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Mixing 20.0mL of a 3.00 M sugar solution with 30.0mL of a 5.00 M sugar solution results in a solution with what molar concentration?
a hypothetical ax type ceramic material is known to have a density of 2.10gcm3 and a unit cell of cubic symmetry with a
What is the magnitude of the change in pH when 1.8 g of NaOH is added to 1.00 L of a solution that is 0.100 M in NH3 and 0.100 M in NH4Cl?
How many atoms are contained in a block of aluminum metal measuring 6 mm x 8 mm x 18 mm. The density of aluminum is 2.7 g/cm3.
Calculate the volume of these ten ball bearings in liters (L). In performing the calculation, present your work as unit conversions, and report your answer to the correct number of significant figures.
the water for the pan is not saturated with CO2. Will the reported percent CaCO3 in the original sample be too high, too low, or unaffected? Explain
It is important that the flask used for molar mass determination is completly dry before adding volatile liquid unknown to it.why? what would happen to any droplets of wash-water remaining in the flask when the temperature of the flask is raised t..
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
How much energy must be supplied to break a single 21Ne nucleus into separated protons and neutrons if the nucleus has a mass of 20.98846 amu. What is the nuclear binding energy for 1 {\rm mol} of {\rm ^{21}Ne}
The rate constant for a certain reaction is k = 1.50×10?3 s^-1 . If the initial reactant concentration was 0.650M , what will the concentration be after 13.0 minutes?
At a winery, glucose (C6H12O6) in grapes undergoes fermentation to produce ethanol (C2H6O) and carbon dioxide. C6H12O6 ---> 2C2H6O + 2CO2A: How many moles of glucose are required to form 128g of ethanol?
Calculate the oxygen content of the plasma in mM! 1 ml plasma dissolves 24 uL oxygen at 38 degrees C if the partial pressure is 103 kPa.
what is the PKa for the acid HA if a solution of 0.65 m and 0.85 M NaA has a PH 4.75
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