## What is the value of CP and CV for air?

The nominal values used for air at 300 K are CP = 1.00 kJ/kg. K, Cv = 0.718 kJ/kg. K,, and k = 1.4.

## How do you calculate joules to heat water?

Calculate specific heat as c = Q / (mΔT) . In our example, it will be equal to c = -63,000 J / (5 kg * -3 K) = 4,200 J/(kg·K) . This is the typical heat capacity of water.

## How do you calculate energy released in joules?

To calculate the amount of heat released in a chemical reaction, use the equation Q = mc ΔT, where Q is the heat energy transferred (in joules), m is the mass of the liquid being heated (in kilograms), c is the specific heat capacity of the liquid (joule per kilogram degrees Celsius), and ΔT is the change in …

## How do you calculate energy released in kJ mol?

Calculating energy changes= 100 × 4.2 × 20 = 8,400 J.It is also useful to remember that 1 kilojoule, 1 kJ, equals 1,000 J. Moles of propane burned = 0.5 ÷ 44 = 0.01136.So, the molar enthalpy change, ∆H = 8.4 ÷ 0.01136 = 739 kJ/mol.

## What is transferred when work is done?

Work is the measure of energy transfer when a force (F) moves an object through a distance (d). So when work is done, energy has been transferred from one energy store to another, and so: energy transferred = work done. Energy transferred and work done are both measured in joules (J).

## What is Ke formula?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

What is the value of CP and CV for air? The nominal values used for air at 300 K are CP = 1.00 kJ/kg. K, Cv = 0.718 kJ/kg. K,, and k = 1.4. How do you calculate joules to heat water? Calculate specific heat as c = Q / (mΔT) . In our example,…