Determine the molarity of a solution formed by dissolving 150 g of LiBr in enough water to yield 750.0 mL of solution. (molar mass LiBr = 86.845 g/mol). Please show your work.

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

Which element is the least metallic between cadmium, silver, zinc, or iron?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule