Electrons found in the outer most shell are referred to as?
Valence Electrons
True or False: Elements are composed of different kinds of atoms chemically bound together.
False.
What volume (mL) of isopropyl alcohol would you use if you needed 30.0 g? The density of isopropyl alcohol is 0.7855 g/mL at 20 °C?
D = (m/v)
38.192 mL
How many significant figures does 1.0001 have?
5
What is 8.04 x 10-5 as a number?
0.0000804
How many liters (L) is 312 milliliters (mL)?
0.312 L
A doctor tells the nurse to give a patient in the pediatric ward 160 mg of Tylenol for pain as needed every 6 hours. The pharmacy dispenses Tylenol at 80 mg/mL. How many mL will the nurse give the child per dose? (IGNORE significant figures)
2 mL
A 150 gram gold nugget contains 2.5 grams of gold. What is the percentage of gold in the nugget?
1.6%
Standard state temperature in science is 68 °F, what is that in Kelvin?
293
A glass of red wine has 128 Calories (kcal), how many kilojoules (kJ) is this (1 kcal = 4.184 kJ)?
535.552 kJ
The CDC believes the vinyl chloride is the cause of angiosarcoma in factory workers. Which part of the scientific method does this statement describe?
Hypothesis
At what temperature in ∘C will the balloon have a volume of 24.0 L?
Between 18 and 22
Another word for all substances that make up our world is?
Matter
How many significant figures does 0.0012860 have?
5
Which is larger?
6.2 x 10-3
6.2 x 10-4
6.2 x 10-5
6.2 x 10-6
6.2 x 10-7
6.2 x 10-3
How many grams (g) are in 58 milligrams (mg)?
0.058 g
Dr. Howerton orders a 250 mg Cipro oral suspension to treat her patient's UTI. You need to administer the drug every 12 hours for 3 days. If Cipro comes as 5 g/100 mL, how many teaspoons (tsp) will you administer per dose? (1 mL = 0.2 tsp)
1 tsp
Dr. Churchill has 54 textbooks in her office. Twelve of these are chemistry textbooks. What is the percentage of books that are not chemistry?
77.8%
A patient with sepsis will have a temperature greater than 101 ∘F, a heart rate higher than 90 beats per minute, and a breathing rate higher than 20 breaths per minute. What is the temperature in ∘C?
38.333
Dr. Hellman drives 1,846.1 miles to get from Nevada State College to the University of Notre Dame, how many gallons did he use if his car gets 27 miles/gallon?
68.374
Water vapor will go directly to a solid when it contacts a cold surface. This process is termed?
Deposition
Which temperature scale is used to measure absolute 0?
Kelvin
Iodine (I) has an atomic number of 53 and an atomic mass of 127. How many protons [protons], electrons [electrons], and neutrons [neutrons] does iodine (I) have?
53 protons, 53 electrons, 74 neutrons
Round 445,927 to two significant figures.
450,000
How would you express 948,038 to two significant figures using scientific notation?
9.5 x 105
How many micrograms (g, mcg) are in 0.5 milligrams (mg)?
500 g, mcg
A dose of 240 mg of acetaminophen is prescribed for a 20 kg child. How many mL of Children’s Tylenol (80. mg of acetaminophen per 2.5 mL) are needed? (IGNORE significant figures)
7.5 mL
Carlos is calculating the percentage that the overall homework grade is worth. If he has 15 homework assignments worth 10 points each and the total points in the class are 1420 points. What percent of his final grade will be from the total homework assignments?
10.6%
The average background temperature of the universe is 3 K. What is that in ∘F?
-454
A CT technician must inject 68 mL of contrast. If she is to inject the contrast at a rate of 7 mL/min, how many minutes will it take to inject all 68 mL of contrast?
9.714 min
What is the total number of Calories (kcal) in a Snickers bar if it has 11 grams (g) of fat, 3 g protein, and 28 g carbohydrates? (IGNORE significant figures)
223 Kcal
The further electrons are from the nucleus of an element, the ionization energy ___________.
decreases
The measure of how strongly an object resists being moved when its pushed is termed?
Mass
What is the correct way to display the following answer in proper significant figures?
85.006 + 0.1 + 12.0001 =
97.1
Express 0.000430948 to three significant figures using scientific notation.
4.31 x 10-4
How many kilometers (km) are in 290 meters (m)?
0.290 km
A 180 lb patient requires an injection of 0.022 g of Demerol which is available at 30. mg/mL solution. How many milliliters of solution should be administered? (1 kg = 2.205 lbs)
0.7333
Zoe got a 220 on her first Intro Chemistry exam; then a 235, 242, and 245 on her next three exams. If each exam was worth 250 points, what is her final grade based on these four exam grades?
94.2%
Carbon dioxide goes directly to a solid at 194.7 K, what is this is degrees Celsius (∘C)?
-78.3
A child is 54.6 cm long at birth. How long is this in inches if 1 inch is equal to 2.54 cm?
21.496
When electricity flows through a flask of salt water, bubbles will form in the water. This bubbles, when collected, will burn. This is an example of which?
Chemical change, Chemical Property, Physical Change, Physical Property
Chemical change
What are the three states of matter?
Below is the electron arrangement of which element?
Oxygen
What is the correct way to display the following answer in proper significant figures?
65,800 x 0.25 = ?
16,000
Write 2700.0 in scientific notation with appropriate significant figures?
2.7000 x 103
How many centimeters (cm) are in 4,260,000 micrometers (m)?
426 cm
Dr. Singh writes an order for 3 mg/kg of Ibuprofen to be taken orally every 6 hours for Melisa's child, Zoe. She weighs 73 lbs. The pharmacy dispenses you Ibuprofen at 50 mg/2 mL. How many mL will you administer to Zoe per dose for her pain? (1 kg = 2.205 lb)
3.9727 mL
A bag of gumdrops contains 16 orange gumdrops, 8 yellow gumdrops, and 16 black gumdrops. What percentage of gumdrops are black gumdrops?
40%
Liquid nitrogen is a cryopreservative that has many scientific and medical uses. The temperature of liquid nitrogen is around -320.8 ∘F, what is that in Celsius?
-196
A normal value for blood cholesterol is 180 mg/dL of blood. If a normal adult has a total blood volume of 5 L, how much total cholesterol is present in grams?
9 grams