<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
Answer:
The water at 38 °C has faster-moving molecules than the sample at 295 K.
Explanation:
Converting the temperature, 295 K from Kelvin to Celsius:
295 - 273 = 22°C
⇒The boiling point of water is 100°C and its melting point 0°C
⇒When we compare water at those 2 different temperatures ( 22°C and 38°C) we can say that water is in liquid form at both these temperatures as both of them are quite below the boiling temperature and above the melting temperature.
⇒The difference in temperature between water at the 2 given temperatures = 38°C - 22°C = 16°C
Water at 38°C is at a higher temperature and so is warmer than water at a lower temperature of 22°C.
At the atomic scale, the kinetic energy of atoms and molecules is sometimes referred to as heat energy. Kinetic energy is also related to the concept of temperature. Temperature is defined as the measure of the average speed of atoms and molecules. The higher the temperature, the faster these particles of matter move.
A salt would be left over. For example, if you reacted NaOH with HCl, your products would be NaCl, a salt, and water.
Answer:
c
Explanation:
because u need the energy to be able to work
4.2 × 10²² atoms Al × (1 mol Al / 6.022 × 10²³) = moles Al
Last one: fraction 1 mole Al over 6.022 × 10²³ atoms Al
