H2po4– + h2o --> h3o+ + hpo4²–
which of the following is a base–conjugate acid pair?
a)h2o and h3o+
b)h2o and h2po4–
c)h2po4– and hpo42–
d)h2po4– and h3o+

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?

Which compound contain an iron with a 3+ charge