CHEM 1111 Lab Final Exam Questions With
Answers 100% Verified
When would you use a fume hood? - ANSWER When there are poisonous or noxious
fumes
When is it OK to work alone in the lab? - ANSWER Never
What is the name of the system for communicating hazard information about chemicals?
- ANSWER Global Harmonized System (GHS)
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Blue - ANSWER Health hazard
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Red - ANSWER fire hazard
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Yellow - ANSWER reactivity
Match the color with the type of hazard it represents on the hazard labels on chemicals.
White - ANSWER specific hazard
,Who should you report accidents to? (Pick all that apply) - ANSWER The instructor
One of the TA's
How many pictograms are in the Global Harmonized System? - ANSWER 9
How many pictograms are in the Global Harmonized System? - ANSWER Fire
extinguisher
eyewash station
safety shower
When are you allowed to go without safety glasses/goggles in the lab? - ANSWER never
Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one
side equal to 55.0 mm? - ANSWER 1.3 x 103 g
Of the following, which is the smallest mass? - ANSWER 2.5 x 109 fg
How many significant figures are in the measurement 5.34 g? - ANSWER 3
What is the SI unit for mass? - ANSWER kilogram
, The correct answer (reported to the proper number of significant figures) to the
following multiplication is, 12.75 × 1.3621 = - ANSWER 17.37
The density of a 167.4 g sample of magnesium having a volume of 96.32 ml is __________
g/cm3. - ANSWER 1.738
Two students measured volume of the given liquid sample four times. Their results are
tabulated below. The exact volume of the liquid is 11.5 mL, whose measurement is more
accurate? - ANSWER Student A measurement is more accurate than Student B.
The density of silver is 10.5 g/cm3. A piece of silver with a mass of 125 g would occupy a
volume of __________ cm3. - ANSWER 11.9
The correct answer (reported to the proper number of significant figures) to the
following is (12.67 + 19.2)(3.99) / (1.36 + 11.366) = _____ - ANSWER 9.99
How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? -
ANSWER 98.4
Choose the correct name and charges of the cation and anion of compound
CaO__________ - ANSWER Calcium oxide, Ca2+, O2-
What is cobalt (II) hydrogen carbonate__________? - ANSWER Co(HCO3)2
Answers 100% Verified
When would you use a fume hood? - ANSWER When there are poisonous or noxious
fumes
When is it OK to work alone in the lab? - ANSWER Never
What is the name of the system for communicating hazard information about chemicals?
- ANSWER Global Harmonized System (GHS)
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Blue - ANSWER Health hazard
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Red - ANSWER fire hazard
Match the color with the type of hazard it represents on the hazard labels on chemicals.
Yellow - ANSWER reactivity
Match the color with the type of hazard it represents on the hazard labels on chemicals.
White - ANSWER specific hazard
,Who should you report accidents to? (Pick all that apply) - ANSWER The instructor
One of the TA's
How many pictograms are in the Global Harmonized System? - ANSWER 9
How many pictograms are in the Global Harmonized System? - ANSWER Fire
extinguisher
eyewash station
safety shower
When are you allowed to go without safety glasses/goggles in the lab? - ANSWER never
Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one
side equal to 55.0 mm? - ANSWER 1.3 x 103 g
Of the following, which is the smallest mass? - ANSWER 2.5 x 109 fg
How many significant figures are in the measurement 5.34 g? - ANSWER 3
What is the SI unit for mass? - ANSWER kilogram
, The correct answer (reported to the proper number of significant figures) to the
following multiplication is, 12.75 × 1.3621 = - ANSWER 17.37
The density of a 167.4 g sample of magnesium having a volume of 96.32 ml is __________
g/cm3. - ANSWER 1.738
Two students measured volume of the given liquid sample four times. Their results are
tabulated below. The exact volume of the liquid is 11.5 mL, whose measurement is more
accurate? - ANSWER Student A measurement is more accurate than Student B.
The density of silver is 10.5 g/cm3. A piece of silver with a mass of 125 g would occupy a
volume of __________ cm3. - ANSWER 11.9
The correct answer (reported to the proper number of significant figures) to the
following is (12.67 + 19.2)(3.99) / (1.36 + 11.366) = _____ - ANSWER 9.99
How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal? -
ANSWER 98.4
Choose the correct name and charges of the cation and anion of compound
CaO__________ - ANSWER Calcium oxide, Ca2+, O2-
What is cobalt (II) hydrogen carbonate__________? - ANSWER Co(HCO3)2
