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Question: The equivalent weight of a metal is double than that of oxygen. How many times is the weight of its oxide greater than the weight of metal ?
If a student weighed out a 500. mg tablet of vitamin C, measured to the nearest 0.001g and recovered 0.254g of ascorbic acid. What is the percent mass of vitamin C in the tablet
The HCl molecule has a bond length of 127 pm and has partial charges of (+)(-)0.177e. What is the dipole moment of the HCl molecule in units of Debye (D)
Give the structure of the product formed when adipic acid (HOOC-(CH2)2-COOH) is reacted with a large excess of 1-propanol with a sulfuric acid catalyst
Observe the following reactants and predict which of the following may form the potential products given the values for the energy of activation, , and enthalpy of the reaction, , in combination with the molecular orientation.
We add excess Na2CrO4 solution to 17.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams.
The surroundings are at 285 K. The gas may be assumed to be ideal. Calculate the entropy change for the system, the surroundings, and the universe when the gas increases in volume by a factor of four in each of the following processes
For the reaction aA ? Products, use the following choices? a) zero order in A b) first order in A c) second order in A d) a, b, c e) none of the above so what is (1) [A] is constant and (2) the rate is constant over time
calculate how many grams of ammonia could be formed from 2.32mol of nitrogen and h2h2?determine how many grams of
sample of a gas at 25.0 oC and at a pressure of 3 atm, what will the pressure be if the temperature is raised to 50.0 oC?
Identify the following systems as open, closed, or isolated. i) Coolant in a refrigerator coil ii) The combustion of liquid hexane in a bomb calorimeter
What will happen to the equilibrium as OH- ions are added?
Explain why the notation Gly-Val and Val-Gly represent two different molecule rather than the same molecules.
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