How many atoms are there in 8.91 g si?

In which of these cases are the two wave points considered to be in phase with each other?

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

What natural processes produce large quantities of co2