Exam 1
Covert 202 K to F
-96.07 F
What are all the Strong Acids?
What is Enthalpy?
a measure of how much energy is in a system in a thermodynamic system
-(heat is a form of energy transfered between systems)
List the following elements in increasing (smallest to largest) atomic radius:
Li, Mg, Br, N, Ca, Cl
N, Cl, Br, Mg, Li, Ca
At what time and day is your final exam?
Tuesday at 7:00 am
Is Blood a pure substance, homogeneous mixture or heterogeneous mixture?
Heterogeneous Mixture
Write the balanced chemical equation.
C8H18+O2 --->CO2 +H2O
2C8H18+25O2 --->16CO2 +18H2O
What is the speed of a wave with a wavelength of 902 pm and a frequency of 5.81 x 10^7 Hz?
U= .0524 m/s
What element would have an electron with the following quantum numbers?
n=4, l=1, ml=1, ms=-1/2
Krypton 4p6
How long have I been a peer leader?
This is my first semester
1
The density of solution B is.512. The volume of the solution is 6.0 L. What is the mass?
3.1 g
What is the net ionic equation of
NaCl(aq)+ Pb(NO3)2 (aq) ---->?
You have 55L of water in a balloon and apply 35.5 torr of pressure. You then get another balloon and apply 5 atm of pressure. What is gonna be my volume for my balloon?
.514 L
Draw the correct lewis structure for Ethylene (C2H4)
Your wonderful Peer Leader will draw it :3
True or False
I love ALEKS it has great chemistry questions!
FALSEEEEEEEE
What is H2SO4?
Sulfuric Acid
Copper metal reacts with aqueous silver nitrate to produce silver metal and copper (II) nitrate. Identify what is being oxidized and reduced, then write the half reactions.
Reactants: [Cu=0 Ag=+1 N=+5 O=-2]
Products: [Cu=+2 Ag=0 N=+5 O=-2]
Oxidized: Cu0 --> Cu+2+2e-
Reduced: 2Ag+1+2e---> 2Ag0
A 70.0g chunk of metal at 180C was dropped in a bucket containing 400.g of H2O at 25C. The final temp of the mixture was 28C. What is the specific heat capacity of the metal? (Cs,H2O-4.18J/g*C)
.475 J/g C
Give the correct lewis structure, electronic geometry, molecular geometry, bond angle, and hybridization for CH2O
Trigonal Planar, trigonal planar, 120, sp2
What is Danisas pet, and its name?
Churro the Hamster
Calculate the number of atoms of Hydrogen in 72.36 grams of ammonium nitrite
2.721 x 10^24 atoms of H
Given 37.95 grams of octane reacting with 51.45 g of Oxygen gas, which of the reactants is the limiting regent and what is the greatest molar amount of water that can be made with this reaction?
1.158 mol of H2O
Find the Partial pressure of N2. 0.34mol N2 and 0.12 mol H2 are in the same container at a pressure of 2.34 atm
1.73 atm
x=n gas/n total
P gas =X gas (P total)
Draw the correct structure for Sulfur Hexafluoride
Your amazing peer leader will draw it :3
Write the names of everyone in the room.
Max, Ander, Ricardo, Joseph, Madi, Andrea, Carmen, Timothe, Camila, Itzel, Angel, Andres, Karime, Jesus, Andrew, Danisa