Timothy is planning to leave home to go on a long trip. His mother told him to take his cell phone in case of an emergency. What is one way that cell phone technology may not be beneficial in this situation?

How many valence electrons are in the highest occupied energy leve of an atom

How many times greater is the rate of effusion of molecular fluorine than that of molecular bromine at the same temperature and pressure?

Look up the atomic number. Lead-210

At what temperature will 55 g of Pb (NO3) 2 dissolve?

If I initially have 4.0 L of a gas at a pressure of 1.1 atm and a temperature of 298 K, what will the volume be if I increase the pressure to 2584 torr and the temperature to 37˚C?

When molten rock undergoes crystallization above ground, what type of rock results? a. intrusive igneous rock b. extrusive igneous rock c. metamorphic rock d. sedimentary rock

A 150ml sample of hydrochloric acid completely reacted with 60.0mL of a 0.100 M NaOH solution. What was the original concentration of the HCl solution

Rearrange in to a quadratic 5.333 = (0.6 + 2p) ² / (0.135 - p)

How hot would a 2.3 L balloon have to get to expand to a volume of 3.0 L? Assume the initial temperature of the balloon is 24 °C, and that the pressure inside the balloon remains constant. A. 3 K B. 42 K C. 128 K D. 390 K

Which pair of nitrogen bases will form a bond in a DNA molecule? a. cytosine and adenine b. adenine and thymine c. guanine and thymine d. thymine and cytosine