Polymers Questions and Answers

A person dissolves 120g of NaCl in 100mL of water. If the
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A person dissolves 120g of NaCl in 100mL of water. If the person dilutes their solution by adding another 300mL of water, what mass, in grams, of sodium chloride (NaCl) will be in the new solution?
What term describes the structural relationship between
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What term describes the structural relationship between cis-1,2 dimethylcyclopentane and trans-1,2-dimethylcyclopentane? A) not isomers B) constitutional isomers C) enantiomers D) diastereomers E)
The reaction 3O₂(g) → 2O₃ (g) with a value of △H = -286 kJ
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The reaction 3O₂(g) → 2O₃ (g) with a value of △H = -286 kJ _________. a. is endothermic and absorbs heat energy overall b. is exothermic and releases heat energy overall c. is spontaneous because
Which of the following processes causes the free radical
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Which of the following processes causes the free radical bromination of methane to be slower than the equivalent free radical chlorination? (A) initiation (B) hydrogen abstraction (C) halogen
A metal with a specific heat of 0.70 J/gC and a mass of 8.00
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A metal with a specific heat of 0.70 J/gC and a mass of 8.00 g has a temperature change of 48.0 degrees. How much heat was added?
"Q", the reaction quotient, is used to... (A) Determine the
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"Q", the reaction quotient, is used to... (A) Determine the concentration of reactants and products at equilibrium. (B) Determine if the reaction is exothermic or endothermic. (C) Determine if the
What is the name of the following compound based on the
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What is the name of the following compound based on the Lewis-Dot structure? (SC.912.P.8.7) a. sulfur oxide b. sulfur trioxide c. monosulfur oxide d. monosulfide trioxide
When solid red phosphorus, P4, is burned in air, the
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When solid red phosphorus, P4, is burned in air, the phosphorus combines with oxygen, producing a choking cloud of tetraphosphorus decoxide. Choose the unbalanced chemical equation for this reaction.
In an alkane series of hydrocarbons, as the number of carbon
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In an alkane series of hydrocarbons, as the number of carbon atoms increases in a chain, the normal boiling point of each successive molecule - increases decreases remains the same
What is the ratio of the average rate of effusion of NOF(g)
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What is the ratio of the average rate of effusion of NOF(g) to that of HBr(g) at 400 K? YOU MUST WRITE THE CALCULATION FOR FULL CREDIT 81:49 The average rate of effusion is the same for the two gases.
Match each variable to the corresponding scenario. number of
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Match each variable to the corresponding scenario. number of moles of gas pressure temperature Steve buys a helium-filled balloon for his birthday in January, On his walk home, Steve notices the
How many moles of hydrogen gas would be needed to react with
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How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 moles of water vapor? Express your answer with the appropriate units. ▸ View Available Hint(s) 0