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The heat of vaporization of a certian refrigerant is 162 j/g. calculate the number of kilograms of refrigerant that must be evaporated to freeze a tray of 17 one ounce ice cubes starting with water at 15C, Heat capacity of water is 4.184 j/gC deltaH of fussion of water = 333 j/g.
Assume equilibrium with the calcium carbonate in the sediment and calculate the concentration of calcium ion (in mg/L -1) in the water (25C).
The n.itrogen is converted to N2(g) and collected. given that 350-mg same yields 42.2 ml N2 at STP, calculate the percentage of nitrogen in the sample
which compound has lowest soulubility in water?
Show why this chemical is dangerous, by showing chemical reactions for its formation in the environment and its reactions in the atmosphere.
What is the maximum amount of solid NaCl will dissolve in 1 liter of a 1 M solution with a 1:1 ration of MgCl2 and CaCl2
What is the percent yield of a reaction in which 111.6 g phosphorus trichloride reacts with excess water to form 60.8 g HCl and aqueous phosphorous acid (H3PO3)?
In photosynthesis, plants use energy from the sun in combination with carbon dioxide and water to form glucose (C6H12O6) and oxygen. If 4.50 moles of water react with carbon dioxide, what mass of glucose is produced?
Lewis Structure and state which of the given compounds are isomers - There are three compounds are given as I. pentane , II. 2-methylbutane , III. 2,3-dimethylbutane , IV. 2,2-dimethylpropane V.
Uric acid dissociates with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10-6m. Could the electron make a transition from the ground state to a higher energy level?
This product contains no chemicals." What does this really mean and how do you feel about "natural" vs "synthetic" products?
Write an equation for the sequential hydroboration and H2O2/OH ¯ oxidation of 4-ethyl-3- heptene. Indicate the main monosubstitution products in each of the following reactions.
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