Molenopoly Questions – Flashcards
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How many inches are there in 45.6 cm?
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18.0 inches
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How many centimeters are there in 1.23 x 10-6 kilometers?
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0.123 cm
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How many hours are there in 34.5 years?
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3.02 x 105 hours
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How many inches are there in 355 millimeters?
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14.0 inches
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How many miles are there in 3.44 x 108 inches?
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5.33 x 103 miles
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500 grams of sugar occupies a volume of 0.315 L. What is the density of the sugar in g/mL?
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1.587 g/mL
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The density of a substance is 1.63 g/mL. What is the mass of 0.25 L of the substance in grams?
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407.5 g
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The density of pure solid copper is 8.94 g/mL. What volume does 5 kg of copper occupy?
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559 mL
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What is the mass of a 450 cm³ block of silicon if the density of silicon is 2.336 g/cm³?
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1051.2 g
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What is the mass of a 15 cm cube of iron if the density of iron is 7.87 g/cm³?
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26561 g or 26.56 kg
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Which of the following is greater? a. 7.8 g/mL or 4.1 ?g/?L b. 3 x 10-2 kg/cm3 or 3 x 10-1 mg/cm3
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a. 7.8 g/mL b. 3 x 10-2 kg/cm3
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Two liquids, A and B, have densities 0.75 g/mL and 1.14 g/mL respectively. When both liquids are poured into a container, one liquid floats on top of the other. Which liquid is on top?
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Liquid A. (0.75 g/mL)
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How much space does 1 lb of butter occupy if the density of butter is 0.94 g/cm³?
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68 kg
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How many sig figs?: 230 cm
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2
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How many sig figs?34.0 mL
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3
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How many sig figs?0.625 g
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3
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How many sig figs?56.0030 g
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6
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How many sig figs?83400 km
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3
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How many sig figs?
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3
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How many sig figs?4200. mL
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4
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How many sig figs?0.000 620 m
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3
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How many sig figs? 0.0004g
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1
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55 oF =_____ oC
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12.8
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67 oF =_____ oC
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19.4
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40 oF =_____ oC
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4.4
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50 oF =_____ oC
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10
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100 oC =____ oF
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212
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32 oC =_____ oF
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89.6
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80 oC =_____ oF
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176
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64 oC =_____ oF
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147.2
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64 oF =_____ oC
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17.8
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66 oF = ______ oC
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18.9
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56 oC =______ oF
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132.8
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29 oF = oC
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-1.7
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What is the heat in Joules required to raise the temperature of 25 grams of water from 0 °C to 100 °C? What is the heat in calories? Useful information: specific heat of water = 4.18 J/g•°C
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10450 J or 2500 calories of heat energy are required to raise the temperature of 25 grams of water from 0 °C to 100 °C.
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What is the empirical formula for a compound which contains 0.0134 g of iron, 0.00769 g of sulfur and 0.0115 g of oxygen?
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FeSO3
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Find the empirical formula for a compound which contains 32.8% chromium and 67.2% chlorine.
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CrCl3
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What is the empirical formula for a compound which contains 80.34% zinc and the rest is oxygen?
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ZnO
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Barry Um has a sample of a compound which weighs 200 grams and contains only carbon, hydrogen, oxygen and nitrogen. By analysis, he finds that it contains 97.56 grams of carbon, 4.878 g of hydrogen, 52.03 g of oxygen and 45.53 g of nitrogen. Find its empirical formula.
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C5H3O2N2
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The characteristic odor of pineapple is due to ethyl butyrate, an organic compound which contains only carbon, hydrogen and oxygen. If a sample of ethyl butyrate is known to contain 0.62069 g of carbon, 0.103448 g of hydrogen and 0.275862 g of oxygen, what is the empirical formula for ethyl butyrate?
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C3H6O
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300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%. Find the empirical formula of the compound.
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C4H6O3
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200.00 grams of an organic compound is known to contain 83.884 grams of carbon, 10.486 grams of hydrogen, 18.640 grams of oxygen and the rest is nitrogen. What is the empirical formula of the compound?
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C18H27O3N16
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300 grams of an organic sample which contains only carbon, hydrogen and oxygen is analyzed and found to contain 145.946 grams of carbon, 24.3243 grams of hydrogen and the rest is oxygen. What is the empirical formula for the compound?
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C3H6O2
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A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. What is the molecular formula of this compound?
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C4O2H8
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A compound with an empirical formula of c4h4O and a molar mass of 136 grams per mole. What is the molecular formula of this compound?
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C8H8O2
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A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole. What is the molecular formula of this compound?
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C2F2Br2O2
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A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole. What is the molecular formula of this compound?
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C2H8N
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A well-known reagent in analytical chemistry, dimethylglyoxime, has the empirical formula c2h4no. If its molar mass is 116.1 g/mol, what is the molecular formula of the compound?
