 25°C. What is its specific heat ?
pls help me

Answer 1

The specific heat capacity of this chunk of metal is equal to 0.32 J/g°C.

Given the following data:

• Mass of metal = 250g

• Quantity of energy = 400 Joules

• Initial temperature = 20°C

• Final temperature = 20°C

To determine the specific heat capacity of this chunk of metal:

The formula for quantity of heat.

Mathematically, quantity of heat is given by the formula;

$Q = mc\theta$

Where:

• Q represents the quantity of heat.

• m represents the mass of an object.

• c represents the specific heat capacity.

• ∅ represents the change in temperature.

Making c the subject of formula, we have:

$c = \frac{Q}{m\theta}$

Substituting the given parameters into the formula, we have;

$c = \frac{400}{250 \times (25-20)}\\\\c = \frac{400}{250 \times 5}\\\\c = \frac{400}{1250 }$

Specific heat, c = 0.32 J/g°C.

Read more on specific heat here: brainly.com/question/2834175