Homework Answers Page 10584

• Calculate the pH of a buffer when sodium hydrogen sulfate 0.1M and sodium sulfate has a concentration of 0.230M. (Give that Ka of hydrogen sulfate ion is 1.2*10^-2)?

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  Chemistry

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• Why is iron hard and sodium is soft, yet they are both metals?

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  Chemistry

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• How would you determine the formula and molar mass of aluminum sulfide?

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  Chemistry

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• How can I balance this chemical equation Pb(NO3)2 + K2CrO4 = PbCrO4 + KNO3?

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  Chemistry

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• How are electric forces and charge related?

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  Physics

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• Where does meiosis occur in the human body?

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  Biology

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• What is the force, in terms of Coulomb's constant, between two electrical charges of ##44 C## and ##39 C## that are ##12 m ## apart?

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  Physics

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• Which type of hybridization is found in the compound PF5 ?

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  Chemistry

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• If a series–parallel circuit has all 30-ohm resistors, what is the total resistance when r1 is in series with a parallel circuit consisting of r2 and r3?

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  Physics

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• Is a bell curve symmetric, right-skewed, or left-skewed?

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  Statistics

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• How do you write ##y=2/3x+4## in standard form?

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  Algebra

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• What is a radioactive isotope? Describe two scientific uses of radioactive isotopes.

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  Chemistry

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• What powers did the Congress have under the Articles of Confederation have?

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  History

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• What is cladistics in biology?

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  Biology

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• How many sig figs for this question: now determine the grams per litre (g/L) concentration of acetic acid in the undiluted vinegar (assume the molar mass of acetic acid is 60.0 g/mol)? I don't want the answer I'm asking for how many sig figs ?

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  Chemistry

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• What is dew or frost?

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  Science

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• What is the square root of 8 to the nearest integer?

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  Algebra

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• Permutation and combination? In your own words, explain the difference between a permutation and a combination. Also, give an example of a problem whose solution is a permutation and an example of a problem whose solution is a combination.?

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  Statistics

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• Why are dispersion forces weaker than dipole-dipole forces?

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  Chemistry

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• How does a human population achieve zero population growth?

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  Environmental Science

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• What happens in meiosis during telophase l?

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  Biology

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• What is the formula for calcium hydroxide?

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  Chemistry

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• What is jump discontinuity in math?

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  Calculus

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• How do you evaluate the integral of ##(ln x)^2 dx##?

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  Calculus

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• What is Diffusion?

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  Biology

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• How do you convert 7/12 to a decimal?

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  Algebra

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• If lemonade costs $0.52 per pint, what is the cost per cup?

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  Algebra

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• How does double fertilization in a flowering plant occur?

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  Biology

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• Why is HF a weak acid, and not a strong acid?

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  Chemistry

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• What are vitamins made of?

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  Chemistry

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• Is "aunt" a proper noun?

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  English

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• What part of speech is the word "be" and why?

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  English

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• What is the difference between silicate and non-silicate minerals?

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  Science

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• What did the Geneva Accords provide for?

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  History

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• Why did the invention of the printing press had a great effect on society?

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  History

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• What is the pH of a saturated zinc hydroxide solution?

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  Chemistry

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• Does Jupiter have a surface?

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  Science

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• How do you write ##log_4 64 = 3## in exponential form?

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  Precalculus

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• About how long ago did the Bantu migration occur?

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  History

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• How many ounces in 1/4 of a pound?

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  Algebra

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• What is metamorphosis?

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  Biology

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• Find the limit as x approaches infinity of ##y=ln( 2x )-ln(1+x)##?

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  Calculus

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• How do you graph y=mx+b?

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  Algebra

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• How do you round 247,499 to the nearest thousand?

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  Algebra

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• What are cumulus clouds and what do they suggest about atmospheric conditions?

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  Science

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• What are convection currents and what causes them?

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  Science

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• What is the least common multiple of 18, 30, and 50?

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  Algebra

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• What is the effect of the temperature on the evaporation rate of ethyl alcohol?

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  Chemistry

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• How do you convert 7.8 km to miles?

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  Algebra

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• Write the equation for the ionization of HC2H3O2?

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  Chemistry

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