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Q1: Discuss the various phases of matter and their physical and chemical changes.
Q2: Define atomic number, mass number, isotopes, and organize the elements by using the periodic table.
Q3: Recognize the basic concepts of organic chemistry and the classes of organic compounds.
Q 4: Define chemical reactions, reactants, and products, and state the law of conservation of mass.
1. Differentiate between ionization energy, electron affinity, and electronegativity.
2. Define a catalyst and describe how it can affect the rate of reaction.
3. Explain the 4 levels of protein structure.
Compaire soltuions 2 and 4. how does the common-ion effect influence the ph of solution 4? explain fully, and calculate the expected ph of each of these soltuions.
How many mL of 0.64 molar NaOH must be added to 39 mL of 0.11 molar HCl to completely neutralize the acid.
How do you find the theoretical mol of HC2H3O2 if you have 33.0 g of acetaldehyde and 16.5 g of oxygen and only produced 18.02 g of acetic acid 2CH3CHO + O2--> 2HC2H3O2
n2 is .070 moles o2 is 0.35 moles and co2 is 0.20 moles the total is pressure 1.55 atm what is the pressure of
What is the charge associated with each side of the HI molecule? Express your answer in Coulombs to three significant figures.
Question- Why would you expect the rate of the reaction of the acetone with iodine to increase with increasing temperature
A 2.0*10^-3 M solution of manganese (II) sulfate is gradually made more basic by the addition of a 1.0 M solution. At what pH will manganese (II) hydroxide begin to precipitate? (Ksp = 2* 10^-13
question technetium-99 is widely used to diagnosis in medicine. its half-life is 6.02 hours. a sample prepared in the
Consider the following. You identify a line with a wavelength of 503 nm. Describe how you would go about determining which of the lines in table 1 of the experiment guide that it corresponds to.
What you observed upon the addition of NH3(aq) to magnesium chloride solution / what species are present in the test tube?and what happened when we add NH4Cl?
For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction C2H6 (g)+ H2 (g) -> 2CH4
how many moles of co(nh2)2 are present in 150 g of water, if the freezing point of the solution is -4.02 degrees c?
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