How many viles do you need to add to a beaker
Each vile has .8 millimoles of solute/liter in 100 microliters of solvent. How many viles do you need to add to a beaker of 100 ml of solvent to have a concentration of 10 micromoles of solute/liter?
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Steam at 100 degree C is bubbled into 0.230 kg of water at 28 degree C in a calorimeter cup, where it condenses into liquid form. How much steam will have been added when the water in the cup reaches 72 degree C? (Ignore the effect of the cup)
When 25.0 mL of 0.640 M H2SO4 is addedto 25.0 mL of 1.28 M KOH in a coffee-cup calorimeter at23.50°C, the temperature rises to 30.17°C. CalculateΔH of this reaction.
Assuming that the population is normally distributed, construct a 95% confidence interval estimate for the population mean for each of the following samples:
Determine the (a) net work input, per unit mass of air flow, in kJ/kg. (b) refrigeration capacity, per unit mass of air flow, in kJ/kg. (c) coefficient of performance.
Objects measure with masses m1=10.0 kg and m2=5.00 kg are connected by a light string that passes over a frictionless pulley. If, when the system starts from rest, m2 falls 1.0 m in 1.20 s, determine the coefficient of friction of kinetic friction
Listed below are amount of strontium-90 (in millibecquerels)insample rendomof baby teeth obtained from Pannsylvania resident bornafter 1976 (based on data from
What nucleophile could be used to react with butyl iodide to prepare the following compound? If your answer is a metal salt,omit the metal and draw the compound as an anion.
A dipole with a positive charge of 3.0uC and a negative charge of -3.0uC is centered at the origin and oriented along the x axis with the positive charge located to the right of the origin. The charge separation is 0.0010m. Find the electric field
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