<u>Answer:</u> The temperature when the volume and pressure has changed is -27.26°C
<u>Explanation:</u>
To calculate the temperature when pressure and volume has changed, we use the equation given by combined gas law. The equation follows:
where,
are the initial pressure, volume and temperature of the gas
are the final pressure, volume and temperature of the gas
We are given:
![P_1=725mmHg\\V_1=12L\\T_1=30.00^oC=[30+273]K=303K\\P_2=252mmHg\\V_2=28L\\T_2=?K](https://tex.z-dn.net/?f=P_1%3D725mmHg%5C%5CV_1%3D12L%5C%5CT_1%3D30.00%5EoC%3D%5B30%2B273%5DK%3D303K%5C%5CP_2%3D252mmHg%5C%5CV_2%3D28L%5C%5CT_2%3D%3FK)
Putting values in above equation, we get:
Converting this into degree Celsius, we get:
Hence, the temperature when the volume and pressure has changed is -27.26°C
Conductors are required to transmit electricity to various parts of the home. These take the form of the copper in the wires. Insulators separate various electrical conduits from each other and external bodies, as well as protecting the conductors from the elements. These take the form of the plastic sheathing over the wires.
A is the answer. Chemical changes happen when atomic bonds are broken or created during chemical reactions. Hence, in this case, it involve changes to molecular structure.
- Change in states are physical changes.
- When salts are dissolved in water, you can use Distillation to separate them. Distillation is a physical change as well.
- Dissolving is just physical change.
Answer:
Amount of heat required = 153.62 J
Explanation:
Given:
Mass = 163.45 g
∆Hvap = 43.3 kJ/mol
Molar mass C₂H₅OH = 46.07 g/mol
Find:
Amount of heat required
Computation:
Amount of heat required = Number of moles x Molar mass C₂H₅OH
Amount of heat required = [163.45/46.07][43.3]
Amount of heat required = 153.62 J
Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body.
