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Adult and child in 1m wide revolving door. Adult pushes to get through door but the child counteracts by pushing in the middle with 50N. Friction causes a torque of 25Nm. What is the minimum magnitude force needed for the adult to make the door rotate?
If the vinegar were measured volumetrically (e.g., a pipet), what additional piece of data would be needed to complete the calculations for the experiment
Finding Literature Values for Atomic Line Spectra in gas discharge tubes
A CONTAINER HOLDS 7.62L OF N2O(g) at 4.06atm in equilibrium at 25C with 5.82L of an aqueous solution of N2O(aq).
What is the value of the equilibrium constant for the neutralization of acetic acid with sodium hydroxide? The Ka for acetic acid is 1.8 ? 10-5 and the neutralization reaction of interest is CH3CO2H(aq) + NaOH(aq) -> H2O(l) + NaCH3CO2(aq).
The temperature of Beaker X = 75°C and the temperature of Beaker Y = 50°C after Five minutes . determine the temperatures be after another 5 minutes have passed?
You measure water in two containers a 10-mL graduated cylinder with marks at every mL, and a 1mL pipet mareked at every 0.1mL. If you have few water in each of the containers and add them together, to what decimal place could you measure the total
A 0.20M of acetic acid, CH3COOH, at a temperature of 25degC has pH of 2.73. Calculate the hydrogen ion concentration
A 3.00-L flask is filled with gaseous ammonia,NH3 . The gas pressure measured at 20.0 deg C is 2.05 atm . Assuming ideal gas behavior, how many grams of ammonia are in the flask?
What is the concentration of Cu2+ in the other half-cell. (Assume the concentration in the unknown cell to be the lower of the two concentrations.)
Come up with guess as well as then confirm a mechanism that is consistent with the experimentally found reaction rate for the subsequent reaction- 2A+B -> A2B
The mole fraction of propane in the vapor phase is 0.67 and 0.40 in the liquid phase. Additional pure propane is added to the system and the system is brought again to equilibrium at 10 bar and 323 K. What is the effect of the propane addition on ..
Consider treating polyenes, ethylene, butadiene, hexatriene etc., with the one-dimensional particle-in-the-box model. What length polyene that is number of C atoms is required to absorb light in the red region of the spectrum. Explain how does tha..
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