Calculate the molality, molarity of the ethanol solution
An aqueous solution of etanol, C2H5OH is 19% ethanol by mass and has density of 0.9700gml. Calculate the molality, molarity of the ethanol solution.
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When you see a traffic light turn red you apply the brakes until you come to a stop. If your initial speed was 12m/s, and you were heading due west, what was your average velocity during braking? assume constant deceleration.
Suppose 317 mL of 4.14 M HCIO4 Solution is added to enough water to make a total of 7.70 L. What is the molarity of HCIO4 in this new solution?
A ship sets out to sail to a point 107 km due north. An unexpected storm blows the ship to a point 126 km due east of its starting point. In what direction (as an angle from due east, where north of east is a positive angle) must it now sail to re
How to derive the constitutive expression for stress in a Newtonian fluid. How to derive Navier-stokes equation for compressible, incompressible, and invicid flows?
A volume of 12.66 mL of 0.1090 M NaOH solution was used to titrate a 0.771 g sample of unknown containing HC3H5O3. What is the percent by mass of HC3H5O3 in the unknown?
A certain loudspeaker has a diameter of 44 cm. At what frequency will the wavelength of the sound it emits in air be equal to its diameter? Figure out the answer in Hz, but do not enter units. (Note: If the wavelength is large compared to the diam
A pulp and paper machine has a roller that has a mass of 350 kg and a mass moment of inertia about its centre of rotation of 40 kgm 2. How long will it take a torque of 20 Nm to accelerate the machine from 0.85 to 2.5 revolutions per second?
Four ice cubes at exactly 0 having a total mass of 53.0 are combined with 115 of water at 74 in an insulated container. If no heat is lost to the surroundings, what will be the final temperature of the mixture?
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