PLEASE HELP ASAP Calculate the pH of a mixture of 50.0 cm^3 of 0.100 mol dm^–3
aqueous ammonia and 50.0 cm^3 of 0.0500 mol dm^–3 hydrochloric acid solution. Kb = 1.78 x 10^-5.

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.