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C4H8N2O2
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An unknown compound was found to have a percent composition as follows: 47.0 % potassium, 14.5 % carbon, and 38.5 % oxygen. What is its empirical formula? If the true molar mass of the compound is 166.22 g/mol, what is its molecular formula?
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K2C2O4
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What's the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
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C3H3O mass = 55 g/mole
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If the molar mass of the compound in problem 1 is 110 grams/mole, what's the molecular formula?
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C6H6O2
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What's the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen?
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Li2CO3
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If the molar mass of the compound in problem 3 is 73.8 grams/mole, what's the molecular formula?
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Li2CO3
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What is the ground state? lithium
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1s22s1
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What is the ground state? oxygen
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1s22s22p4
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What is the ground state? calcium
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1s22s22p63s23p64s2
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What is the ground state? titanium
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1s22s22p63s23p64s23d2
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What is the ground state? rubidium
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1s22s22p63s23p64s23d104p65s1
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What is the ground state? lead
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1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2
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What is the ground state? erbium
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1s22s22p63s23p64s23d104p65s24d105p66s24f12
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What is the abbreviated ground state? helium
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1s2 (this one cannot be abbreviated)
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What is the abbreviated ground state? nitrogen
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[He] 2s22p3
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What is the abbreviated ground state? chlorine
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[Ne] 3s23p5
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What is the abbreviated ground state? iron
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[Ar] 4s23d6
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What is the abbreviated ground state? zinc
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[Ar] 4s23d10
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What is the abbreviated ground state? barium
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[Xe] 6s2
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What is the abbreviated ground state? polonium
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[Xe] 6s24f145d106p4
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What does the lewis structure look like? F2
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******F-F******
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What does the lewis structure look like? NH4 +
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{H-H-N-H-H}+
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What does the lewis structure look like?CN
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[**C- - -N**] -
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What does the lewis structure look like?CH3OH
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H-H-C-H-O****-H
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The air pressure for a certain tire is 109 kPa. What is this pressure in atmospheres? 1 atm = 760 mm Hg = 101325 Pa = 14.7 lb/in2 = 1.013 bar
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(Answer: 1.08 atm).
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The air pressure inside a submarine is 0.62 atm. What would be the height of a column of mercury balanced by this pressure? 1 atm = 760 mm Hg = 101325 Pa = 14.7 lb/in2 = 1.013 bar
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(Answer: 470 mm Hg).
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An experiment at Sandia National Labs in New Mexico is performed at 758.7 mm Hg. What is this pressure in atm? 1 atm = 760 mm Hg = 101325 Pa = 14.7 lb/in2 = 1.013 bar
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(Answer: 0.998 atm).
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The same bag of potato chips from problem 5 is shipped to Denver, Colorado, where the atmospheric pressure is 99.82 kPa. What is the difference (in Pa) between the pressure in the bag and the atmospheric pressure? 1 atm = 760 mm Hg = 101325 Pa = 14.7 lb/in2 = 1.013 bar
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(Answer: 1200 Pa).
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The pressure in the tire of an automobile is 34.8 lb/in2. What is the pressure in kPa? 1 atm = 760 mm Hg = 101325 Pa = 14.7 lb/in2 = 1.013 bar
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(Answer: 240 kPa).
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How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?
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11 moles of gas
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If 5.0 moles of O2 and 3.0 moles of N2 are placed in a 30.0 L tank at a temperature of 250 C, what will the pressure of the resulting mixture of gases be?
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6.5 atm
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A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.00 C.
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38.0 L
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A 35 L tank of oxygen is at 315 K with an internal pressure of 190 atmospheres. How many moles of gas does the tank contain?
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260 moles of gas
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If I initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm?
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1.29 L
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A toy balloon has an internal pressure of 1.05 atm and a volume of 5.0 L. If the temperature where the balloon is released is 200 C, what will happen to the volume when the balloon rises to an altitude where the pressure is 0.65 atm and the temperature is -150 C?
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7.11 L
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A small research submarine with a volume of 1.2 x 105 L has an internal pressure of 1.0 atm and an internal temperature of 150 C. If the submarine descends to a depth where the pressure is 150 atm and the temperature is 30 C, what will the volume of the gas inside be if the hull of the submarine breaks?
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767 L
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The principle that two fermions of a given type, such as electrons, protons, or neutrons, cannot occupy the same quantum state. It does not apply to bosons. This principle plays a key role in the electron orbital structure of atoms, since it prevents more than two electrons from occupying any given orbital (two are allowed, since they may have opposite spin, and thus be in different quantum states)
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What is Pauli Exclusion?
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every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
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What is Hund's rule?
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Electrons are placed in the lowest energetically available subshell. 2. An orbital can hold at most 2 electrons. 3. If two or more energetically equivalent orbitals are available (e.g., p, d etc.) then electrons should be spread out before they are paired up
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What is Aufbau?
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What makes up an H-Bond?
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Florine, Oxygen, Nitrogen, Hydrogen
