Homework Answers Page 10496

• How many sides does a regular nonagon have?

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  Geometry

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• Why is nucleus called the brain of the cell?

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  Biology

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• Why does the natural rate of unemployment change?

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  Economics

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• A blue whale was once recorded with a length of 36 yards. How many centimeter long was the whale, if l in is 2.54 cm?

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  Algebra

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• What does the gradient function mean?

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  Calculus

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• How do lichens contribute to primary succession?

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  Biology

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• What is the difference between a limiting reactant and an excess reactant?

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  Chemistry

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• What exactly is HBsAg and HBsAb? What exactly is the difference between HBsAg and HBsAb? Are they antibodies that protect against the HBV or is it the actual virus?

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  Psychology

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• How much is 63 kg in pounds?

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  Algebra

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• What is Stefan Boltzmann law used for?

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  Physics

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• Prime numbers between 11 and 31?

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  Algebra

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• How do you write 3.5 as an improper fraction?

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  Algebra

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• What is emf?

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  Physics

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• What is the circumference of a circle with a radius of 36 inches?

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  Geometry

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• What is the difference between polar and non-polar covalent bonds?

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  Chemistry

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• Why is hydrogen included in the metal activity series?

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  Chemistry

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• Which substance in each pair of liquids would you expect to be less volatile? Why? butane or water, NH3 or NH2OH, CH3OH or CH4

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  Chemistry

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• In the metric system, what is the base unit for length?

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  Chemistry

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• Write the balanced equation for the reation of iron (III) phosphate with sodium sulfate to make iron (III) sulfate and sodium phosphate?

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  Chemistry

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• What is the function of an amoeba's pseudopodia?

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  Biology

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• How is the small intestine adapted for digestion?

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  Biology

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• A motorboat accelerates uniformly from a velocity of ##6.5## ##m####/####s## to the west to a velocity of ##1.5## ##m####/####s## to the west. If its acceleration was ##2.7## ##m####/####s^2## to the east, how far did it travel during the acceleration?

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  Physics

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• How many liters of a 3.0 M H3PO4 solution are required to react with 4.5 g of zinc? __ H3PO4 + __ Zn _x0001_ __ Zn3(PO4)2 + __ H2

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  Chemistry

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• What are the first 5 multiples of 18?

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  Algebra

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• Given the mass of an electron is (1/1836) amu, what percentage of the mass of a carbon-12 atom is contributed by its electrons?

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  Chemistry

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• How do you use the second fundamental theorem of Calculus to find the derivative of given ##int (1)/(2+sin(t))## from ##[0, lnx]##?

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  Calculus

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• What is the hybridization of P in ##PF_3## and ##PF_5##?

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  Chemistry

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• How do I evaluate cos(pi/5) without using a calculator?

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  Geometry

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• How does the nuclear membrane differ from the cell membrane?

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  Biology

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• How do periodic trends affect bonding?

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  Chemistry

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• Balance chemical equation to show how to convert: a.zinc carbonate to pure sample of zinc sulphate b.calcium oxide to a pure sample of calcium carbonate ?

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  Chemistry

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• What is Chemiosmosis? And how does it function in the chloroplast?

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  Biology

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• What is the molecular weight of sulfur if 35.5 grams of sulfur dissolve in 100.0 grams of CS2 to produce a solution that has a boiling point of 49.48°C?

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  Chemistry

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• What is the position of oxygen in the periodic table?

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  Chemistry

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• What is the perimeter of a right triangle with a leg of 10 units and a hypotenuse of square root of 127 units?

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  Geometry

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• How do you prove the identity ##(sinx - cosx)/(sinx + cosx) = (2sin^2x-1)/(1+2sinxcosx)##?

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  Geometry

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• The volume of a square pyramid with a height equal to four less than the length of a side of the base is given by ##V(x) = 1/3(x^3+8x^2+16x)## where ##x## is the height in cm. If the length of a side of the base is 9 cm, what is the volume of the pyramid?

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  Algebra

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• How does chemical potential energy change during endothermic reaction?

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  Chemistry

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• What is 40% of 98?

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  Algebra

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• What is the name of the alkane having five carbons?

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  Chemistry

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• What does it mean to have type "O positive" blood type? is that rare or common in people?

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  Psychology

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• Kate is using fraction strips to add ##4/10## and ##4/5##. She uses one whole strip to represent the sum. How many fifths strips does she need to complete the sum?

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  Algebra

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• Is the digestive system the same as the gastrointestinal system?

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  Psychology

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• What is the difference between a habitat and an ecosystem?

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  Biology

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• What is the difference between point-source and nonpoint-source water pollution?

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  Environmental Science

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• Do red blood cells have a cytoplasm and cell membrane?

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  Biology

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• Quest (1) determine the ksp for magnesium hydroxide Mg(OH)2 where the molar solubility of Mg(OH)2 is 1.4X10^-4 M? quest (2) the Ksp for Zn(OH)2 is 5.0x10^-17 .determine the molar solubility of Zn(OH)2 in a buffer solution with a pH of 11.5?

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  Chemistry

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• What body system is the pancreas a part of?

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  Psychology

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• How long is 33 inches added to 4 feet 7 inches?

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  Algebra

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• What is the VSEPR shape of the molecule H2O?

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  Chemistry

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