Which is an example of an element?

a. salt (nacl)

b. water (h20)

c. silver (ag)

d. electron (e-) hint?

What would be the number of oxygen atoms in 5.00 moles of co2?

Identify each of the following as a representative element or a transition element: A) Lithium B) Platinum C) Promethium D) Carbon

Be sure to answer all parts. Calculate the pH during the titration of 30.00 mL of 0.1000 M KOH with 0.1000 M HBr solution after the following additions of acid: (a) 9.00 mL pH = 12.73 (b) 29.80 mL pH = 1 (c) 38.00 mL pH = 1.9

How many, and what color, photons are released when a single electron is fired at a single neon atom

This graph shows the titration of 25.0 ml of methylamine solution with 0.0982 m hcl. Determine the molarity of the methylamine solution.

A base can neutralize an acid. true or false

Hydrochloric acid (12.0 ml of 0.233 m) is added to 296.0 ml of 0.0579 m ba (oh) 2 solution. what is the concentration of the excess h + or oh - ions left in this solution?

Which are the organs of the digestive system

For the separation of the unknown mixture, you are instructed to isolate the amine followed by the acid and finally the neutral. Does the order matter? If not, what other orders could be followed?

As ice melts and changes from solid to liquid, A) entropy increases. B) kinetic energy decreases. C) an exothermic reaction occurs. D) the random movement of molecules remains constant.