What is the minimum number of grams of cl-
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?
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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.
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?
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.
What is the pH of a buffer prepared by mixing 53.0 mL of 0.050M sodium bicarbonate and 19.6 mL of 0.10 M NaOH.(Carbonic Acid: pKa1 = 6.35, pKa2 = 10.33)
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