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A scientist conducts an experiment to determine the rate of NO in formation in the reaction
N2(g)+O2(g)-->2 NO(g)
If the initial concentration of N2 was 0.500 M and the concentration of N2 was 0.450 after 0.100 sec, what is the rate of the reaction?
A. .500 M/s
B. 1.00 M/s
C. 5.00 M/s
D. 10.0 M/s
A gravimetric method for Al was found to give results that are constantly low by 0.70 mg Al. Calculate the parts per thousand error when 750 mg sample containing approximately 12% Al is analyzed by this method.
the substance B. Both are liquids at room temperature. Which of the statements are true for these liquids under the same conditions of temperature and pressure?
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) ->2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced g of calcium and g of fluorine. If the second sample produced 294mg of fluorine, how many g of calcium were formed.
Suppose that instead of a grignard reagent with CO2 you added benzophenone (C6H5COC6H5) to the prepared grignard reagent. What product would you form?
acetic acid has a Ka value of 1.8x10^-5. How many grams of NaC2H3O2 would have to be added to 100 ml of .1 M HC2H3O2 to prepare a buffer with a pH of 4.5?
This solution is allowed to cool to room temperature and then placed in an ice bath. What is the theoretical maximum percent recovery
How many mL of each solution should be diluted to 500 mL to make 0.100 M reagent?
calculate the temperature change in the water upon complete melting of the ice. hint determine how much heat is
If I have 2 mM of pyrene in decane, how do I make 10 uM, 0.5 mM, 1.0 mM, and 1.5 mM solutions using the density of decane (0.73 g/mL)
Why does a pure enantiomer have a lower melting point range than the racemic mixture?
A 100.0-g sample of copper is heated from 10.0°C to 100.0°C. a) Determine the number of calories needed. (The specific heat of copper is 0.0921 cal/goC).
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