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A crystal was analyzed utilizing X-ray diffraction with radiation from a copper source. The observed angle was 8.60°. Find out the distance between layers of the crystal.
Calculate the pH of a solution formed by mixing 172.0 mL of 0.100 M NaF and 201.0 mL of 0.025 M HCl.
Utilize enthalapies of formation to compute the standard enthalpy of reaction for the subsequent methane-generating reaction of methanogenic bacteria, given delta Hf of CH3NH2(g) = -22.97 kJ/mol
Carbon NMR has only the following peaks: 29.8, 36.1 and 206.8 ppm. Propose a structure of this compound and explain splitting pattern and the ratio
A mixure of gases collected over water at 14 degrees celciushas a total pressure of 0.981 atm and occupies 55mL. How many grams of water escaped into the vapor state
How would you go about seperating camphor and melezitose when you only have a solvent of water and benzene
400 M formic acid (HCOOH) solution freezes at -0.758 degrees C. Calculate the Ka of the acid at that temperature. (hint: assume that molarity is equal to molality. Carry out your calculations to three sig figs and round off to two for Ka).
The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. Use the data in Appendix D to determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standard-state conditions
a sample of tap water consists of water fluoride ions calcium ions and several other dissolved ions. the ions are
standard molar entropies, S^o, in J/Kmol, are given below each reactant and product in the reaction shown below. The standard entropy of reaction, deltaS^o, for this reaction is _________J/K. S(s,rhombic)+O2(g)----SO2(g) 31.8, 205.0, 248.1 respect..
lead poisoning in children used to be treated with intravenous injections of EDTA. If the concentration fo EDTA in the blood of a patient is 2.55 x 10^-8 M and the formation constant for the complex, [Pb(EDTA)]2-, is 2.00 x 10^18
The enthalpy change at 25C and 1 atm for the complete burning of 1 mol of acetone in oxygen to give CO2(g) and H2O(l) is -1791kJ. Calculate the standard enthalpy of formation of acetone.
What is the concentration of glucose (a covalent compound) after 0.125 L of 3.00 M glucose solution is diluted to 1.50 L
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