Carbon has an average atomic mass of 12.011 amu. Carbon-12 has a mass of 12.000 amu and Carbon-13 has a mass of 13.003 amu. Calculate the relative abundances of each isotope.

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring