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A piece of copper metal which is having 36.0 g initially at 100 degree C. It is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 20.0 degree C.
Now you amke decision to add the fee of $206 per tour group regardless of size. Find smallest number of people who have to go on the tour for you to build $700?
A solenoid having a cross-sectional area of 1.88 x 10-3 m2 is 0.793 m long and consists of 430 turns per meter. Determine the induced emf in this solenoid when the current in it is raised from 0 to
Calculate the Ka value measured by the student if the pH of the solution was 2.61? Aspirin (acetylsalicylic acid, C9H8O4) is a weak monoprotic acid. To determine its acid-dissociation const
We pull one of the balls back till its string makes an angle of 37° with the vertical and let it go. This collides elastically with the other ball. i) Determine how high will the other ball go u
-56.2kJ/mol. A quantity of 4.00x102 ml of 0.600M HNO3 is mixed with4.00x10 2 ml of 0.300M Ba (OH)2 in a constant -pressure calorimeter of negligible heat capacity. The init
Ball A of mass 10 kg) makes a head-on, elastic collision with ball B that is initially at rest. As a result of the collision, ball A rebounds with a speed equivalent to one-fourth its original spee
Calculate the empirical and the molecular formulas of the compound. Elemental analysis of 5.000g of a compound showed that it contained 0.318 g of hydrogen, 1.278 g of carbon & the 3.404g of sul
A generator is designed to generate a maximum emf of 140 V while rotating with the angular speed of 3600 rpm. Each and every coil of the generator consists of an area of 0.039 m2.
Express the work of isothermal reversible expansion of a van der Waals gas in reduced variables and identify the definition of reduced work that makes the overall expression independent of the ident
Discuss why might one obtain a percent yield less than 100% when reactions will be carried out, copper metal added in the 1st reaction will limit the amount of copper(I) Chloride that forms in
(i) Is it possible that the two-object system has a final net momentum of zero after the collision? (ii) Roughly, determine the direction of the final net momentum of the two-object system after the c
Determine the final temperature (oC) of sample which is having a 28.3 g of copper originally at a temperature of 50.1 oC that has a temperature change of -38.7 oC.
Discuss what velocity must a 20.0 g object be moving to possess a kinetic energy of 1.00J? Demonstrate the formula, what each number means, and how to solve?
At 440 nm the molar absorption coefficient of a solute is 423dm3mol-1cm-1. When the light of that wavelength passes through a 6.50 mm cell containing a solution of the solute, 48.3 percent of the li
A young girl having mass 40.0 kg is sliding on the horizontal, frictionless surface having an initial momentum which is due east and that consists of a magnitude of 90.0 kgm/s. Beginning at, a total
Determine the partial pressures of neon and helium after the stopcock is open. The temperature remains at a constant16°C.
Determine the de Broglie wavelength associated with a mount raveling at a velocity of 8.60×105 cm/s? The mount has arrest mass 206.8 times that of an electron.
Determine the phase difference among the Huygens wavelets arriving at point P from the top and mid-point of the slit?
Does the frequency increase or decrease if centrifugal distortion is considered? Determine the frequency and wave number of the J = 2 ← 1transition in the pure rotational spectrum of12C16O. Th
A single conducting loop of wire consists of an area of 6.3 x 10-2 m2 and a resistance of 110 O. Perpendicular to the plane of the loop is a magnetic field of strength 0.18 T. Determine at what rate
Determine the maximum non-expansion work per mole that may be obtained from a fuel cell in which the chemical reaction is the combustion of methane at 298K.
If he accelerates from a stoplight, the tassel deflects backward toward the rear of the car at an angle of 5.86 degrees relative to the vertical. i) Determine the tension in the string holding
Demonstrate a full mechanism for the racemization, with a sentence or two among each line explaining the movement of electrons when optically active 2-methyl-1-phenyl-1-butanone undergoes reaction w
When 5 drops of 0.10 M NaOH were added to 20 mL of the buffer in the previous question, the pH went from 3.39 to 3.42. Write down an ionic equation to explain why the pH did not go up much higher.