In order for a substance to change from a liquid to a gas,

heat must be taken away

heat must be added

heat could be either added or taken away

heat must be kept constant

Which one of the quantum numbers does not result from the solution of the schrodinger equation?

Alice added sodium chloride to water and stirred the water for several minutes. Alice is most likely trying to demonstrate that ionic compounds are hard. can dissolve. are clear. can melt.

Phthalic acid is a diprotic acid having the formula HO2CC6H4CO2H that can be converted to a salt by reaction with base.

Noble gases will not bond with other atoms because of this reason?

1. Calculate the heat change associated with cooling a 350.0 g aluminum bar from 70.0 degrees C to 25.0 degrees C. The specific heat capacity of aluminum is 0.9.

What is 450 g of flour a measure of? A) Weight B) Inertia C) Gravity D) Mass

List the four (4) ways you can tell that a chemical reaction has occurred.

A student has 2.99 g of Potassium Permaganate. How many mL of a. 532 M solution can the student make? How does one solve this?

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.