A solution of ammonia NH3(aq) is at equilibrium. How would the equilibrium change if OH were added to the solution?
A. (NH4+) and (OH) would decrease.
O B. (NH4+] would increase and (OH] would decrease.
O C. (NH4+) and (OH) would increase.
D. (NH4+) and (H+] would decrease.

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)