Homework Answers Page 10577

• 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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• Is the urethra part of the male reproductive system? Is it part of the female reproductive system?

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  Psychology

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• How much is 42 divided by 0?

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  Algebra

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• Can't we use hybridization concept for ionic compounds?with the help of hybridization we can predict shape of compound ,so if it is not applicable in ionic compounds how can we predict shape of ionic compounds?

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  Chemistry

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• How do you express ##log 36## in terms of ##log 2## and ##log 3##?

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  Precalculus

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• How do you graph ## y = sin(x - 45)##?

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  Geometry

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• The diameter of Earth, about 8,000 miles, is about 4 times the diameter of the moon. What is the approximate diameter of the moon?

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  Algebra

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• The diameter of a steel rod is given 56 +- 0.2 mm. What does it mean?

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  Physics

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• What is the net ionic equation of the reaction of ##FeCl_2## with ##NaOH##?

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  Chemistry

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• A sample of 0.0512 mol of iron(III) chloride, FeCl3, was dissolved in water to give 25.0 mL of solution. What is the molarity of the solution?

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  Chemistry

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• In the figure, one end of a uniform beam of weight 420 N is hinged to a wall; the other end is supported by a wire that makes angles θ = 29° with both wall and beam. ?

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  Physics

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• How can I draw a perspective formula for ( S )-2-chlorobutane?

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  Chemistry

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• Jessica drew a circle divided into 8 equal parts. She shaded 6 of the parts. Which fraction is equivalent to the part of the circle that is shaded?

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  Geometry

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• What is a phrase in words for 42s?

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  Algebra

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• How do you find an equation of the tangent line to the curve at the given point if ##y = sec (x) - 2 cos (x)## and ##p=(pi/3, 1)##?

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  Calculus

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• Approximately how many Americans died during the Vietnam War?

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  History

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• How do you convert 355 kJ to cal?

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  Chemistry

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• During a lunar eclipse, what color is the moon?

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  Science

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• What substance is produced by the ceruminous glands?

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  Psychology

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• What are some of Cinderella's character traits?

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  English

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• What is the net ionic equation that represents a neutralization reaction between H2SO4 and NaOH?

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  Chemistry

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• Is calcium oxide (CaO) an ionic compound or covalently bonded molecule?

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  Chemistry

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