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CHEM-111G-GENERAL CHEMISTRY I Actual Exam with Questions & CORRECT Verified ANSWERS |
CHEM-111G-GENERAL CHEMISTRY I Actual Exam with Questions & CORRECT Verified ANSWERS |
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CHEM-111G-GENERAL CHEMISTRY I Actual Examwith Questions & CORRECT Verified ANSWERS |
A propane molecule contains 3 atoms of carbon. The number 3 represents how many
significant figures? - ✔✔infinite
Identify the exact number.
1. 2
2. 2.0000
3. 2.0
4. 2.000
5. 2.00 - ✔✔1. 2
How many significant figures are in the measurement 5.3 g?
a. 2
b. 3
c. 1
d. 4
f. 5 - ✔✔a. 2
Round the following number to four significant figures and express the result in standard
exponential notation: 0.35462 - ✔✔3.546 × 10-1
How many square feet are in a room that measures 67.3 m2? - ✔✔724 ft2
Without using a calculator, solve the following problem.
[(1*10-5)*(1*10+2)]2/(1*10+3) - ✔✔1 × 10-9
,The recommended adult dose of Elixophyllin, a drug used to treat asthma, is 6.00 mg/kg of
body mass. Calculate the dose in milligrams for a 195-lb person. 1lb = 453.59g - ✔✔531
The width, length, and height of a large, custom-made shipping crate are 1.22 m, 3.22m and
0.54m respectively. The volume of the box using the correct number of significant figures is
________ m3. - ✔✔2.1
If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a
185-pound man? - ✔✔1.2 kg Ca
What wavelength of light would you report in units of nm, if the light had a wavelength of 8.80
× 10-10 m? - ✔✔0.880 nm
How many liters of wine can be held in a wine barrel whose capacity is 30.0 gal? 1 gal = 4 qt =
3.7854 L - ✔✔114
How many liters of air are in a room that measures 11.0 ft. * 12.0 ft and has an 8.00 ft ceiling? 1
in = 2.54 cm (exactly); 1L = 10+3 cm3 - ✔✔2.99 × 104
How many cm are in 24.2 ft? - ✔✔738 cm
How many km are in 602 feet? - ✔✔0.183 km
The mass of a proton is 1.67 × 10-27 kg. What is the mass of a proton in milligrams? -
✔✔1.67 × 10-21 mg
Pour chemical from large reagent bottles into ___________ before measuring. - ✔✔smaller
containers
, Read and __________ a chemical label before using the chemical. - ✔✔re-read
When diluting an acid, always add __________ to __________ . - ✔✔acid, water
Work with volatile chemicals ____________ . - ✔✔under a fume hood
Use __________ to draw liquid into a pipet. - ✔✔a bulb
When lighting a Bunsen burner, strike matches __________ . - ✔✔away from your body
While heating test tubes in a Bunsen burner, move test tubes ____________ . - ✔✔back and
forth at an angle
Hold hot glassware with ___________ . - ✔✔tongs
When inserting lubricated glass tubing into a stopper, protect your hands with ____________ . -
✔✔leather gloves
Always protect your eyes with ____________ when working in the laboratory. - ✔✔goggles
In the laboratory, stand on a __________ if your need to reach. - ✔✔step stool
In case of a spill accident, rinse chemical from your eyes ___________ . - ✔✔in an eyewash
fountain
You spill a bottle of acid onto your clothing. On the way to the safety shower, you __________.
- ✔✔remove all your clothing
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