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100
The difference between a chemical property and a physical property. Give an example of each.
What is a chemical property the atoms or molecules react and the composition of matter changes. ex). oxidation Physical property the atoms or molecules in the matter do not change. ex) melting point
100
If my products are carbon dioxide and water vapor what type of reaction did I have?
What is combustion
100
Define Keq
What is equilibrium constant
100
a. Tetracarbon nonachloride b. V2Se3
What is a. C4Cl9 b. Vanadium (III) Selenide
100
Smallest atomic radius. a. O b. N c. S d. P E. They are all the same, or it can't be determined
What is a. O
200
What is the strongest type of intermolecular forces that sulfur dioxide has? a. dispersion b. dipole-dipole c. hydrogen bonding d. ion-ion e. Sulfur dioxide doesn’t have any IMF’s
What is b. dipole-dipole
200
A 25 ml solution of 0.5 M NaOH is titrated until neutralized into a 50 ml sample of HCl. What was the concentration of the HCl?
What is M acid(50 ml)= (0.5 M)(25 ml) M acid = 12.5 MmL/50 ml M acid = 0.25 M
200
Conjugate acid of HPO4^-2
What is H2PO4^-
200
Under which conditions would a gas be the most soluble in a liquid? a. high temperature and low pressure b. high temperature and high pressure c. low temperature and low pressure d. low temperature and high pressure e. Pressure does not affect the solubility of a gas in a liquid
What is d. low temperature and high pressure
200
If K>1 which reaction is favored: reactants or products
What is forward reaction and products are favored
300
Which of following compounds has the highest boiling point? a. NH3 b. PH3 c. H2 d. Cl2
What is NH3
300
Consider the following chemical equation for the synthesis of water. 2H2 + O2 → 2H2O ΔH= -571.6kJ If 100.0 grams of hydrogen gas are mixed with 100.0 grams of oxygen gas and the maximum possible amount of water is formed, how much energy (in kJ) will be released?
What is 6.25 moles H2O x -571.6kJ/ 2 moles H2O = 1786kJ
300
Consider the following reaction at equilibrium. CO(g) + Cl2(g) ←→ COCl2(g) Predict the effect of: Adding Cl2 to the reaction mixture
What is a shift to the right
300
Calculate the mass % of oxygen in carbon dioxide.
What is 32/44.01 x100 = 72.71%
300
Differing number of neutrons are Differing number of electrons are
What are isotopes and ions?
400
Which type of electromagnetic radiation has the longest wavelength.
What is radio waves.
400
How many grams of calcium chloride can be produced if the reaction below starts with 5.34g of hydrochloric acid and 3.42g of calcium hydroxide? If 2.54 g of calcium chloride are formed, what is the percent yield of this reaction? (Write the balanced equation!)
What is 2HCl + Ca(OH)2 → 2H2O + CaCl2 HCl: 8.13g CaCl2 Ca(OH)2: 5.12g CaCl2 2.42/5.12 = 47.3%
400
What intermolecular forces are in H3CNH12?
What is dispersion, dipole-dipole, and hydrogen bonding?
400
a. Write the electron configuration for vanadium. b. Write the electron configuration for a V+2 ion.
What is a. [Ar] 4s23d3 b. [Ar]3d3
400
Type of reaction: C(s) + Cu2O(s) --> 2Cu(s) + CO(g)
What is gas evolution, re-dox, displacement
500
3 ways that water is a unique molecule and why
What is high surface tension, high boiling point, solid is less dense than the liquid all because of strong IMF's
500
Difference between empirical formula and molecular formula
What is empirical is the reduced version and molecular is how it appears in nature
500
Fill in the missing values in the table: pH pOH [H+] [OH-] Acidic or basic? 3.1 4. 8 3.4 x 10-6
What is Fill in the missing values in the table: pH pOH [H+] [OH-] Acidic or basic? 3.1 10.9 7.94 x 10-4 1.26x10-11 Acidic 9.2 4. 8 6.3 x 10-10 1.6 x 10-5 Basic 5.5 8.5 3.4 x 10-6 2.9x 10-9 Acidic
500
Draw the lewis dot structure for CF4 and CH2O. Determine if it is polar or nonpolar and what the molecular geometry is.
What is --O -F H-C-H F-C-F Trigonal planar, -F polar Tetrahedral, nonpolar
500
Not true about CH4: 1. it is a covalent molecule 2. Has a tetrahedral molecular geometry 3. Its non polar 4. Its electronic geometry is different than its molecular geometry
What is 4