7.5 grams of sodium is heated on a hot plate. If the temperature of the sodium increases from 22.0 °C to 35.0 °C, how much heat does the sodium absorb?

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.

What type of matter is made of only one kind of atom

Which of the following molecules is polar? c3h7oh c2h5cooh