Chemistry Homework Help: Answers & Questions Page 67

• 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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• Any important information about the element Gold (Au)? i.e. uses, characteristics, history, etc.

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• If silver has a density of 10.5 ##"g/cm"^3## and gold has a density of 19.3 ##"g/cm"^3##, which would have the greater mass, 5 ##"cm"^3## of silver or 5 ##"cm"^3## of gold?

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• How can I write nuclear equations for alpha decay?

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• How many liters is 3.75 kiloliters?

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• How to learn the valancies of the first 20 elements?

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• What is thermochemistry?

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• How can you tell if a molecule is polar or not?

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• Find [H+] in an aqueous solution that is 0.50 M in NaNO2 and is 1.40 M in HNO2. For HNO2(aq), Ka = 4.5 × 10–4.?

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• How do you recognize a molecular compound from its formula?

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• What is ##E_"cell"^@## of the cell?

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• What is the bond used between zinc acetate? How to learn to write such formulas?

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• Why are alkyl groups hydrophobic?

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• How many lone pairs of electrons are on the ##Xe## atom in ##XeF_6##? A) 0 B) 3 C) 2 D) 1

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• What is potassium and iron combined?

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• What is the molecular shape of ICl2^-1 , NO2 & ICl4^-1?

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• What do parentheses mean in chemical formulas?

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• How can we determine whether a compound is oxidant or reductant by its molecular formula?

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• Why are molecules important?

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• How do I determine the molecular shape of a molecule?

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• What is an example chemical energy practice problem?

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• What is titration?

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• Is tryptophan an aromatic amino acid?

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• Silver iodide, ##AgI##, has a Ksp value of ##8.3 xx 10^-17##. What is the solubility of ##AgI##, in mol/L?

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• How do you name alkenes with alcohols?

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• How to calculate the effective nuclear charge of the 1s electrons in helium ?

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• What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? The Ksp of PbCl2 is 1.6 × 10-5?

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• What are the oxidation numbers in the compound H2SO4?

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• How does thermal energy affect the three states of matter?

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• What are examples of physical properties? Chemical properties?

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• How can the enthalpy change be determined?

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• At ##20°C##, the density of copper is ##8.9## ##g####/####cm^3##. The density of platinum is ##21.4## ##g####/####cm^3##. What does this tell you about how the atoms are "packed" in each material?

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• State the Pauli exclusion principle in your own words. Explain why the Pauli exclusion principle is important to the understanding of the periodic table?

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• What is polarity?

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• What is purging? why mostly purging with nitrogen is preffered? and how purging is done in industries?

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• CuO(s)+HCl(aq) equation and net ionic equation ?

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• In a word equasion, eg Copper (II) Flouride, what does the "(II)" mean?

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