Determine the melting point of a compoundand
Suppose you are trying to determine the melting point of a compoundand the compound turns from white to brown before melting. Whathappened and how would you correct it? What if the compound slowly disappeared from the capillary tube before melting?
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The system is initially at 20°C. Then 112 mL of water at 80°C are added to the calorimeter vessel. When thermal equilibrium is attained, the temperature of the water is 54°C. Determine the specific heat of the block. (cal/g·K)
Adipic acid and citric acid have very similar melting points. Given two unknown samples, one being citric acid and the other adipicacid, how could you determine which was without using spectroscopy?
What is the coefficient of static friction between the tires and the road? For the same scenario but on a 10 degree downhill slope, what distance is required to come to a stop? Use the value of mu you calculated in part a.
What is the 99% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Enter your answers accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).
Suppose you are trying to determine the melting point of a compoundand the compound turns from white to brown before melting. Whathappened and how would you correct it?
What is the rate of change of the resistance with temperature (dR/dT) at the ice point and the steam point?
How many mL of boiling water are required to dissolve 92.0 g ofphthalic acid?(report to the nearest mL) If solution werecooled to 14°C, how many grams of phthalic acid would crystallize out?
Elemental sulfur occurs as octatomic molecules, S8. What mass of fluorine gas is needed for complete reaction with 293.89 gsulfur to form sulfur hexaflouride?
If the engines run for 10 seconds, What is the final velocity of the probe? What distance did it travel while the engines were on?
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