What is the charge of an Pb atom with 81 electrons?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood