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When a 18.5 g piece of copper originally at 99.5C is placed in 58.5 g of water at 24.0C, the temperature of the water rises to 26.1C. If the specific heat of water is 4.180 J , calculate the specifi
Draw the substitution products from the reaction of (R)-2-chloro-2-iodopentane with ethanol in the Fisher projection with the lowest priority group on a vertical bond
What is the change in internal energy (in J) of a system that releases 840 J of thermal energy to its surroundings and has 119 cal of work done on it? can you show work please the anser is -342
What mass of each will be present in the air assuming the liquid and vapor are in equilibrium? The vapor pressures at 300 K are 3.2 kPa, 13.1 kPa, and 0.23 kPa respectively.
The second is defined as the time it takes for 9,192,631,770 wavelenght of a certain transition of the cesium-133 atom to pass a fixed point.
What are the sources of error that could happen in the experiment of ''dumas method for determining the molecular weight of volatile liquids''
A conical pendulum is formed by attaching a 0.90kg ball to a 1.0m -long string, What is the ball's angular velocity, in rpm
The centers of a 7.0kg lead ball and a 140g lead ball are separated by 13cm. What gravitational force does each exert on the other
Jim's dog Sparky runs 55.0m northeast to a tree, then 70.0mwest to a second tree, and finally 20.0m south to a third tree
A flat sheet of paper of area 0.260{\rm m^{2}} is oriented so that the normal to the sheet is at an angle of 54^\circ to a uniform electric field of magnitude 18{\rm N/C}. Find the magnitude of the
In the oxidation of ammonia to form nitrogen oxide; 4NH3 + 7O2 ---> 4NO2 + 6H2O, water is formed at an instantaneous rate of 42 mol L-1 s-1. A.) What is the normalized reaction rate? B.) At what
the double bond electrons will act as the nucleophile in the first step of the reaction. 2. the halide ion will act as the nucleophile in the second step of the reaction.
A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 6.00 cm. find the average frictional force that stops the bullet
Hydrogen gas effuses at a rate 4.5 times that of an unknown gas under the same conditions. What is the molar mass (g/mol) of the unknown gas
What is the molarity of a solution made with 2.4g if LiOH (molar mass = 23.9g/mol) dissolved to make 1.5L of solution? I want to know how to set up the formula for this problem
Using the Nernst Equation, calculate the voltage for a concentration cell with: Cu (s)| 0.01 M Cu2+|| 1.0 M Cu2+| Cu (s)
An RLC circuit consists of a 48 ohm resistor, 240 micro farad capacitor, and an inductor. What is the inductance
A 668-kg elevator starts from rest and moves upward for 4.30 s with constant acceleration until it reaches its cruising speed, 1.65m/s. What is the average power of the elevator motor
Please help me solve this problem: The electric motor of a model train accelerates the train from rest to 0.600 m/s in 33.0 ms. Find the average power delivered to the train
Suppose a 29.5 kg child sits 1.89 m to the left of center on the same seesaw as the problem you just solved. Find the mass of the second child
Please solve this problem for me: A large cruise ship of mass 7.00 107 kg has a speed of 10.0 m/s at some instant. How much work is required to stop it
A person pushes a 20 kg shopping cart at a constant velocity for a horizontal distance of 22 m. What is the work done by the gravitational force
If a discus thrower rotates through the last 46 degrees of a turn in 0.11 seconds and the distance from the axis of rotation to the center of the discus is 1.22m
During a drive by golfer, the angular velocity of his club is zero at the top of the backswing and 34 rad/s at the bottom of the downswing just before impact with the ball, what is the average angul