Atoms
A bubble has a volume of 0.0054 cubic centimeters. What is this volume in cubic meters?
5.4 x 10–9 m3
Provide the chemical formula for nickel(II) phosphate.
Ni3(PO4)2
What is the net ionic equation when HBr and LiOH are combined?
DOUBLE JEOPARDY is answered correctly!
H+ + OH- --> H2O
DOUBLE JEOPARDY: What type of reaction was described previously?
If the reaction below typically takes place with 60.5% yield, how many moles of H2O would be produced if this reaction was carried out using 0.100 moles of Fe3O4 and 0.300 moles of H2?
Fe3O4(s) + 4 H2(g) --> 3 Fe(s) + 4 H2O(g)
DOUBLE JEOPARDY if answered correctly!
0.182 mol
DOUBLE JEOPARDY: How many moles of excess reactant are leftover?
Draw a valid Lewis structure for hydrogen peroxide (H2O2). Hold your drawing up to answer.
Dr. Eric approves :)
How many unpaired electrons does iron have?
DOUBLE JEOPARDY question if answered correctly!
4
DOUBLE JEOPARDY: What is the shape of the orbital that houses the unpaired electrons?
How many moles of potassium ions are in 3.00 kg of potassium carbonate?
43.4 moles of K+
Does a precipitate form when nickel(II) chloride and lithium carbonate react? If so, name the precipitate.
Yes, nickel(II) carbonate.
It takes 30.17 mL of 3.82 M Ba(OH)2 to completely react with a 15.00-mL sample of HCl. What is the concentration of HCl in the sample?
15.4 M
What is the formal change on carbon in carbon monoxide?
–1
Calculate the number of moles that are in 304.1 g of zinc.
4.649 moles
What is the mass percent of carbon in carbon tetrachloride?
7.8%
When the chemical equation B2O3(l) + H2O(l) → H3BO3(l) is balanced using the smallest, whole number coefficients, the sum of the coefficients is…
6
Calculate the final (equilibrium) temperature of a mixture made by pouring 9.0 g of cold water at 22.5 °C into 150.0 g of hot tea at 72.8 °C. No heat is lost to the surroundings and the specific heat capacities of water and tea are equal.
70.0 oC
Draw a valid Lewis structure for C2H4. Hold up your drawing to answer.
DOUBLE JEOPARDY if answered correctly!
Dr. Eric approves :)
DOUBLE JEOPARDY: Is the bond between the two carbons stronger or weaker than a single bond?
Rank these atoms from smallest (first) to largest (last):
chlorine, neon, boron, sodium
DOUBLE JEOPARDY question if answered correctly!
Ne < B < Cl < Na
DOUBLE JEOPARDY: Explain why atoms get smaller as we move across a period (left to right).
The ionization energies of McKenzium, a yet-to-be discovered element you saw on Exam 1, are provided below. How many valence electrons does McKenzium have?
IE1 = 700 kJ/mol
IE2 = 1900 kJ/mol
IE3 = 2300 kJ/mol
IE4 = 9010 kJ/mol
IE5 = 10117 kJ/mol
3
What is the oxidation state of manganese in potassium permangante?
+7
Nitroglycerin (molar mass = 227.1 amu) decomposes according to the reaction below:
4 C3H5N3O9(l) → 6 N2(g) + 12 CO2(g) + O2(g) + 10 H2O(g).
What is the total volume of all gases produced by the decomposition of 2.00 g of nitroglycerin at 33 oC and 0.968 atm?
1.66 L
What is the formal charge of chlorine in the best Lewis structure of ClO2–?
DOUBLE JEOPARDY question if answered correctly!
+1
DOUBLE JEOPARDY: Name this ion.
Provide the electron configuration for Co2+.
DOUBLE JEOPARDY question is answered correctly!
[Ar]3d7
DOUBLE JEOPARDY: Is Co2+ larger or smaller than Co?
Determine the molecular formula of a compound that is 48.6% C, 8.2% H, 43.2% O, and has a molar mass of 222 g/mol.
C9H18O6
How much water must be added to 57 mL of 0.100 M CaCl2 to produce a solution that is 0.030 M?
133 mL
When a student dissolves 13.5 g of AgNO3 and excess LiCl in water in an insulated cup so that the total mass of the solution is 302 g, the temperature of the solution rises from 23.0 °C to 30.7 °C. What is the value of ∆𝐻 (in kJ/mol) for the reaction between silver nitrate and lithium chloride? Assume the specific heat capacity of the solution is equal to the specific heat capacity of water.
–120 kJ/mol
Draw a valid Lewis structure for CH2O2. Hold your drawing up to answer.
Dr. Eric approves :)