Chemistry Homework Help: Answers & Questions Page 53

• What is the molar mass of sodium carbonate, (Na2CO3)?

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• Why is ammonia a Lewis base?

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• How do you calculate enthalpy change of combustion?

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• Which sample of fluorine gas, F2, contains the greatest number of fluorine molecules? (multiple choice)

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• Why does the entropy is defined by q reversible? what is the meaning of defining as q reversible not irreversible? :)

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• How do polyatomic ions get their charge?

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• How do you solve titration problems?

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• How do you calculate freezing point depression?

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• How can endothermic reaction be spontaneous?

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• What is the difference between an element, compound, and molecule?

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• Why is 1 butanol sn2?

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• What is the molar mass of sucrose ##C_12H_22O_11##?

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• How would you convert the empirical formula NO2 into the molecular formula, given the molar mass of this molecule is 92 g/mol?

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• What is the formula for barium hydroxide?

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• Converting and dealing with inverse centimeters(cm-1),nanometer(nm-1),seconds(s-1)?

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• How do you convert pKa to Ka?

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• Lead (II) nitrate reacts with potassium iodide to form lead (II) iodide and potassium nitrate. How do you write the balanced equation for this?

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• What will two neutral isotopes of the same element have different numbers of?

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• What is the isotope symbol for an atom that contain 2 protons and 1 neutron?

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• Why in the presence of peroxides HCl and HI do not give anti-markovnikov addition to alkenes?

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• How many atoms are there in a face-centered cubic unit cell of an atomic crystal in which all atoms are at lattice points?

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• How to draw Newman structure for most stable conformations of 1,2-dichloroethane?

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• How would you calculate the average atomic mass of copper if 69.2% of copper has a mass of 62.93 amu and 30.8% has a mass of 64.93 amu?

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• What is the molar Mass of Fe3+, how many ions does it have and what is the mass of ion in one mole of compound?

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• How to calculate the percentage difference between the mass of the reactants and the mass of the product relative to the mass of reactants?

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• Chlorous acid, ##HClO_2##, contains what percent hydrogen by mass?

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• What is the difference between a reversible reaction and a dynamic equilibrium?

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• Why is the heat of vaporization for a substance greater than its heat of fusion?

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• An ion ##"M"^(3+)## has 10 electrons and 14 neutrons what is the atomic number and mass number of M?

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• What is the difference between a quantitative and a qualitative measurement?

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• Magnesium + hydroselenic acid ------>

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• Is milk souring a physical or chemical change?

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• What is electrolytic decomposition?

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• How many atoms in methane? Please explain the rule.

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• How can you increase gas pressure in a container?

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• What is the Born-Haber Cycle?

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• How many centimeters are in 6 inches?

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• Valency of bromine?

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• What is the chemical equation for calcium + phosphorus ---> calcium phosphide?

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• What is the oxidation number for HOCl and NaOCl?

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• What is the equation for the reaction with Butan-1-ol with [o] acidified ##K_2Cr_2O_7##?

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• What is solvation?

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• How can I calculate thermochemistry equations for phase changes?

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• What is the electron configuration for a sodium ion?

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• What is the percent composition of chromium in BaCrO4?

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• Draw the Lewis structure for HCOOH (1 H is bonded to an oxygen, 1 H is bonded to carbon, and both oxygens are bonded to carbon) ?

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• Calculate the number of molecules in 10.92 g of CCl4?

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• What is Graham's Law of Effusion?

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• How do you calculate moles of ions in solutions?

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• How is the kinetic theory of matter related to gases?

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