Calculate the concentration in the buffer
60mL of a buffer is made up by mixing 38.2mL of 0.100 Macetic acid and 21.8mL of 0.100 M sodium acetate. The buffer has apH of 4.5. Calculate the concentration [HA] in this buffer.
Expected delivery within 24 Hours
Classify the following as discrete or continuous random variables.
In testing a new drug, researchers found that 20% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that:
Determine the tangential acceleration of the car when it is halfway through the turn (i.e. 1/4 of a circle), assuming constant tangential acceleration.
A random sample of 12 joggers was asked to keep track and report the number of miles they ran last week. The responses are: 5.5 7.2 1.6 22.0 8.7 2.8 5.3 3.4 12.5 18.6 8.3 6.6. Compute the three statistics that measure central location.
In one hand you hold a 0.13-kg apple, in the other hand a 0.23-kg orange. The apple and orange are separated by 1.25 m. What is the magnitude of the force of gravity in the following situations?
Your friends respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating the acceleration of gravity 575 km above the Earth's surface in terms of g. (One g is, of course, 9.8 m/s2.)
At temperatures near 800oC, steam passed over hot coke(a form of carbon obtained from coal) reacts to form CO andH2: C(s) + H2O(g) D CO(g) + H2(g).
If the command module was at an altitude of about 98 km above the surface of the moon, how long did it take to go around the Moon once?
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