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Determine the numbers of grams of KOH must be added to 0.500 L of buffer to change the pH by 0.15 units.
If the block is released it slides all along the surface a distance of 0.9 meters measured from the initial position of the block prior to coming to rest. Determine the spring constant K for the spr
At 21.5oC when 40.0 mL of 0.200 M HCl is added to the 40.0mL of 0.200 M NaOH also at 21.5oC in a coffee-cup calorimeter, the temperature of the resulting solution rises to22.8oC.
The third stick is positioned so that one end is on the x axis at x = 0.550 m, and the other end is on the y-axis at y = 0.835 m. Compute the location of the center of mass of the meter sticks. Ente
Liquid octane (C8H18), (density = 0.702 g/mL) can be used as a fuel. The heat of combustion of octane is -5.45 x 103 kJ/mol. Explain how much heat energy in MJ will be released by the combus
Steel train rails are laid in the 11.5 m long segments positioned end to end. The rails are laid on a winter day if their temperature is -1.0. When the rails are originally laid in contact, determin
At a temperature of 26.20 C a sample of nickel weighing 425 grams was initially. It needed the 975 Joules of heat energy to increase the temperature to 31.55 C. Calculate the specific heat of the n
A solid ball and a hollow ball, each having a mass of 1.31 kg and radius 0.283 m, begin from rest and roll down a ramp of length 3.65 m at an incline of 25.7°. Determine the speed of the solid b
Calculate the molar mass of a gas which has a density of 5.75g/L at 25.0 C and 1.00 atm pressure and demonstrate the formula of the molar gas.
Determine the numbers of moles of O2 (molar mass=32.00g/mol) are required to react totally with the 52.0 L of CH4 (g) at STP to form CO2 and H2O? (Molar mass of CH4-16.04g/mol)
Determine the maximum wavelength of a gamma ray which could break a deuteron into a proton and a neutron? (This method is termed photodisintegration.)
Assume the bottle of wine at the room tempature of 72oF is placed in refrigerator that is 40oF AND K=0.4. Determine tempature of wine, to nearest degree, after five hours in refrigerator?
Would this be true because at boiling point the liquid is in dynamic equilibrium with the pressure of the atmosphere? The two liquids have identical vapor pressures at their normal boiling points.
The left end of the rod is supported by a hinge, and the right end is supported by a thin cable forming a 30.0° angle with the vertical. (i) Determine the tension T in the cable. (ii) Determine
Compute the final speed of the second car. Write your answer in units of the initial speed (that is, as a fraction of v). Is this collision inelastic or elastic?
Determine number of different sets of radio station call letters which are possible in United States. Determine number of different sets of radio station call letters which are possible if call letter
Electrons are accelerated in the picture tube of the television via a potential difference of 8.00 x 10^3 V. (Employ the values q = 1.60 x 10^-19 C and m = 9.019 x 10^-31 kg) i) Determine the change
A block of cheese of 0.27 kg lies on the floor of a 900 kg elevator cab which is being pulled upward by a cable through distance d = 3.0 m. If the normal force on the block from the floor has consta
A cylindrical metal can having a radius of 4.25cm is floating upright in the water. A rock is positioned in the can, causing it to sink 0.0232m deeper into the water. Determine the weight of the roc
A bicycle and its rider altogether consists of a mass of 83 kg. Determine what power output of the rider is needed to maintain a constant speed of 4.8 m/s (around 10.7 mph) up a 5.0% grade (a road
If the earthquake has the magnitude 6.1 on Richter scale, determine magnitude on Richter scale of the earthquake which has the intensity 40 times greater? Find the equation 10x = 40.
Three air carts encompass masses of 4m, 2m, and m. 4m consists of n initial speed of 0. The remaining two carts are at rest primarily. All carts encompass spring bumpers which give elastic collisio
Let, consider a point P on a viewing screen on which the diffraction pattern of the slit is viewed; the point is at 30° from the central axis of the slit. Determine the phase difference between
Production schedule needs that at least 240 units of 8 inch pliers and at least 140 units of 6 inch pliers should be made during each 10 hour day. Which combination of machines will cost least money
When the atom doesn’t collide with any other atoms or molecules, then how high up would it go before coming to rest? Suppose that the acceleration due to gravity is constant throughout the asc