a gas that has the volume of 28 liters, a tempeture of 65 0C, and an unknown pressure has its volume increased to 36 liters and its temperature decreased to 35 0C. if I measure the pressure after the change to be 2.0atm, what was the original pressure of the gas

100mg magnesium reacts with 20ml of 1.0m hcl

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?