Complete the following chart using your class notes. Use the virtual simulator. Hot Pack/Cold Pack Simulator. Compound

Beginning Temp.

End Temp.

Change in Temp. (End temp. - Beg. Temp.)

(If the temp. decreased, be sure to put a negative sign (-) in front of the number. If the temp. increased, be sure to put a positive sign (+) in front of the number.)

Sodium Chloride

21° C

° C

° C

Lithium Chloride

21° C

° C

° C

Sodium Hydroxide

21° C

° C

° C

Potassium Chloride

21° C

° C

° C

Find the number of moles of argon in 364g of argon.

The same side of the moon always faces earth because the

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.