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Say you removed an ice cube at -10 ºC weighing 36 g from your freezer. Now you place the ice cube in a 90 g sample of liquid water at 20 ºC in an insulated (thermally isolated) container. Describe the final state of the system in terms of number of moles of ice and number of moles of water and the final temperature.
In order to characterize this by product an alert student suggested trying to dissolve the by product in aqueous NAHCO3. The by product readily dissolved. Suggest a possible structure for this compound. Explain how it Might have been formed and su..
The concentration of sugar (glucose, C6H12O6) in human blood ranges from about 80 mg/100 mL before meals to 120 mg/100 mL after eating.
If 975g of copper is heated from 20 degrees C to 80 degrees C what amount of heat is absorbed?
A particular brand of gasoline has a density of 0.737 at 25C . How many grams of this gasoline would fill a 13.3 tank?
what are the techniques used to isolate pure chemical substances from their natural sources? explain please.
Hydrochloric acid is added to zinc. How many mls of 0.500 M HCl are needed to react completely with 25.0 g of zinc metal
how many moles of C3H8 need to react to release 5280 kJ of energy?
A balloon holds 2.5 liters of helium at a temperature of 25C and 1 atmosphere of pressure. What volume will the balloon have after it rises to where the atmospheric pressure is 0.8 atmosphere and the temperature is -10C
What is the mass of 3.20 moles of magnesium chloride,MgCl2 ? Express your answer with the appropriate units. mass of MgCl2 =
Considering the condensation of a vapour only on cold vertical tubes, what factors affect the prediction of the value of the heat transfer
An Nd:YAG laser emits photons at 1064 nm in a pulse of 5.0 ns duration with a total energy of 300 mJ. What is the power (energy per time) associated with such a pulse. How many photons are emitted in such a pulse.
60.0 mL of a 0.450 M solution is titrated with 0.570 M . Calculate the volume of required to reach the equivalence point.
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