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The solubility of slaked lime, Ca(OH)2, in water is 0.185 g/100 mL. What volume of 0.00300 M HCL is needed to neutralize 14.0 mL of saturated Ca(OH)2 solution
The temperature and pressure in a star's atmosphere are 6.40 multiply.gif 106 K and 0.0260 Pa. Calculate the rms speed of free electrons
A piece of wood is 0.600m long, 0.210m wide, and 0.08 m thick. Its density is 600kg/m3. find the mass of this volume of lead
"A plane, diving with constant speed at an angle of 54.0 degrees with the vertical, releases a projectile at an altitude of 770m. what is the speed of a aircraft
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. What impulse did the athlete receive
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
An ideal gas occupies a volume of 1.8 cm3 at 20°C and atmospheric pressure. Determine the number of molecules of gas in the container
If a temperature increase from 11.0degree C to 20.0degrees C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln*k versus 1/T (in K) is linear and has a slope of -5355K . Calculate the activation energy for the reactio
A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. What maximum power must the winch motor provide
The activation energy of a reaction is 56.8kJ/mol and the frequency factor is 1.5*10^11/s. Calculate the rate constant of the reaction at 26degrees C
A reaction has an activation energy of 32 kj/mol. If the temperature of the reaction doubles from 45 to 90 degrees by what factor will the ratio of the rate constants, k2/k1,change
Draw (a) planar conformation and (b) nonplanar (chair) conformation of trans 1,4-dimethylcyclohexane.
A cart of mass 1.91kg traveling 1.29m/s inelastically strikes a stationary mass of 0.41kg. What is the total momentum of the system
A large capacitance of 1.20 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
A cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise
A block that was initially at rest is sliding on a steel surface at 0.8 m/s for .2 m. Calculate the temperature rise from friction
Conservation of Energy A 100kg skier at the top of a 2km high mountain tucks the whole thing but only gets a final speed of 50m/s
The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. What is the final number of molecules Nf after this process
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail, what is the diameter of the nail
A rod is 2.40 m long and has a diameter of 2.50 mm. What is the Young's modulus for this rod
Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by cables at each end to paint the second floor. find the force that the left cable exerts on the board
A wire loop that encloses an area of 10 cm2 has a resistance of 5 Ohms. How much charge flows past a point in the wire
A small block of mass 1.14 kg slides without friction on a horizontal table. find the torque placed on the mass by the string
Find the angular momentum of the second hand on a clock. The second hand has a length of 20.0cm and a mass of 8.0g