Homework Answers Page 10606

• What would distinguish the mass spectrum of 2,2-dimethylpropane from the mass spectra of pentane and 2-methylbutane?

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  Chemistry

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• Can you explain the formation of an ionic compound from zinc and chlorine?

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  Chemistry

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• \Who was Samuel Tilden?

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  History

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• How can electromagnetic waves be used to measure distance?

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  Physics

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• What negative effect did the cotton gin have in America?

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  History

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• What is the square root of 121 over 100?

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  Algebra

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• What is the formula for potassium sulfide?

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  Chemistry

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• What are utilities?

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  Economics

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• What is the balanced molecular equation for the neutralization reaction between HCl and Ba(OH)2 in aqueous solution? Include physical states.

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  Chemistry

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• What is the formula for magnesium nitride?

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  Chemistry

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• What is a vesicle?

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  Science

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• What is a metaphor, simile, hyperbole, irony, alliteration, and imagery?

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  English

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• How do you find least common multiple of 12 and 2?

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  Algebra

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• Zero is the freezing temperature of water on which temperature scale?

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  Chemistry

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• Would a density independent limiting factor have more of an effect on population size in a large ecosystem than in a small ecosystem?

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  Biology

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• What is the area of an equilateral triangle of side length 16cm?

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  Geometry

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• How do vectors subtract graphically?

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  Physics

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• What type of ecosystems do lions live in?

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  Science

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• How does the octet rule relate to alkali metals?

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  Chemistry

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• How was Alexander Hamilton killed?

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  History

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• Using Huygen's principle, explain why diffraction of light can be regarded as a special case of interference ?

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  Physics

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• What SI units are used to measure density?

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  Chemistry

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• What is mechanical advantage and mechanical efficiency??

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  Physics

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• Explain why the square root of 89 must be between 9 and 10?

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  Algebra

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• What are neurotransmitters?

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  Biology

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• What does a cell membrane do for animal cells, and what do they do for plant cells?

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  Biology

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• What is the concavity of a linear function?

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  Calculus

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• What were the terms of the Convention of 1800?

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  History

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• What are the parts of the tundra ecosystems?

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  Science

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• How would you find the percent abundance of 2 isotopes of an element, given the atomic weight and mass number of each isotope?

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  Chemistry

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• How do you calculate molality from molarity?

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  Chemistry

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• Benzene is a hydrocarbon, a compound of carbon and hydrogen only. It is found to contain 7.74% H by mass. Its molar mass is 78.10 gmol^-1. Determine its empirical and molecular formula. Help?

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  Chemistry

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• What is the area of this regular hexagon?

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  Geometry

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• When a ball is thrown upwards, what is the relationship between kinetic and potential energy at the initial position and maximum height reached by the ball?

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  Physics

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• What is the main function of carbohydrates, lipids, proteins, and nucleic acids?

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  Biology

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• If first order reaction x tend to y 40% of given sample of compound remain unreacted in 45min.Calculate rate constant of reaction?

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  Chemistry

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• How is Le Chatelier's Principle used in the Haber process?

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  Chemistry

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• Where is the x-axis and y-axis located?

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  Algebra

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• Where do the light reactions of photosynthesis occur in plant cells?

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  Biology

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• How many NaOH is required to neutralize 1500##cm^3## of 0.1N HCl? a. 60g b. 6g c. 4g d. 40g

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  Chemistry

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• How do you find the scalar and vector projections of b onto a given ##a = i + j + k##, ##b = i - j + k##?

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  Precalculus

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• What is a barometer and how is it useful for weather forecasting?

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  Science

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• What is the difference between reflection and refraction?

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  Physics

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• A farmer owns 1000 meters of fence, and wants to enclose the largest possible rectangular area. The region to be fenced has a straight canal on one side, and thus needs to be fenced on only three sides. What is the largest area she can enclose?

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  Calculus

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• How does the circular flow model reflect interdependence?

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  Economics

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• A carbon-12 atom has 6 protons, 6 neutrons, and 6 electrons. How many protons does a carbon-14 atom have?

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  Chemistry

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• How do you convert 8 mi/h to ft/min?

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  Physics

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• Two slices of Dan's Famous Pizza have 230 calories. How many calories would you expect to be in 5 slices of the same pizza?

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  Algebra

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• How do you find the integral of ##xe^(x/2)dx ##?

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  Calculus

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• What is the oxidation number for ethyne?

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  Chemistry

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