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If the pure benxophenone melted at 48.1 degrees C, what is the molecular weight of the unknown compound? The Kf for benxophenone is 9.8 degrees C/m.
Imagine that you drive your car high in the mountains when you have a minor accident. How can you apply the gas laws to explain what happened with the airbag?
The pressure in container (2) was also doubled by pumping some argon into it. Did the partial pressure of He, pHe, change in these two containers?
A 122 piece of metal is heated to 285 and dropped into 84.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal?
The molecules of argon at 0 degree celsius and 1 bar of pressure. (d) what values would be obtained at 1000 degree celsius and 1 bar? (e) At 0 degree celsius and 100 bar?
A major oil company has used a gasoline additive called MMT to boos the octane rating of its gasoline. What is the emperical formula of MMT if it is 49.5% C, 3.2% H, 22.0% O, and 25.2% Mn?
Three equal point charges, each with charge 1.55 , are placed at the vertices of an equilateral triangle whose sides are of length 0.300 . What is the electric potential energy of the system? (Take
What is the mass, in grams, of 55.0 mL of the liquid propylene glycol, a moisturizing agent for foods, which has a density of 1.036 g/mL at 25 degress Celcius?
What is the energy change when the temperature of 14.2 grams of solid gold is decreased from 38.1oC to 24.1oC ?
A 180-g disk sits on a horizontally rotating turntable.The turntable makes two revolution each second. The disk is located 16cm from the axis of rotation of the turntable. What is the frictional for
A satellite is in a circular orbit about the earth at a distance of one earth radius above the surface. what is the speed of the satellite?
Find the force necessary to start the crate moving (at a 21degree angle), given that the mass of the crate is 32kg and the coefficient of static friction between the crate and the floor is 0.54.
An 86Kg person stands on a uniform ladder 4.0m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on the ladder. The wall, on the other hand, i
The organic base is extracted from 225 mL of a 0.175 M aqueous solution of B, that has been adjusted to a pH of 8.00, with 75.5 mL of ether. Only one extraction is performed. Calculate the concentra
The drawing shows three identical rods (A, B, and C) moving in different planes. A constant magnetic field of magnitude 0.45 T is directed along the +y axis. The length of each rod is L = 1.3 m, and
while john is traveling along an interstate highway, he notices a 160-mile marker as he passes through town. later john passes another mile marker, 115. a. what is the distance between town and john
What are the magnitude and direction of the electric field that will allow a proton to fall with an acceleration of 3.5 m/s2?
If only 19% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
The flask was then shaken until the solution was uniform. A 35.0-mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
A violin string that is 50.0 cm long has a fundamental frequency of 440 Hz. What is the speed of the waves on this string?
An arrow is fired with a speed of 21.0 at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into the block before coming to rest relative to it. During this p
Find the horizontal (Fx) and vertical (Fy) components of a vector with magnitude 320 N directed 110 degrees counterclockwise from the right horizontal.
Tarzan swings on a 33.00-m-long vine initially inclined at an angle of 37.0° with the vertical. What is his speed at the bottom of the swing:
what is molarity of potassium ion in a solution prepared by mixing 200ml of 0.150M potassium chloride and 150ml of 0.200M potassium salphate?
A raft is made of 10 logs lashed together. Each is 56 cm in diameter and has a length of 6.1 m. How many people can the raft hold before they start getting their feet wet, assuming the average pers