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