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A drink sold in a health food store contains 0.300% (w/v) of vitamin C. What would you have to ingest to obtain 1000 mg of vitamin C.
The atmospheric sulfur dioxide concentration over a certain region is 0.12 ppm by volume. Calculate the PH of the rainwater due to this pollutant. Assume the dissolution of SO2 does not affect its pressure.
What is temperature of boiling water in Denver (in?C) at an elevation of 6000 ft ? 2000 m given that atmospheric pressure at that altitude is about 0.8 atm?
How much CH4, in grams, is needed to produce 50.0 grams of CHCl3?
We had a 0.10 M solution of acetic acid in water. We then placed 2 mL of the 0.10 M solution and 2 mL of toluene into a dropper and mixed. We did some magic and had
A 4.5 g nugget of gold absorbed 276 j of heat. What was the final temperature of the gold if the initial temperature was 25 OC ? The specific heat of gold is 0.129 j/g OC.
Calculate the partition coefficient of butandioic acid between ether and water at 298K.
Determine the energy change associated with these changes in state: a. 138g of steam condenses,b. 261mg of solid mercury melts,c. 8.36g of rubbing alcohol freezes d. 52g of liquid methane boils
A fixed quantity of gas at 21 exhibits a pressure of 730 and occupies a volume of 4.40. Use Boyle's law to calculate the volume the gas will occupy if the pressure is increased to 1.85 while the temperature is held constant.
Write a net ionic equation, including states for teh reaction of Cobalt (II) Chloride and Silver Nitrate 2. Circle the species in which nitrogen has the highest oxidation number
The mercury in a .8142g sample was precipitated with excess of H5IO6. The precipitate was filtered and washed free of the precipitating agent, and .4114g was recovered. Calculate the % of Hg2Cl2 in the sample
how many grams of ammonium sulfate can be dissolved in 0.0200 cacl2 without the formation of a solid?
A student mixes 175.0 grams of water at 62.31oC in a coffee-cup calorimeter with 175.0 grams of water at 25.84oC. The final temperature of the mixture is 41.71oC.
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