Chemistry Homework Help: Answers & Questions Page 67

• How are compounds and mixtures different?

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• What is the electron configuration of neon?

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• What is the abbreviated electron configuration of Sn?

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• Why is the rate determining step slow?

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• What is the covalent compound formula for Nitric Acid?

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• What is the empirical formula of caffeine?

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• How many electrons does hydrogen have?

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• How can I convert Newman projection for the staggered and eclipsed conformations of 2-methylpentane for rotation about the ##C2-C3## bond to bond line notation?

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• When CH3CHCH2 is passing through by HBr in the presence of organic peroxide, what's the name of the product?

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• What is the rock's age? A rock contains one-fourth of its original amount of potassium-40 The half-life of potassium-40 is 1.3 billion years?

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• How do you know which element is the most reactive in the periodic table?

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• How can I find the molecular formula from molar mass?

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• At 20°C the vapor pressure of benzene (C6H6) is 75 torr, and that of toluene (C7H8) is 22 torr. Assume that benzene and toluene form an ideal solution. What is the composition in mole fractions of a solution that has a vapor pressure of 40. torr at 20°C?

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• Use Henry's law to determine the molar solubility of helium at a pressure of 1.5 atm and 25 ∘C. Henry’s law constant for helium gas in water at 25 ∘C is 3.70⋅10−4M/atm.?

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• How can I draw the following esters: ethyl butanoate, pentyl propanoate, propyl 3-ethylhexanoate?

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• What is inductive effect?

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• ICE table. How does one know if the x is positive or negative for the products and reactants? this question is contradicting what i thought because the x is negative in the reactants yet one reactant starts with zero concentration.

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• Solubility product of Hg2Cl2 at 25 C is ##1.2*10^-18 mol^3 dm^-9##. The concentration of ##Hg2+^2+ ions## (in M) in a 0.040 M NaCl (aq) sol. saturated with ##Hg2Cl2## at 25 C is?

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• What does Atom mean?

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• Explain how the law of conservation of mass is the basis for all stoichiometry?

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• What is the molecular geometry of PBr5? Draw its VSEPR and Lewis structure.

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• How do catalysts affect collision theory?

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• What is the chemical formula of salt?

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• Why are exothermic products more stable than reactants?

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• What is the charge for all elements in Group 1A?

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• Why are mole ratios central to stoichiometric calculations?

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• What does an atomic number tell you about an element?

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• What is Ka in chemistry?

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• How many protons are in the nucleus of an atom of oxygen?

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• How is the number of neutrons in an atom calculated?

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• 'Atoms of element X have 6 unpaired electrons. What could be element X?" The answer is chromium

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• What is the bond polarity of CCL4?

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• The ion HCO3–(aq) can act as an acid or a base in water. (a) Write the reaction for it acting as a base. (b) Write the reaction for it acting as an acid. ?

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• In reduction reaction, the reduced atom gains one or more electrons. Why, then, is this reaction called reduction?

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• 1.7 g of NaNO3 (Mr = 85) is dissolved in water to prepare 0.20 dm3 of solution. What is the concentration of the resulting solution in mol dm–3?

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• What are the empirical formulas for tetraphosphorous decaoxide (P4O10) and ethane (C2H6)?

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• What is glutathione and its role in a cell?

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• A science beaker has a mass of .2400 kg, and a volume of 500 mL. What is the overall density of the science beaker?

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• What functional groups are there in aspartame?

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• If measurements of a gas are 50L and 300 kilopascals and then the gas is measured a second time and found to be 75L, describe what had to happen to the pressure (if temperature remained constant). Include which law supports this observation?

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• What do quantitative and qualitative measurements mean in science?

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• What are the s, p, d, f blocks on the periodic table?

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• Why is vinyl chloride is hydrolysed more slowly than ethyl chloride?

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• How many covalent bonds can carbon form with other atoms?

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• How are ionic bonds and van der Waals forces similar and different?

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• Write your question here...what is mole in Chemistry?

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• Do strong acids completely dissociate in water?

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• What is the name of the central part of the atom?

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• How are ionic bonds formed?

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• Ca element's exited state?

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