Write four balanced equations for the reactions
Write four balanced equations for the reactions to separate and recover m-nitroanilin, benzoic acid, and naphthalene. Write out the full structures.
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A 20.0-milliliter sample of .200-molar K2CO3 solution is added to 30.0 milliliters of .400-molar Ba(NO3)2 solution. barium carbonate percipitates.
The runner-up in a road race is given a reward that depends on the difference between his time and the winner's time. He is given 20 dollars for being one minute behind.
Predicting Membrane Protein Topology from Sequence You have cloned the gene for a human erythrocyte protein, which you suspect is a membrane protein.
When 31 g of phosphorus reacts with oxygen gas, 71 g of an oxide of phosphorus is the product. What mass of oxygen gas is needed to produce 13 g of this product? (2 significant figures).
A 260-{rm mL} flask contains pure helium at a pressure of 759 {rm torr}. A second flask with a volume of 470 {rm mL} contains pure argon at a pressure of 725 {rm torr}.If the two flasks are connected through a stopcock and the stopcock is opened,
To produce 856 g of ammonia gas using air as your source of nitrogen gas, what volume of air is required if the air is introduced at 27°C and 760 mmHg? (the mole fraction of nitrogen gas in air is 0.781)
What mass of ethanol, C2H5OH a nonelectrolyte, must be added to 10.0 L of water to give a solution that freezes at -10.0C? Assume the density of water is 1.0 g/mL. Kf of water is 1.86C/m.
At a particular temperature, N2O5 decomposes according to a first-order rate law with a half-life of 3.0 s. If the initial concentration of N2O5 is 1.0 × 1016 molecules/cm3, what will be the concentration in molecules/cm3 after 11.3 s?
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