Math
What is the probability of choosing a King from a standard deck of 52 cards, answer in a fraction.
1/13
What is the formula of lead(II) nitrate?
A Pb3N2
B Pb2N3
C Pb2NO3
D Pb(NO3)2
E PbNO3
Pb(NO3)2
What structure controls the activities of a cell?
The nucleus!
This term refers to the rate of change of velocity per unit time.
acceleration
What will this print?
print("Hello, World!")
Choices:
A) "Hello World!"
B) Hello, World!
C) hello, world!
D) Error
B) Hello, World!
Find the volume of this shape. (Slides)
114.5 cm3
Which of the following has the most neutrons?
A 18F
B 18O
C 14C
D 15N
E 11B
Oxygen Neutrons = 18−8=10 , answer is B
Which of the following organisms is an example of a prokaryote?
A) Mushroom
B) Human
C) Bacteria
D) Fern
Bacteria
This is the property of an object that resists changes to its state of motion.
inertia
What will this output?
x = 5
y = 3
print(x + y)
8
The sum of the squares of four consecutive integers is 630. Find the integers.
-14,-13,-12,-11
OR
11,12,13,14
In which region of the periodic table would you find the elements of highest electronegativity?
A top, left
B top, right
C near the middle
D bottom, left
E bottom, right
B top, right
What type of macromolecule are enzymes?
a) Lipids
b) Proteins
c) Nucleic acids
d) Carbohydrates
Proteins
What is the equation that represents the work done when a force moves an object through a displacement?
W=Fd(cosθ) or without an angle: W = Fd
(where W is the work done, F is the force, d is the displacement, and cosθ is the angle between the force and the direction of displacement.)
What will be printed?
x = 10
if x > 5:
print("x is greater than 5")
else:
print("x is not greater than 5")
x is greater than 5
In a survey, 100 students were asked if they like lentils and were also asked if they like chickpeas. A total of 68 students like lentils. A total of 53 like chickpeas. A total of 6 like neither lentils nor chickpeas. How many of the 100 students like both lentils and chickpeas?
A) 32
B) 27
C) 26
D) 21
E) 15
B) 27
What intermolecular forces are present in CH3OCH3?
Dipole-dipole forces and London Dispersion forces
What structure allows the human heart to prevent the backflow of blood?
Heart valves
If a circuit has a resistance of 10 Ω and a current of 2 A flowing through it, what is the voltage across the circuit?
Answer: 20 V
Calculations: ● Use Ohm’s Law: V=IR ●
Where I = 2A and R = 10Ω
Thus: ○ V = 2 x 10 = 20V
What will this code output?
for (int i = 1; i <= 3; i++) {
if (i % 2 == 0) {
System.out.println(i + " is Even");
} else {
System.out.println(i + " is Odd");
}
1 is Odd, 2 is Even, 3 is Odd
(Slides)
20
A 10.0 L gas cylinder contains neon gas with a measured pressure of 65.0 kPa at 315 K. The 10.0 L cylinder is then connected to an empty cylinder of unknown volume, and the neon gas expands to fill both cylinders. If the final pressure is found to be 46.3 kPa at 315 K, then what is the volume of the second cylinder?
HINT: use PV=nRT
A 4.04 L
B 13.0 L
C 14.0 L
D 1.87 L
E 7.12 L
ANSWER: A) 4.04 L
V1=10 L
PV=nRT
n=PV/RT
*sub values into formula
n=248.1949 mol
V total= V1+V2
Pressure2Vtotal=nRT
(46.3)(V1+V2)=(248.1949)(8.314x10^-3)(315)
46.3(V1+V2)=650
V1+V2=14.04
10+V2=14.04
V2=14.04-10
V2=4.04 L
What anatomical structure allows for the exchange of gases between the blood and tissues?
A sound wave travels through a medium with a speed of 340 m/s. If the wavelength of the sound wave is 0.85 meters, what is the frequency of the sound?
Answer: 400 Hz
● Use the wave speed equation: ○ V = fλ ■ Rearrange to solve for frequency - f=v/λ
- where v = 340m/s (wave speed) and λ = 0.85
340/0.85 = 400Hz
String text = "Jeopardy";
for (int i = 0; i < text.length(); i++) {
if (text.charAt(i) == 'e') {
System.out.print("Y");
} else {
System.out.print("N");
}
}
NYNNNNNN