A particular neutral uranium atom has 92 protons 143 neutrons and an atomic mass of 235 how many electron does the atom have

A Student Mixed two clear liquids together in a beaker. A Gas and a new liquid were formed. The gas escaped, so the student was unable to measure the mass. She guessed that its mass was more than 10.0 grams.

In the laboratory, a general chemistry student measured the pH of a 0.314 M aqueous solution of phenol (a weak acid), C6H5OH to be 5.269. Use the information she obtained to determine the Ka for this acid.

Classify these compounds by whether they behave as strong acids, weak acids, strong bases, or weak bases in aqueous solution. HI , H2CO3 , HF, LiOH , Ba (OH) 2 , CH3NH2 , NH4Cl , Na3PO4 , HNO3

An object is accelerating if there is a change in speed and which factor? a. time b. position c. direction d. displacement

Name a complex salt used for testing ammonium radical.

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?