What number uniquely identifies an element

Why are white Americans less affected by toxic waste and air pollution than people of color? A. They tend to live in urban centers. B. They tend to vote in smaller numbers compared to other groups. C.

A cup of coffee is considered a ... A) Solute B) Solvent C) Precipitate D) Solution

Contains 63.65% nitrogen and 36.35% oxygen by mass what is the empirical formula for this compound

1. Construct Explanations How does the time at which you see things happen at a baseball game compare to the time when you hear things happen? Explain your answer.

A strong monoprotic acid ionizes in water. If the [H3O+] concentration is 1.56 x 10^-4 M, what else is true? pH = 10.19 The solution contains more hydronium ions than hydroxide ions. pOH = 1.

Watch It! #3 After watching the examples in the video of radiation, list 2 other examples that you come up with on your own.

Tear gas has the composition 40.25% carbon, 6.19% hydrogen, 8.94% oxygen, 44.62% bromine. what is the empirical formula of this compound?

Explain why ships traveling from east to west across the Atlantic take days longer than ships traveling the same distance from west to east.

In a titration 25.0 ml of a. 20 M NaOH solution is used to neutralize 10.0 ml of HCl. Write the equation for this neutralization reaction and calculate the molarity of the acid.

4*C: 4cm 8*C: 10cm 12*C: 14cm 16*C: 18cm 20*C:24cm 24*C: 12cm what is the independent variable, dependent variable and three constant variables?