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Question- Calculate the mass of KHC8H4O4(molar mass = 204.23g/mol) that react with 15 mL of the 0.15 M NaOH. Express this mass KHC8H8O4 to the correct number of significant figures.
A mixture of FeO and Fe2O3 with a mass of 10.0 g is converted to 7.43 g Fe of pure Fe metal. What are the amounts in grams of FeO and Fe2O3 in the original sample
Explain why trans-p-anisalacetophenone would be expected to be more stable than the correspinding cis isomer
Number of Moles and Conversion, a) Number of moles of carbon atoms in 0.585 moles C4H10
Many household cleaning products contain oxalic acid, H2X2O4 , a diprotic acid with the following dissociation constants: , . Calculate the equilibrium concentration of C2O4^2- in a 0.20M solution of oxalic acid.
a) What must be the velocity of electrons if their associated wavelength is to equal the longest wavelength line in the Lyman series
what would the rate constant be at a temperature of 150C for the same reaction described in Part A?
A solution made up of 8.25 g of caffeine and 100.0 mL of benzene (d=0.877 g/mL) freezes at 3.03 C. Pure benzene (Kf=5.10 C/m) freezes at 5.50 C. What are the simplest and molecular formulas for caffeine
rotational absorption lines from 1h35cl gaswere found at the following wavenumbers 83.32 104.13124.73 145.37 165.89
How much ice (in grams) would have to melt to lower the temperature of 352 of water from 26 to 5. (Assume the density of water is 1.0)
Describe the nature and characteristics of PCB's. Why are they of importance to an EH&S or FS professional who encounters them when coming upon an incident scene where they are present? What precautions, or actions, should the EH&S or FS professio..
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
What is the molality of a solution consisting of 3.43 mL of carbon tetrachloride (CCl4; d=1.59 g/mL) in 78.4 mL of methylene chloride (CH2Cl2; d=1.33 g/mL)
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