A sample of helium was compressed at 35 °C from a volume of 0.50 L to 0.25 L where the pressure is 500.
mmHg. What was the original pressure?

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

If i add water to oil what will happen

What is the molar mass of ca(cio4)2