MULTIPLE CHOICE QUESTION
Which constant would be the easiest to
use for this problem?
EX: A steel container holds 30.2L of nitrogen
gas at a pressure of 204atm at 31°C. How
many moles of nitrogen are in the container?
0821 L atm/Kx mol
62.4 L x mmHg / K x mol

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

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt