Q10 A gas has a volume of 2.8 L at a temperature of 27 °C. What temperature (°C) needed to expand the volume to 15 L? (P and n are constant.)

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Apiece of copper has a temperature of 75.6 0c. when the metal is placed in 100.0 grams of water at 19.1 0c, the temperature rises by 5.5 0c. what is the mass of the metal?

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.