HELP PLEASE an unknown gas has a pressure of 121.6 kPa, a volume of 31 L and a Temperature of 256K. How many moles of gas
are there?

Y=‐1x + 7 if y has a value of ‐24 what is the value of x?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years