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An 8mL sample of H3PO4 required 28.3mL of an 0.100 M NaOH solution at the equivalence point.
How many grams of H3PO4 were present in this sample?
3NaOH(aq) + H3PO4(aq) ------> Na3PO4 (aq) +3 H2O (l)
Liquid butane C4H10 , the fuel used in many disposable lighters, has delta Hfinal=-147.5 kj and a density of 0.579 g/ml . Use Hess's law to calculate the enthalpy of combustion in kJ/mol.
what is the equilibrium partial pressure of water vapor above a mixture of 44.0 g H2O and 56.0 g CHOCH2CH2OH at 35 Degree C. The partial pressure of pure water at 35.0 degree C is 42.2 mmHg. Assume ideal behavior for the solution.
Calculate the composition of the exhaust gases in kg/hr and calculate the percentage of benzene that is partially combusted.
What volume (in mL) of water must be added to a 1.133 M solution of sodium chloride to make a 52.4 mL of a 0.52024 M solution? Assume the volumes are additive.
Question- Calculate (a) specific volume, (b) enthalpy, and (c) humidity ratio for moist air at 21 C and relative humidity of 30%, at a barometric pressure of 755 mm Hg
Consider an ordinary 8 fluid oz. glass of water (H2O). Suppose, hypothetically, that all of the water molecules in the glass could be marked.
Which of the following compounds will yield 1-hexanol when treated with butylmagnesium bromide followed by acid workup? 1-hexanol
Aluminum readily displaces hydrogen in sulfuric acid according the following balanced reaction: 2Al(s) + 3H2SO4(aq) = Al2(SO4)3(aq) + 3H2(g). How many moles of Al and how many moles
State A 130.0 mL sample of a solution that is 2.9×10-3 M in AgNO3 is mixed with a 220.0 mL sample of a solution that is 0.10 M in NaCN. Subsequent to the solution reaches equilibrium, Explain what concentration of Ag+(aq) remains
what would be the effect on this experiment if the student Aceton +benzaldehyde ----> dibenzalacetone a. added half the amount of benzaldehyde?
Four materials (A, B, C, D) have approximately equal melting points. All possible combinations of two of the four solids were prepared by combining equal amounts of each solid.
what is the energy of the light emitted in joules when an electron falls from the n=4 to the n=2 orbit in the hydrogen atom ? (E2= -328 kJ/mol , E1= -82 kJ/mol)
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