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Design a variable resistance rowing exercise machine that has a direct digital readout of the instantaneous energy expenditure rate of the user. This means you have to specify or design transducers that measure the instantaneous work rate (i.e., power) done on the machine. This power can be absorbed by the machine either electrically or mechanically.
Provide assembly and detail drawings of your design plus specify all the electronics necessary to process the transducer signals and provide the proper digital output.
Aluminum metal shaving (10g) was placed in 100mL of 6.00M hydrochloric acid. What is the mass of hydrogen gas that can be produced. 2Al (s) + 6HCl (aq) -----> 2AlCl3 + 3H2 (g)
Kc=3.5x10-2. If you start with 15.0 mL of a 0.895 M solution of NaIO4, and the dilute it with water to 260 mL, what is the concentration of H4IO6 at equilibrium
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
Using the same assumptions and approximations you used in lab, determine the molar enthalpy change (in kJ/mol) for the reaction below, assuming that CH3CO2H dissociates completely in water.
Its undissociated form is red and its anionic form is yellow. What color would a methyl red solution have at pH = 7.0 ? Show your calculations. Hint: Determine the concentration ratio of methyl red and its conjugate.
What is the molality of ethanol in a solution made by dissolving 14.6 g of ethanol, C2H5OH, in 53.6 g of water?
What is the vapor pressure at 75 degrees celcius of an aqueous solution prepared by the addition of 52.9 g of urea CO(NH2)2 to 178 g of water?
Methyl-m-nitrobenzoate is an excellent (identification) derivative of methyl benzoate. What are the properties of methyl-m-nitrobenzoate that makes it an excellent derivative of the starting ester
Write balanced equations to show whether any of the following compounds have differing solubility with a change in pH.
A student was given a solid for an unknown. Its melting point range was 119-121 degrees Celsius. The student has previously worked with benzoic acid, and has observed that it was a white crystalline solid with a melting point of 122 degree Celsius..
A microwave oven has a power requirement of 1250 W. A frozen dinner requires 4.0 min to heat on full power.
What potential flaw exists in treating water by UV light, given the nature of the products that are formed? Please give detailed answer.
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