The temperature of a fixed mass of gas in a rigid container is decreased from 150.00 degrees Celsius to 39.0 degrees Celsius. The initial pressure was 12 atm What is the new pressure after cooling?​

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

How do you lengthen a pattern piece? (family and consumer science, sewing)

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.