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A rigid tank of 100 L contains equal volumes of liquid and vapor of refrigerant R12 at 35 C. We add R12 to the tank until the final mass of R12 inside the tank is 80 kg. If the temperature remains constant, what is the volume occupied by the liquid in the final state? How much mass of R12 was added to the tank?
In countries where potassium iodide is added to salt, iodine deficiency or goiter has been almost completely eliminated. The recommended daily allowance (RDA) for iodine is 150 pg/day.
A titration of 60.0ml of 0.30M pyridine, C5H5N, required 90.0ml of 0.20M HCL to reach the equivalence point. What is the pH at this equivalence point. Kb(C5H5N)= 2.0e-9.
From the understanding of colligative properties, how would I design an experiment to measure the freezing point of a material which freezed at -2'c using the same apparatus used in the laboratory and any chemical reagents commonly found in a chemi..
Suppose that 25 g of each of the following substances is initially at 28.0degrees C. What is the final temperature of each of the following substances upon absorbing 2.35 kJ of heat.
Propionic acid and methyl acetate are isomers. Which has the higher boiling point and why. Which one would have the greater rf value on TLC.
The reaction of 1-methyl-1,3-cyclohexadiene with HBr can produce two distinct products. Give the structure of the two products and explain why each one is formed.
For fully protonated (99%) benzoic acid in solution write the henderson-hassalbach equation and calculate the pH.
determine the number of stereoisomers for the following. Sketch these isomers and identify pairs of enantiomers ABA,
Cyclic Alkyne reaction with KMnO4 and O3, Molecule 1: 5 carbon ring, carbon 1 has a carbon attached which also is triple bonded to another carbon (this end carbon just has a H attached.
The simplest formula of a substance is found to be CH2O, and its approximate molar mass is found by experiment to be 93 g•mol-1. What is its exact molar mass?
given the reaction 4als 3o2g --gt 2al2o3s what is the minimum number of moles of oxygen gas required to produce 1.00
Solid iron reacts with liquid water to produce solid iron(III) oxide and hydrogen gas. Balance the redox reaction. What is the oxidizing agent in the redox reaction and what is the total number of electrons transferred in the reaction?
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