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Question 1: On a potential energy diagram, the activation energy is greatest under which of the following conditions?
Question 2: How would a system in which both matter and energy are exchanged freely between the system and the surroundings be classified?
Question 3: What is the oxidation number of sulfur (S) in magnesium sulfate (MgSO4)?
Question 4: Which substance will require more energy to heat if all the samples have the same mass?
Question 5: Which of the following describes what occurs as a liquid becomes a solid?
A generic salt AB2 has a molar mass of 207g/mol and a solubility of 8.80 g/L at 25C. What is the Ksp of the salt
Based on the given chemical equation, how many grams of aluminum are needed to react with 0.6 moles of hydrochloric acid? Al + HCl yields AlCl3 + H2
Find the pH of the resulting solution when 20.00mL of a 0.1000M triethylamine (CH3CH2)3N (Kb = 5.2x10-4) solution is titrated with 20.05mL of a 0.1000M HCl solution.
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 91. Include any hydrogen atoms and the charge.
Consider 4.30 L of a gas at 365 mmH and 20 degrees C. If the container is compressed to 2.40 L and the temperature is increased to 39 degrees C, what is the new pressure, P2, inside the container
If I have hydrogen peroxide, molecular weight(g/mol) is 34.02, its density (g/ml) is 1.2, its concentration is 50% by weight and I have 2mL of it how many mols would I have
Suppose a mixture of two solutions is prepared by mixing 105.-mL of 0.0335 M solution with 35.0-mL of 0.932 M of the same solute (Z). What is the concentration of Z in the combined solution
which observed color band corresponds to the largest energy difference between levels and which is the smallest?
Calculate the planar densities in ions per square nanometer on the (1 1 1) and (1 1 0) planes for (a) NiO and (b) NaCl. Ionic radii are Ni2+ = 0.078 nm and O2-=0.132nm, Na+=0.098nm, and Cl-=0.181nm
The precipitate of CaC2O4, weighed 1.437 grams determine the molarity of calcium chloride in the solution?
Which SUBSTANCE in the following would NOT NEED to be included in an enthalpies of formation table
gasoline has the density of .73g/cm^3. how many liters of gasoline would be required to increase the mass of an automobile from 1271 kg to 1305 kg.
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