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A stock solution of FD&C Yellow No. 5 (Tartrazine, 534.3 g/mol) was prepared by placing 5.25 g in a 250-mL volumetric flask and diluting to 250 mL with distilled water. Calculate the molar concentration of the stock solution.
Which is a redox reaction. identify reducing and oxidizing agents. a) CH4 burns in oxygen to produce carbon dioxide and H2O. b) copper metal forms copper (I) oxide on exposure to air. c) iron rusts to form Fe2O3.
Nitroglycerin (C3H5(NO3)3 is a stock sensitive liquid that detonates that is it decompresses explosively to form N gas, steam, carbon dioxide gas, and oxygen gas. Calculate the volume of product gases at 215 KPa, and 275 Celsius from the detinatio..
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
the molecules water and methane have similar masses but methane changes from a gas to a liquid at -161 degrees celsius.
A 4 g sample of the hydrated crystal Ba(OH)2• χH2O is heated until all the water is removed. The remaining solid weighs 2.17 g. Calculate the formula of the hydrated crystal.
Compute the number of electrons in a flake of pure gold valued at $0.32. Assume that the price of gold is $1219.0/troy oz.
Metabolic reactions are regulated by a variety of regulatory mechanisms. Mention and discuss five mechanisms. Give clear examples of each.
A solution is prepared by dissolving 159 g sucrose (C12H22O11) in enough water to produce 1.40 L solution. What is the molarity of this solution?
if oxygen gas were collected over water at 22 c and the total pressure of the wet gas were 650 mm hg what would be the
Compare the bond lengths to the average bond lengths listed in Table. Can you explain any differences?
A 32.0-g sample of water at 290. K is mixed with 48.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Describe a common buffer system and elution method in ion exchange chromatography. What are the salt ions in the elution buffer good for
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