Which statement is true? A. sound waves and light waves travel at the same speed
B. sound waves and light waves do not travel
C. sound waves travel faster than light waves
D. sound waves travel slower than light waves

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.