92.22% of all the isotopes of an element have a mass of 27.87 amu, 4.69% have a mass of 29.06 amu, and 3.09% have a mass of 30.09 amu. What is the average mass of this element?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

What is the equilibrium constant of aa+bb=cc+dd

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide