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Problem- Complete and balance the equation for this reaction in basic solution. Phases are optional. MnO2 + Fe3+ --> MnO4^- + Fe2+
Separate your answers with a comma. Show the process and each step.
Brass is a copper and zinc alloy containing 31.8% zinc by mass and having a density of 8.73 {\rm \frac{g}{cm^3}}. A fitting composed of common brass has a total volume of 335.6 {\rm cm^3}
What will happen to the retention time if the temperature of the column is increased. Calculate the following peak areas from your GC chromatogram.
Give the balanced equation for the reaction: formation of 1 mol nitrogen dioxide from its elements (heat is absorbed)
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl
Suppose you want to cook pasta in boiling, salty water. What is effect of salt (NaCl) addition to water on the boiling point temperature of the resulting solution?
An 11.0 gram sample of CaCl2(s) is dissolved in 125 grams of water with both substances at 25.0°C. If the final temperature of the mixture is 39.2 °C.
In an alternative analysis of spinach, a student adds the following to an extraction funnel: 50 mL ether, 50 mL water, 15 mL 0.1 M HCl, 0.25 g retinol (vitamin A), and 0.25 g glutamic acid, and proceeds to shake. Indicate the contents of phase A a..
A gaseous mixture contains 450.0 Torr of H2(g), 358.7 Torr of N2(g), and 65.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
The air tanks used by a certain fire department each contain 25.0 l of air at a pressure of 200.0atm and a temperature of 293 k. Assume the average fire fighter exhales 0.500l of air per breath at a temperature of 310.0 k
One mole of an ideal gas is subjected to the changes below. Calculate the change in temperature for each case
Express the concentration of a 0.0760 M aqueous solution of fluroide, F-, in mass percentage and in parts per billion
Show the product that forms when 3-phenylpropanal is allowed to mix with sodium hydroxide catalyst.
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