Chemistry Questions

Paintball is a popular recreational activity that uses a metal tank of compressed carbon dioxide or nitrogen to launch small capsules of paint. A typical tank has a volume of 508 cubic centimeters. A 340. gram sample of carbon dioxide is added to the tank before it is used for paintball. At 20.oC, this tank contains both CO2(g) and CO2(l). After a paintball game, the tank contains only CO2(g).Determine the total number of moles of CO2 added to the tank before it is used for paintball.
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BaCl2 (aq) and K2CrO4 (aq) combine in a double replacement reaction. Select the reaction below that correctly represents the products of the reaction. BaCl2 (aq) + K2CrO4 (aq) Ba (s) + 2KCl (aq) + 2Cr (s) + 2O2 (g) BaCl2 (aq) + K2CrO4 (aq) BaCrO4 (s) + 2KCl (aq) BaCl 2 (aq) + K2CrO4 (aq) BaCrO3 (s) + 2KCl (aq) + O (g) BaCl2 (aq) + K2CrO4 (aq) BaCrO4 (s) + KCl (aq)
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What are m and n in the rate law equation? Rate = k[A]^m[B]^n A. They are the coefficients obtained from the equation. B. They are the starting temperatures of the reactants. C. They are the molar masses of the reactants. D. They are experimentally determined exponents.
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What is the Ka’aba?an Islamic deitya Muslim pilgrim a book of Sharia lawsan ancient stone temple
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Boron occurs naturally as two isotopes. What is the difference between these isotopes? a)They have different numbers of electrons and different charges.b)They have different numbers of neutrons and different charges.c)They have different numbers of protons and different mass numbers.d)They have different numbers of neutrons and different mass numbers.
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The ratio of hydrogen atoms to sulfur atoms in sulfuric acid, H2SO4 is
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A 4,000 mL solution of AgNO3 contains 17.00 g of solute in water. Calculate the molar concentration of the solution.
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Having food in your stomach keeps alcohol from being absorbed
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Process in which water vapor turns to liquid
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Which element is capable of forming long chains by forming single, double, or triple bonds with itself?
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When iron reacts with oxygen to form rust, each iron atoma. loses three ions.c. gains three ions.b. loses three electrons.d. gains three electrons.
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After the food has been chewed and lubricated, it is pushed by the tongue into the___________.larynxpharynxstomach
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Which of the following pieces of laboratory equipment is not directly used to make measurements?a. test tubeb. graduated cylinderc. rulerd. thermometer
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If matter has a definite volume but no definite shape, in what state is it?
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What is produced as a lead-acid battery is discharged?a. Acidc. Electrolytesb. Lead sulfated. Zinc oxide
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_____ is a process that helps fuel your metabolism.DeoxidationOxidationGlycolysisHydrolysis
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Rust forms when _____ reacts with chemicals in rocks.
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A covalent bond in which electrons are shared unequally isa. polar.b. a double bond.c. ionic.d. polyatomic.
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