Chem 101 quiz 5

find the volume of a cylinder that has a diameter of 5.00 cm. and height of 8.00 cm.

157 cm^3

a nugget of gold with a mass of 521 g is added to 50.0 mL of water. the water level rises to a volume of 77.0 mL. what is the density of the gold?

19.3 g/mL

what is the volume of the liquid (mL) in this graduate cylinder

24.0 mL

record the length of the object shown below with correct number of sig figs

4.55

the diagram shows the apparatus for separating soil and water. what are the labeled parts?

A = residue; B = filtrate (stuff in flask)

liquid A, B, and C do not mix. Liquid A has a density of 0.895 g/mL, liquid B has a density of 0.650 g/mL and liquid C has a density of 1.23 g/mL. If they are poured in a graduate cylinder and allowed to settle, which liquid will be the bottom most layer?

Liquid C

the evidence of chemical reaction between Mg and HCl is formation of bubbles. The bubbles are due to

NONE OF THE ABOVE

in this set of chemical reactions, which is a single replacement reaction?

Zn(s) + CuCl2(aq) -> ZnCl2(aq) + Cu(s)

you will measure 24 mL of water. which of the following glassware will give you the most accurate result?

a 25 mL graduate cylinder

which of the following is NOT evidence of a chemical reaction

change of concentration

equal amount of Mg reacted with HCl and HC2H3O2 separately. which of the following statements is correct?

reaction with HCl took less time

if you add only 5 drops of 0.1 M HCl to a buffer solution of pH=7, its pH will ___________

remain 7

a precipitate is formed when _________-

two clear solutions are mixed

what is the density of a 20.00 mL sample of a liquid that weights 11.483 g? (don't forget sig. fig.) (density=mass/volume)

0.5742 g/mL