Chemistry Homework Help: Answers & Questions Page 76

• Why is beta decay continuous?

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• How is molecular polarity related to solubility?

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• How is the geometry of so2 different from that of co2 ?distinguish between the geometeries on the basis of dipolmoment

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• Ironsulfide has 36.5% S by mass. Ironsulfide is heated in oxygen, which makes SO2(g) + ironoxide containing 27.6% O by mass. a.Write a balnced equation for reaction. b.If 1.0 kg of the iron sulfide reacts w excess O, what's theoretical yield of ironoxide?

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• Fe2O3(s) + 3CO(g) → 2Fe(s) +3CO2(g) How many grams of iron can be produced from 1.00 kg Fe2O3?

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• How many Moles of electrons weigh one kilogram?

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• What is the molar mass of helium gas?

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• What is neutralization?

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• Why is molality used for colligative properties?

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• Precious metals are commonly measured in troy ounces. A troy ounce is equivalent to 31.1 g. How many moles are in a troy ounce of gold? How many moles are in a troy ounce of platinum? of silver?

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• How much water would I need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution?

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• How do you name imines?

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• Haworth formula draw structure of sucrose and explain why it is considered non reducing sugar?

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• What is the pOH of a 2.7x10-11 M solution of LiOH?

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• What are the six possible alkenes for C5H10?

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• How are transverse waves and compressional waves alike?

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• How do you write the the reaction of lead(II) nitrate (aq) with sodium iodide (aq) to form lead (II) iodide precipitate and sodium nitrate solution?

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• How can I find the percent compositions of (NH4)3PO4?

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• How many stereoisomers can exist for cortisone?

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• When does a test tube need to be held with the test tube holder?

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• An iron atom has an atomic number of 26 and an atomic mass of 55.8 amu. How many protons does an iron atom have?

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• When ##"H"_2"SO"_4"## reacts with sodium hydrogen carbonate there is no reaction at all. What is the chemical equation for this?

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• Red light has a wavelength of 6.8E+2 nm. What is its frequency in 1/s, or Hz?

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• What is t-butyl alcohol?

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• At 27°C and 1 atm, 20% of N2O4 dissociated into NO2 as shown below. Determine partial pressure and equilibrium constant, kp N2O4 (g) <> 2NO2 (g) (Assume that the number of mole of N2O4 before dissociation is 1 mole)?

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• An aqueous solution is 12.00% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.036 g/mL. What are the molality, mole fraction, and molarity of NH4Cl in the solution?

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• How many resonance structures can be drawn for ozone, O3?

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• What does the atomic number represent?

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• What is steel an example of?

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• What is a salt and how is it compared with acids and bases?

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• When a sulfur (s) atom becomes an ion, what charge does it usually have?

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• What is the full electron configuration for ##"Mg"^(2+)##?

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• How would you explain the Aufbau principle?

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• R/S Absolute configuration: how to decide if it is R or S configuration ?if it given that (1) NH2 will be in the position of W (2) CH3 will be X (3) Cl will be Y (4) CH2NH2 will be in the position of Z I will attach a pic to show the place of compounds

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• Will a precipitate form when we micx Ca(NO3)2(aq) with NaOH(aq) if the concentrations after mixing are both 0.0175M?

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• Why does hydrogenation require a catalyst?

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• What is the formula for magnesium sulfate heptahydrate?

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• What is the most acceptable electron dot structure for ##N_2H_2##?

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• The density 10.5 molal of ##NaOH## solution is 1.33 gmL-1. How do you calculate mole fraction of ##NaOH##?

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• What are the differences between E1 and E2 reactions?

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• Two elements that have properties similar to those of the element sodium?

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• What is the hybridization of the central atom in ##ClF_5##?

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• Using lewis structure,determine which of CO and OH is a radical (2)Why is it possible for a molecule to have polar bonds yet have a dipole moment of zero?

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• What is the difference between electrostatic attraction and intermolecular forces?

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• What is the formula of aluminum phosphate?

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• Why are valence electrons important?

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• What are the conclusions of the Cathode ray experiment?

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• A sample of 0.2 moles of magnesium bromide. What is the number of moles of magnesium ions and bromide ions?

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• Explain what is ferrocene?

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• What are binary compounds?

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