Unit 3.6

Question 1

question asks to find volume at STP

Answer 1

use P1V1/T1=P2V2/T2
plug in 273.15 for temp and 1 for pressure

Question 2

if you use PV=nRT equation do you convert the 500cm^3

Answer 2

yes but if u use another equation u dont need to convert

Question 3

how to convert cm^3 or mL to L

Answer 3

move the decimal to the left three times

Question 4

which ones stronger covalent or molecular solids

Answer 4

covalent (diamonds, quartz)

Question 5

molarity formula

Answer 5

moles/L

Question 6

A student combines a solution of
with a solution of
and a precipitate forms.

Which of the following is evidence that ionic bonds formed during the precipitation?

Answer 6

The precipitate has a high melting point.

Question 7

A student combines a solution of NaCl(aq) with a solution of AgNO3(aq), and a precipitate forms.

Assume that 50.0mL of 1.0MNaCl(aq) and 50.0mL of 1.0MAgNO3(aq) were combined. According to the balanced equation, if 50.0mL of 2.0MNaCl(aq) and 50.0mL of 1.0MAgNO3(aq) were combined, the amount of precipitate formed would

Answer 7

not change, because the amount of AgNO3(aq) did not change