Determine the percentage gold composition of the coin
A U.S. $20 gold piece has a mass of 33.44 grams and displaces 1.935 cm^3 of water. If the coin is known to consist of only gold (Pau = 19.3 g/cm^3) and copper ( Pcu = 8.9 g/cm^3), what is the percentage gold composition of the coin?
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Andrea flew at 170 mph on a course with a bearing of 80 degree, and Carlos flew at 230 mph on a course with a bearing of 120 degree. How far apart were they after 6 hours.
A 2.00 -long, 480 rope pulls a 6.00 block of ice across a horizontal, frictionless surface. The block accelerates at 2.00 . How much force pulls forward on (a) the ice, (b) the rope?
What volume of0.330 M acetic acid is needed to reach the equivalence point in the titration of 31.2 mL of0.0480 MKOH? Write the name and the chemical formula for the salt formed during the titration.
Determine the time it takes for the electron to leave the "field-filled" region, noting that its path is a semicircle.
Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL) of 0.10 M AgNO3. What is the minimum number of grams of Cl- that must be present in order for AgCl(s) to form?
Find the radius of the circle if an arch of length 6 meters on the circle subtends a central angle of pi/6 radians. How long is the arc through which the weight moves from one high point to the next high point.
A solid metal sphere of radius a = 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b = 3.50 cm and outer radius c = 4.00 cm. The inner sphere has a net charge of Q1 = 4.70 µC, and the outer spherical shell has a n
What is the pH of the buffer after the addition of 0.0150 mol of HCl to 850. mL of buffer? You mayassume that there is no volume change upon addition of the acid.pKb(ammonia) = 4.75.
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James was recently on a date at a local sushi restaurant and began to have tremor, sweating, and increased blood pressure.
Choose a medical condition from the fluid, electrolyte, or acid-base system other than hyponatremia and explain the pathophysiological changes that may occur.
Peter is admitted to the hospital for an appedectomy. After the operation, he is released and returns home. Within a few weeks,
For this discussion, you practice conducting a Diagnostic Impression and writing up a Discussion of the Diagnostic Impression.
Prompt: The call to the nursing vocation has been attributed to religion and spiritual beliefs over the centuries.
Problem: Which action will the nurse take after administering sulfonamide to a patient?
Which class of antibacterials will the nurse anticipate being prescribed to treat a respiratory tract infection for a patient with an allergy to penicillins?