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Derek L

Derek L.

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Viewed Questions

What aspects of the composition of a nucleus can cause it to be unstable?

What aspects of the composition of a nucleus can cause it to be unstable?

Inquiry into Physics

What is the $\mathrm{pH}$ of a $0.25 \mathrm{M}$ solution of arsenic acid, $\mathrm{H}_{3} \mathrm{As} \mathrm{O}_{4} ?$ In this solution, what are the concentrations of $\mathrm{H}_{2} \mathrm{AsO}_{4}^{-}$ and $\mathrm{HAsO}_{4}^{2-} ?$

What is the $\mathrm{pH}$ of a $0.25 \mathrm{M}$ solution of arsenic acid, $\mathrm{H}_{3} \mathrm{As} \mathrm{O}_{4} ?$ In this solution, what are the concentrations of $\mathrm{H}_{2} \mathrm{AsO}_{4}^{-}$ and $\mathrm{HAsO}_{4}^{2-} ?$

Chemistry: The Molecular Nature of Matter

Explain this statement in your own words and give an example. The properties of the substances around us depend on the structure of the particles that compose them.

Explain this statement in your own words and give an example. The properties of the substances around us depend on the structure of the particles that compose them.

Chemistry: Structure and Properties

Questions asked

ANSWERED

Shalini Tyagi verified

Numerade educator

The balanced equation for a given reaction is ( 4 X+3 Y ightarrow P ). The following data regarding initial reaction rates were collected in the lab. What is the rate law for the reaction? egin{tabular}{|l|l|l|l|} hline Trial & ( [X](M) ) & ( [Y](M) ) & Rate ( (M / s) ) \ hline 1 & 0.020 & 0.060 & ( 3.40 imes 10^{-3} ) \ hline 2 & 0.020 & 0.120 & ( 2.72 imes 10^{-2} ) \ hline 3 & 0.080 & 0.060 & ( 1.36 imes 10^{-2} ) \ hline end{tabular} Rate ( =k[X]^{4}[Y] ) Rate ( =k[X][Y] ) Rate ( =k[X][Y]^{3} ) Rate ( =k[X][Y]^{2} ) Rate ( =k[X]^{4}[Y]^{2} ) Rate ( =k[X]^{2}[Y]^{3} )

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INSTANT ANSWER

What is the pH of a solution that is 0.75 M in ethylammonium chloride? The Kb(ethylamine) = 4.3 x 10−4

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ANSWERED

Oluwapelumi Kolawole verified

Numerade educator

Compare the acids and select the answers that are in the correct order. HCl > HBr > HI HClO > HBrO > HIO HNO3 > HNO2 > HNO H3As > H2Se > HBr

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ANSWERED

Ronald Prasad verified

Numerade educator

Predict the following for the combustion of nitrogen gas at 25 °C. (Hint: Nitrogen gas does not burn.) 2 N2 (g) + O2 (g) ? 2 N2O (l) enthalpy decreases, entropy decreases, free energy increases enthalpy increases, entropy increases, free energy increases enthalpy increases, entropy decreases, free energy decreases enthalpy decreases, entropy decreases, free energy decreases enthalpy decreases, entropy increases, free energy decreases

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ANSWERED

Susan Hallstrom verified

Numerade educator

At a certain temperature, 6.0 moles of C2H5OH are placed in 1.0 L container. At the temperature, the equilibrium constant value is 0.086. How much C2H5OH is present at equilibrium? C2H5OH (g) ⇌ H2O (g) + C2H4 (g) Keep extra significant figures during the calculation and round your answer to 1 decimal places. (Do NOT use scientific notation for your answer.)

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ANSWERED

David Collins verified

Numerade educator

At a certain temperature, 0.571 moles of SO3 are placed in a 1 L container. The reaction is followed by collecting data on the LOSS of SO3. Once equilibrium is established, 0.330 moles of SO3 have been lost. What is the equilibrium constant? 2 SO3 (g) ? 2 SO2 (g) + O2 (g) Keep extra significant figures during the calculation and round your answer to 3 decimal places.

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