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In the standardization of potassium permanganate why is it unnecessary to add an indicator during the titration. Why is the solution of sodium oxalate acidified with sulfuric acid before titration
Describe the incident and identify the toxic material and discuss the chemical interactions of the material(s) involved in this incident or toxic properties relevant to the incident;
what mass of naphthalene must be dissolved in 24000 grams of benzene to give a solution with a freezing point 3.00
Compound A is a clear, colorless liquid with a molecular formula of C7H10. Upon treatment of A with H2 gas in the presence of Pd on Carbon, a single product B (C7H14) is obtained.
role of sodium carbonate in extraction of caffeine from tea leaves.
In the acid-base neutralization reaction Ca(OH)2 (aq) + 2 HNO3 (aq) ---» 2 H2O (l) + Ca(NO3)2 (aq), identify a) the acid b) the base c) the salt As part of your answer, explain HOW you identified each of these components.
Which orbitals on the chlorine and iodine atoms overlap in the formation of the covalent bond in I-Cl
Explain in detail the observed absorption maxima (from the UV-vis spectrum) for the following compounds:
The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 a..
Draw the Lewis structure for each of the following molecules or ions. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
the concentration of the alkane c20h42 fm 282.55 in a particular sample of rainwater is 0.2 ppb. assume that the
How many moles of chloride were present in the unknown. d. What mass of cholride was present in the unknown? e. What was the mass percentage of cholride present int the original sample
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