Discuss how many grams of dry nh4cl need to be added
How many grams of dry NH4Cl need to be added to 2.30 L of a 0.100 M solution of ammonia,NH3, to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8x 10^-5.
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Suppose the lifetime of a particular appliance follows an exponential distribution with a mean of 10 years. What is the probability that the appliance will fail in less than 5 years?
Determine (a) the number of cycles executed per minute and (b) the energy rejected as the heat to the low temperature resevoir each cycle.
However, of the products that were not successful, 20 percent of the time market research was used. If market research is performed for a new product, what is the probability that the product is actually successful?
Two displacement vectors of magnitudes 21 cm and 79 cm are added. Which one of the following is the only possible choice for the magnitude of the resultant?
An isolated conducting sphere has a 9 cm radius. One wire carries a current of 1.000 002 0 A into it. Another wire carries a current of 1.000 000 0 A out of it. How long would it take for the sphere to increase in potential by 900 V?
Using this data, and assuming that the material behaves according to eq 1, predict the steady state creep rate that should be observed for a stress of 60 GPa at a temperature of 1150 oC.
To compare the effects on energy intake of drinking wine either before or with a meal, 11 men participated in a laboratory study. On each day of three day trial-period, participants were given breakfast in the laboratory then 3 h later returned fo
A company's construction time follows a normal distribution. The mean time to construct a building is 100 days and the standard deviation is 20 days. The construction team will receive a penalty if completion of the job exceeds 125 days. What is t
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