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An unknown amount of water is mixed with 370mL of a 6M solution of NaOH solution. A 75mL sample of the resulting solution is titrated to neutrality with 50.7mL of 6M HCl. Calulate the concentration of the diluted NaOH solution. Answer to units of M. What volume of water was added to the 370mL of NaOH solution? Assume volumes are additive. Answer in units of mL. Answer both parts to six significant digits.
Calculate the standard molar enthalpy of formation of carbon dioxide from the following enthalpy changes. 2C(s) + O2(g) --> 2CO(g) [?H0 = -221.0kJ] and 2CO(g) + O2(g) --> 2CO2(g) [?H0= -566.0kJ] What thermodynamic principle does this exemplify
In the series HF, HCl, HBr, HI, which is the strongest acid?
Consider the following equilibrium: Cu2+ + 4NH3 Cu(NH3)42+ (Kf = 4.8e+12) A solution is made by mixing 10.0 mL of 0.90 M CuSO4 and 1.50 L of 0.490 M NH3
Carbon tetrachloride, CCl4, has a vapor pressure of 213 torr at 313K and 836 torr at 353K. What is the normal boiling point of CCl4
Tell whether each of the experimental errors in excercise will affect the melting point of the unknown component.
1 the four common isotopes of sulfur have atomic masses of 32 33 34 and 35 amu respectively. draw valence diagrams of
An aerosol spray can with a volume of 456 mL contains 3.09 g of propane gas (C3H8) as a propellant. If the can is at 23°C, what is the pressure in the can? What volume would the propane occupy at STP?
The only thing that is supplied to you is 1M Tris (pH 6.8) and 1M NaCl. You have full access to all the deionized H2O you may need. Plus 3 M HCl, 40 g/mol of NaOH pellets, and a pH meter.
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution.
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
Identify the true statements regarding disulfide bridges (disulfide bonds). Include all that apply. a. Disulfide bridges are important to primary and tertiary structure, not quaternary
when pure sodium hydroxide is dissolved in water heat is evolved. in a laboratory experiment to measure the molar heat
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