Homework Answers Page 10708

• What is the structural formula for 2-methylpropane?

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• What is the empirical formula of methane given methane can be decomposed into 4.5 g of carbon and 1.5 g of hydrogen?

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  Chemistry

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• What is the answer to: 50g of nitrogen (N2) has a volume of _____L at STP (40L)?

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  Chemistry

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• How do you prove ##sin^2x/ (cos^2 +3cosx+2) = (1-cosx)/ (2+cosx)##?

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  Geometry

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• Why is the pH scale 0-14?

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  Chemistry

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• How does the valence electron configuration work for sulfur?

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  Chemistry

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• Which is more effective at raising the boiling point of a soup? Why? SrBr2 Ca3N2 KCl CH4

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  Chemistry

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• What is the basic structure of an atom?

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  Chemistry

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• How do you prove ##1/(sinxcosx) - cosx/sinx = tanx##?

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  Geometry

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• Pure water freezes at 0°C and boils at 100°C. Would tap water likely freeze and boil at those exact temperatures? Why or why not?

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  Chemistry

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• What is the ordered pairs that satisfy the equation y=1/5x?

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  Algebra

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• 4HCl(aq) + MnO2(s) →2H2O(l) + MnCl2(aq) + Cl2(g) How many grams of HCl react with 5.00 g of manganese dioxide, according to this equation?

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  Chemistry

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• According to the nebular theory, how did the Oort cloud form?

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  Science

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• What is the square root of a googol?

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  Precalculus

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• How convection currents form in earth's interior?

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  Science

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• What is the formula for Ammonium sulfide?

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  Chemistry

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• Draw the lewis dot structure of H2SO4 show formal charges? show how its stronger acid than HNO3

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  Chemistry

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• How do gymnosperm leaves differ from angiosperm leaves?

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  Biology

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• How do you calculate specific heat of lead?

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  Chemistry

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• What is the major difference between a cyclic hemiacetal and a cyclic acetal?

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  Chemistry

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• In 1764 the Sugar Act is passed, what was the colonists' and Samuel Adams's response?

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  History

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• What are the characteristics of a red giant star?

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  Science

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• How do you find percent composition of a compound?

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  Chemistry

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• Could you explain what an action or a linking verb is? I know that a verb is what you do, so what are action and linking verbs?

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  English

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• What mass of urea, a nonionic compound, must be added to 20.0 g of ethanol to make the boiling point of ethanol 79.6 ºc? kb = 1.22 ºc/m the normal boiling point of ethanol is 76.5 ºc.

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  Chemistry

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• What happens to a chromosome during cell division?

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  Biology

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• What is the oxidation number of manganese in MnO4-, Mn2O3, and MnO2?

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  Chemistry

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• What body cavity contains the brain? Is it in a body cavity?

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  Psychology

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• What is convection, conduction and radiation and how do these work in space?

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  Science

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• Which liquid, methanol or ethanol, has the larger vapor pressure value at room temperature?

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  Chemistry

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• Explain orbital notation?

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  Chemistry

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• How are plasmodesmata related to the symplast?

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  Biology

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• How are buffer solutions used?

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  Chemistry

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• Who wrote The Wealth of Nations in 1776?

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  History

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• What Spanish military leader overthrew the empire of the Aztecs?

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  History

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• How can negative externalities be internalized?

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  Economics

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• The cytoplasm in a cell carries out a function similar to a function of which human system?

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  Psychology

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• What are the building blocks of nucleic acids?

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  Biology

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• What is the physical significance of the Planck's constant?

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  Chemistry

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• How does the value of an equilibrium constant relate to the relative quantities of reactants and products at equilibrium?

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  Chemistry

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• What is compression?

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  Science

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• What is an example for catharsis?

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  English

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• What does the term dual "nature of light" mean?

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  Chemistry

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• What is the atomic number of iron?

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  Chemistry

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• How would you predict the expected phenotypic and genotypic ratios among the offspring of two individuals who are heterozygous for freckles (Ff) by using a Punnet square?

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  Biology

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• What did the Whig Party believe in?

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  History

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• What is a mixture in chemistry?

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  Chemistry

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• When do spindle fibers attach to kinetochores?

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  Biology

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• What attracted settlers to the Middle Colonies?

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  History

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• What is the ground state electron configuration of the element germanium?

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  Chemistry

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