Which of the following substances will form a base when dissolved in water? Question 14 options:

A)

HCl

B)

HBr

C)

KOH

D)

SO2

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

The p sub shell can hold up to 8 electrons in an atom. true or false?

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.