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A 13 mL sample of a solution of AlBr3 was diluted with water to 25mL. A 15 mL sample of the dilute solution was found to contain0.045 moles of Br-. What was the concentration of AlBr3 in the origin
A proton (m = 1.67 × 10-27 kg, q = e) is sent from far away and impinge directly on a Zirconium nucleus (Q = 40e). The proton's initial speed is 5.0 × 105 m/s. What is the proton's dista
A man used enough energy to go from Aardvark to Beeville. On the first day he traveled 1/3 of the distance. On day two he traveled 1/2 of the remaining distance.
A0.032-M aqueous sample of species "X" was analyzed by atomic absorption spectroscopy at 525 nm and in a 1.00-cm celland yielded a %T value of 32.57% .
He was supposed to travel due north for 4.8 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 45° north of due east. (a) How far must he now travel to reach base cam
How many grams of hydrogen gas were released by the reaction of 1.00g of aluminum with excess potassium hydroxide solution?
What must the charge (sign and magnitude) of a particle of mass 1.47 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 700 N/C? Use 9.81 m/s^2 for the m
A rock is tossed straight up with a speed of 24 m/s. When it returns, it falls into a hole 9 m deep. What is the velocity of the rock when it hits the bottom of the hole?
A cart is propelled over an xy plane with acceleration components ax = 4.0 m/s2 and ay = -2.0 m/s2. Its initial velocity has components v0x = 8.0 m/s and v0y = 10 m/s. In unit-vector notation, what
Calculate the vapor pressure lowering of water when 5.67 g of glucose, C6H12O6, is dissolved in 25.2 g of water at 25 ºC. The vapor pressure of water at 25º C is 23.8 mmHg.
If the wire, which is fixed at both ends, vibrates at its fundamental frequency, the sound wave it generates excites the second vibrational mode of the tube of air. What is the tension in the wire?
An amount of sucrose (a nonelectrolyte, 342.30 g/mol) is dissolvedin 233.0 grams of water that increases the boiling point by 1.90oC. How many grams of the sucrose were added to the purewater?
Compute the boiling point of 3.0L of water that has 1.5 grams of lithium fluoride dissolved in it. Compute the freezing point depression for the same solution. The enthalpy of vaporization of wate
Find the magnitude and direction (relative to due east) of the displacement that the duck undergoes in 4.0 s while the forces are acting.
When the bungee jumper is reaching the end of his cord, he begins to slow. While slowing down the direction of his velocity is up or down? How about the direction of his acceleration?
A group of students brought a six pack of beer to thebeach in Fortlauderdale, FL. The six pack is placed in a coolerfilled with 1000g of ice and 4000g of water ( T=0°C ). When will the beer achi
Many cigarette lighters contain liquid butane,C4H10(l). Using standard enthalpies of formation, calculate the quantity of heat produced when 5.00g of butane is completely combusted in air under stan
A thunderstorm drops half an inch of rain (which is about 1.27cm) on Chicago which covers are area of about 228 square miles (1 mile = 1.609 km) If a typical raindrop is considered to be a sphere wi
In very hot, humid climates, such as those in tropical jungles,surface water is usually not safe to drink. A military campaign insuch a place.
A proton moves at 4.40 x 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.00 103 N/C. Ignore any gravitational effects. (a) Find the time interv
A chef at a restaurant ( elevation= 9500ft ;Patm=535 mm Hg) asks you how long she must boil an eggto satisfy a customer (from sea level) orders a "3-minutes" boiledegg? what is your answer?
A 2.2 kg ball is dropped from the roof of a building 130 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 12.0 N on it. (a) How far from the building does the
Sitting in a second-story apartment, a physicist notices a ball moving straight upward just outside her window. The ball is visible for 0.23 as it moves a distance of 1.16 from the bottom to the top
When we perform the silver nitrate test.which five anions will combine with silver ion to form in soluble precipitates? how will recognize this when it happens?
A vector Force (F1) has a magnitude of 2.0 N, and directed due East is exerted on an object. A second force exerted on the object is vector force (F2)= 2.0 N, due north. What is the magnitude and di