Table 15.2 in the textbook shows the top ten most abundant elements in the Sun, given by percentage. Based on the listed mass percentages and the Suns total mass (approx. 2 x 10 30 kg) calculate the total mass of hydrogen (in kg), total mass of helium (in kg) and total mass of iron (in kg). How do these three numbers compare? Why are heavier elements less abundant in the universe?.