CHEM 162 EXPERIMENT 5 SPECTROCHEMICAL
SERIES ACTUAL TEST PAPER 2026 COMPLETE
QUESTIONS AND SOLUTIONS GRADED A+
◉ Pb. Answer: lead
◉ copper. Answer: Cu
◉ palladium. Answer: Pd
◉ Ir. Answer: Iridium
◉ Ba. Answer: barium
◉ The following data were obtained for the density of some
unknown solid (just like the experiment you carried out in lab).
Determine the density of the solid. - initial volume of water 31.0 mL
- volume of water with unknown 65.2 mL
- mass of solid unknown 163.331 g. Answer: V = 34.2 mL
D = 4.78 g/mL
,◉ The following data were obtained for the density of some
unknown liquid (just like the experiment you carried out in lab).
Determine the density of the liquid. - mass of empty graduated
cylinder + cork 21.111 g
- mass of cylinder + cork + liquid 25.652 g
- volume of liquid 4.15 mL. Answer: m = 4.541 g
d = 1.09 g/mL
◉ CaCl2 is used as a de-icer on roads in the winter. It has a density of
2.15 g/mL. What is the mass of 295 mL of this substance?. Answer:
634 g
◉ Suppose that you split some of the solid unknown after you
obtained the mass and before adding it to the graduated cylinder.
You proceeded as if nothing happened. How would this specifically
affect the experimentally determined density of the solid unknown..
Answer: by having less mass than recorded the volume will not be as
high and therefore the density will increase
◉ Salt concentation 7.2 % and 25.5%. Answer: = 1.058 g / m L
= 1.236 g/mL
◉ What is the correct formula for sulfur dioxide?
Select one:
, a.S2O2
b.SO2
c.S2O
d.SiO2. Answer: B
◉ What is the correct formula for sodium iodide?
Select one:
a.NaI2
b.Na2I
c.NaI
d.N2I2. Answer: C
◉ What is the correct formula for ammonia?
Select one:
a.NH3+1
b.NH3
c.NH4+1
d.NH2-1. Answer: B
◉ The correct name of H2SO4 is
Select one:
a.sulfurous acid
SERIES ACTUAL TEST PAPER 2026 COMPLETE
QUESTIONS AND SOLUTIONS GRADED A+
◉ Pb. Answer: lead
◉ copper. Answer: Cu
◉ palladium. Answer: Pd
◉ Ir. Answer: Iridium
◉ Ba. Answer: barium
◉ The following data were obtained for the density of some
unknown solid (just like the experiment you carried out in lab).
Determine the density of the solid. - initial volume of water 31.0 mL
- volume of water with unknown 65.2 mL
- mass of solid unknown 163.331 g. Answer: V = 34.2 mL
D = 4.78 g/mL
,◉ The following data were obtained for the density of some
unknown liquid (just like the experiment you carried out in lab).
Determine the density of the liquid. - mass of empty graduated
cylinder + cork 21.111 g
- mass of cylinder + cork + liquid 25.652 g
- volume of liquid 4.15 mL. Answer: m = 4.541 g
d = 1.09 g/mL
◉ CaCl2 is used as a de-icer on roads in the winter. It has a density of
2.15 g/mL. What is the mass of 295 mL of this substance?. Answer:
634 g
◉ Suppose that you split some of the solid unknown after you
obtained the mass and before adding it to the graduated cylinder.
You proceeded as if nothing happened. How would this specifically
affect the experimentally determined density of the solid unknown..
Answer: by having less mass than recorded the volume will not be as
high and therefore the density will increase
◉ Salt concentation 7.2 % and 25.5%. Answer: = 1.058 g / m L
= 1.236 g/mL
◉ What is the correct formula for sulfur dioxide?
Select one:
, a.S2O2
b.SO2
c.S2O
d.SiO2. Answer: B
◉ What is the correct formula for sodium iodide?
Select one:
a.NaI2
b.Na2I
c.NaI
d.N2I2. Answer: C
◉ What is the correct formula for ammonia?
Select one:
a.NH3+1
b.NH3
c.NH4+1
d.NH2-1. Answer: B
◉ The correct name of H2SO4 is
Select one:
a.sulfurous acid
