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A 15.0 kg komatik sled is attached by a light cord to another 10.0 kg komatik sled. These tandem sleds are accelerated North by a dog team that apply a 175 N force to the lighter sled. The lighter sled is on ice so it has essentially no friction but the heavier sled is on rough snow (µ = 0.170) so it has some friction.
Find: a) the friction on the heavy sled. b) the acceleration of the system (both sleds are moving forward together). c) the magnitude of the tension in the cord connecting the two sleds.
Wind energy; Are there any by-products (positive as well as negative) created in the energy production? Are there limits to how the energy could be used (transportation, heating, etc)
Draw structural formulas for propanal and propanone. From these formulas, do you think that aldehydes and ketones are isomeric with each other? Show evidence and substantiate your answer by testing with a four carbon aldehyde and ketone.
An equal quantity of heat is transferred to 10.0 g samples of different substances. Given their specific heat values, rank the substances in order from least to greatest final temperature.
Explain how many moles of sodium phosphate can be made from 0.240 moles of NaOH reacting with excess phosphoric acid
Define how many ml of water density 1.0 g/ml are needed to supply the water in the alum formed from 1.1g of aluminum
Question- You are asked to go into the lab and prepare an acetic acid-sodium acetate buffer solution with a pH of 4.30 +/- 0.02. What molar ratio of CH3COOH to CH3COONa should be used
Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction: FeS(s)+6CN^-(aq)->
What will be the final temperature of a 3.5 kg block of aluminium (initial temperature = 22oC) after the addition of 2.9 kJ of energy. Specific heat of aluminium
Calculate the enthalpy change for the thermite reaction: 2Al(s) + Fe2O3(s)=2Fe(s)+Al2O3(s) ΔHrxn= -850kJ. when 12.0 mol of undergoes the reaction with a stoichiometrically equivalent amount of Fe2O3.
What absorbance would be obtained for a solution that has an absorptivity of 4700 L/mol*cm for a 1.5x10^-4 solution in a 1.0 cm cell? What would the percent transmittance (100*I/Io) be
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is doubled and that of Br- is doubled
25.0 ml of ethanol initially at 7.0 degrees c is mixed with 35.0 ml of water initially at 25.3 degrees c in an
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