A flask contains 0.450 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask.

Define atom. list the subatomic particles, describe their relative masses, charges, and positions in the atom.

Two people must have the same speed and velocity if A) they are walking toward each other at 2 m/s. B) they are walking away from each other at 2 m/s. C) they are jogging side by side at 5 m/s. D) they are jogging to two different destinations.

How many atoms are present in 3.42E23 molecules of Cu Cl?

Suppose you were given a substance and asked to determine weather or not it was a plasma. Write the characteristics you would look for to identify the substance.

Under laboratory conditions of 25.0 degrees C and 99.5 kPa, what is the maximum number of liters of ammonia that could be produced from 1.50 L of nitrogen according to the following equation? N2 (g) + 3H2 (g) - --> 2NH3 (g)

What does the water inside the jar represent

What is solubility? 1) solubility is how much solute will precipitate out of solvent 2) solubility is how much solvent will dissolve in solute 3) solubility is how much solid only will dissolve in liquid only

Is burning of coal a reversible change? If yes how?

How many grams of tin are found in 3.5 moles of tin

Determine whether each statement is a description of a physical property or a chemical property. Paper burns readily in air.