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How many phases does carbon have? Carbon, like many elements or molecules has several solid phases. What are they?
Explain what is the concentration of selenium in ppm in the well water. If necessary, Presume the density of the well water is 1.00 g/ml.
Determine How many mg of a 298 mg sample remains unreacted after twenty three days if 32P decompose by a first-order mechanism, half-life = 14.3 days.
a mixture containing ironiii sulfide and ironiii chloride isreacted with hydrochloric acid.fe2s3 6hcl --gt 2fecl3
what is the pH of the HF solution before base is added. 3) What is the pH at eqivalence point. 4) what is the pH at 1/2 volume to equivalence point.
The effective nuclear charge is approximated as the total nuclear charge minus the number of core electrons. Thus, effectively, core electrons decrease the nuclear charge felt by the valence electrons because they are between the nucleus and the v..
If the surface temperature of Venus is 460 *C, define what is the wavelength maximum it emits as a black body radiator. Is this in the infrared region
a) Calculate the potential of the two cells. b) Write the overall balanced redox equations for the reactions above. c) Calculate ?G for the conditions given for reactions above.
When silver crystallizes, it forms face-centered cubic cells. The unit cell edge length is 408.7 pm. Calculate the density of silver. (Enter answer to three significant figures.)
A 1.35 m aqueous solution of compound X had a boiling point of 101.4 c. which one of the following could be compound X. the boiling point elevation constant for water is 0.52c/m A) kcl B) C6H12O6 C) CH3CH2OH D)Na3PO4 E) CaCl2
clearly draw the fatty acid 22:4w6. Based upon the structure, what is another name for this fatty acid?
For the gas-phase reaction 2 NO2 + F2 → 2NO2F, the rate constant k is 38 M-1s-1 at 27° C. The reaction is first order in NO2 and first order in F2.
A student takes 148. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
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