Question 15 (1 point) Identify the Lewis base in the following reaction.
Co2+ (aq) + 4C1- (aq) = Coc12-(aq)
a) Co2+
b) CV-
c) Coci,2-
a
a
Ooo
b
b
c
с

1. baking powder is a 1: 1 molar mixture of cream of tartar (khc4h4o6) and baking soda (nahco3). a recipe calls for two teaspoons (a total of 8.0 grams) of cream of tartar. how much baking soda must be added for both materials to react completely?

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer