# How many moles of carbon are in 48 grams of carbon w) 4 x) 3 y) 2 z) 1

How many moles of carbon are in 48 grams of carbon w) 4 x) 3 y) 2 z) 1

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Description : Normality is defined as the number of: w) moles of solute per 1000 grams of solvent x) equivalent weights of solute per liter of solution y) kilograms of solute per liter of solution z) moles of solute per 1000 grams of solution

Last Answer : ANSWER: X -- EQUIVALENT WEIGHTS OF SOLUTE PER LITER OF SOLUTION

Description : Moles of solute divided by kilograms of solvent is expression for: w) molarity x) solute-to-solution ratio y) mole percentage z) molality

Description : What is the molarity of a salt solution prepared b dissolving three moles of salt in 500 milliliters of water? w) 1 x) 2 y) 4 z) 6

Description : One equivalent of a triprotic acid is the same as: w) one mole of the acid x) one-third mole of the acid y) three moles of the acid z) three equivalents of a diprotic acid

Description : 2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity? w) 5 molar x) 2 molar y) 2.5 molar z) 12.5 molar

Description : Which of the following concentration expressions is defined as the number of moles of solute per kilogram of solvent: w) molarity x) molality y) normality z) equivalents

Description : How many calories are required to raise the temperature of 20 grams of water from 40 degrees to 60 degrees? w) 40 cal x) 400 cal y) 20 cal z) 200 cal

Description : Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States

Last Answer : ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS

Description : The density of lead is 12 grams per cm3. A lead brick has a mass of 1.5 kilograms. Its dimensions are 10 cm by 5 cm by 4 cm. Is it: w) More than 75% hollow x) Between 50 and 75% hollow y) Between 25 and 50% hollow z) Between 0 and 25% hollow

Description : Ten calories of heat are added to 2 grams of water. The temperature of the water rises to a total of how many degrees? Is it: w) 2 degrees Celsius x) 5 degrees Celsius y) 10 degrees Celsius z) 20 degrees Celsius

Description : Two point masses, M1 and M2, are 14 centimeters apart. M1 has a mass of 2 grams. M2 has a mass of 5 grams. Locate the center-of-mass of this system. w) 4 cm from M1 x) 4 cm from M2 y) 5 cm from M2 z) 7 cm from M1

Description : If you start with 24 grams of a radioactive element with a half-life of one month, how many grams of the radioactive element will be left after 2 months? w) 1.5 grams x) 3 grams y) 6 grams z) 12 grams

Description : The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.625 grams y) 1.25 grams z) 2.50 grams

Description : The earth's average density is: w) 2.82 grams per cubic centimeter x) 4.75 grams per cubic centimeter y) 5.52 grams per cubic centimeter z) 10.5 grams per cubic centimeter

Description : What is the relative humidity when the absolute humidity is 3 grams per cubic meter and the air has a capacity of 12 grams per cubic meter? w) 4% x) 9% y) 25% z) 400%

Description : If you started with 100 grams of each of the materials below and they all vaporized inside of an inflatable balloon, which of them would produce the largest volume balloon, assuming they were all at the same temperature? w) water x) gasoline y) ethanol z) butane

Description : What is the molecular mass of a gas that effuses through a small hole at twice the rate as oxygen gas at the same temperature. (The molecular mass of O2 is 32.) w) 8.0 atomic mass units x) 16 atomic mass units y) 48 atomic mass units z) 64 atomic mass units

Description : What is the molality of a salt solution prepared by dissolving two moles of salt in 500 grams of water?

Description : How many carbon atoms are there in one naphthalene molecule? w) 6 x) 8 y) 10 z) 15

Description : Which of the following gases is more soluble in water as the water temperature increases? w) Helium x) Air y) Carbon dioxide z) Hydrogen

Description : Carbon dioxide has each of the following uses except: w) refrigerant x) manufacture of baking soda y) fire extinguisher z) valuable reducing agent

Description : Which of the following would you expect to have the highest boiling point? w) methane x) carbon tetrachloride y) chloroform z) chloromethane

Description : A standardized base solution should be protected from which of the following gases? w) hydrogen x) carbon dioxide y) nitrogen z) argon

Description : Which of the following materials is the chief source of natural organic compounds? w) petroleum x) coal y) natural gas z) carbon dioxide

Description : The bubbling off of carbon dioxide when a bottle of carbonated beverage is opened is a good example of: w) deliquescence x) effervescence y) condensation z) sublimation

Description : Carbon monoxide is a poisonous gas for one of the following reasons. w) it is a powerful acid anhydride x) it combines with the hemoglobin of the blood y) it depletes the dissolved oxygen in the blood by forming carbon dioxide z) it is a strong oxidizing agent

Last Answer : ANSWER: X -- IT COMBINES WITH THE HEMOGLOBIN OF THE BLOOD

Description : Carbon atoms link together with other carbon atoms in all of the following ways EXCEPT w) networks x) chains y) ionic bonds z) rings

Description : Which of the following would be least soluble in water? w) Carbon Tetrachloride x) Sodium Oxide y) Magnesium Bromide z) Potassium Phosphate

Description : A waste product in the metabolism of glucose in cells is: w) oxygen x) methane y) carbon dioxide z) urea

Description : What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

Description : The greatest reservoir of carbon dioxide is: w) the atmosphere x) plants y) the soil z) the oceans

Description : Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Description : In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds

Description : Which of the following molecules is polar? w) Iodine x) Carbon Dioxide y) Carbon Monoxide z) Chlorine

Description : Which one of the following molecules exhibits resonance? w) Carbon Tetrachloride x) Carbonate ion y) Sulfur Dichloride z) Phosphorus Tribromide

Description : Dry ice is the solid form of what gas? w) nitrogen x) oxygen y) helium z) carbon dioxide

Description : Chemically, fats are esters of long carbon-chain acids and which of the following: w) ethanol x) glycerol y) ethylene glycol z) sodium hydroxide

Description : One source of Acid Rain is: w) sulfur in fossil fuels x) carbon in coal y) hydrogen in hydrocarbons z) chloroflorocarbons in aerosols

Description : Teflon is produced by polymerizing ethylene which hydrogen substituted with one of the following elements: w) teflinium x) tin y) fluorine z) carbon

Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide

Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel

Description : Which of the following compounds contains both io and covalent bonds? w) Calcium Chloride x) Carbon Dioxide y) Calcium Fluoride z) Calcium Sulfate

Description : The most abundant element in the universe is thoug to be: w) carbon x) oxygen y) hydrogen z) nitrogen

Description : Mass percentage of carbon in CO2 is approximately: w) 37.5% x) 27.3% y) 75% z) 45%

Description : How many carbon atoms are there in one napthalene molecule? w) 6 x) 8 y) 10 z) 15

Description : Which of the following elements forms a tetrahedra structure? w) carbon x) beryllium y) boron z) fluorine

Description : Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur