In the reaction H2S + NH3 NH4+ + HS–, the two Brönsted-Lowry bases are
A) NH3 and HS-
B) NH3 and NH4+
C) H2S and NH3
D) H2S and HS-

It has been two weeks since charles met with daniel, a dietitian, who provided charles with a menu for weight loss. charles and his mother are going back to see daniel again with a chart of the food charles has eaten. the following lists what charles ate in one day: breakfast 1 banana, 1 cup of nonfat milk, 1 egg lunch 1 cup of carrots, 3 oz of steak, 1 apple, 1 cup of nonfat milk dinner 6 oz of skinless chicken, 1 baked potato, 3 oz of broccoli, 1 cup of nonfat milk

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

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