Consider a 4.31g sample of C4H10. How many atoms of C would be in this sample? atoms of C Show your work: Element R has three isotopes. The isotopes are present in 0.0825,0.2671, and 0.6504 relative abundance. If their masses are 92,107 , and 124 respectively, calculate the atomic mass of element R. (No decimals). C7H14 is an organic compound. Calculate its molar mass to 2 decimal spaces. g/mol Consider a 7.80g sample of C3H6. How many molecules are in this sample? molecules How many grams of C9H16 would you need to measure out to have 0.731 mol? g Show your work: Element A has two isotopes. The first isotope is present 12.84% of the time and has a mass of 220.23. The second isotope has a mass of 194.69. Calculate the atomic mass of element A. (To two decimals places) In lab you measure out 41.68 grams of C6H12O6 for an experiment. How many mol is this? Show your work