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Assume a bowl of 600 g of water is placed in a microwave oven that puts out 888 watts (J/s). How long would it take in seconds to raise the temperature of the water from 12.0 C to 43.1 C
Calculate the (a) weight fraction (b) mol fraction (c) mol percent of each component (d) mass of 5 moles of the mixture.
find the change in the fraction of visibility for a person from planet krypton with x-ray vision in addition to visible
How many moles of methanol are present in a 150.0 gram sample of methanol,CH3OH
In a precipitate lab, if the step for digesting the precipitate were omitted, what would be the probable consequence of reporting the "percent limiting reactant" in the salt mixture? Explain.
A soft drink contains 35 mg. of sodium in 315g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
The combustion of how many moles of ethane C2H6 would be required to heat 587g of water from 25 degree to 78 degree. ( assume liquid water is formed during combustion.)
The voltage across the leads of a glass pH-reference combination electrode immersed in a solution of pH 8.00 was 133 mV. Calculate the expected voltage if the pH of the solution is raised to 9.00
Into what type of unit cell (i.e., simple cubic, face-centered cubic, or body-centered cubic) does this material crystallize? Be sure to fully support your answer. The apparent atomic mass is 120.5 amu. Remember that 1 amu = 1.660538783 × 10!24 g.
The density of an 40.0% w/w ethanol (C2H5OH) solution is 0.935 g/mL. What mass of ethanol does 225.0 mL of this solution contain
What is the strongest attractive force that must be overcome in order to do the following: a) melt pure solid phosphorus pentachloride b) boil pure liquid selenium tetrafluoride
Calculate individual concentrations in an unknown mixture. Calculate the individual concentrations of C and of D in the following unknown mixture: Compound C: Absorbance at 365nm = 0.150 Absorbance at 470nm = 0.642 Concentration = 1.00 X 10^-4 Com..
Draw structural formulas and complete. Write the names under the products and indicate the major one. Show the reaction mechanism for the reaction in 3b. Use Lewis structures and curved arrow notation.
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