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A mixture of SO2 and SO2O2 and SO3 at 1000k contains the gases at the following concentrations [SO2]=5.0e-3 mol/L [O2]=1.9e-3 mol/L and [SO3]=6.9e-3 mol/L is the reacton at equilibrium. If not which
Why must all the lines in the hydrogen spectrum between 2500 A and 7000 A belong to the Balmer series
What type of solid (e.g., molecular or metallic) would you expect each of the following substances to form (and explain why): (i) HCOOH; (ii) CaF2; (iii) Xe; (iv) K; (v) SiC; (vi) NH4Cl; (vii) MgO.
What physical properties affect the rate at which a liquid drains out of a container through a small hole? Explain your answer.
Dimethyl ether and ethanol are structural isomers of C2H6O. Which one will have a higher boiling point? Explain why and do the same for their melting points.
Calculate the amount (mL) needed of a 4.0 M phenylmagnesium chloride in THF solution to give 1.5 equivalents based on the amount of starting material used. Starting material needed
(i) Arrange the following compounds in the order of increasing melting points: (a) He, (b) NH3, (c) LiBr, (d) Ar, (e) CsBr, (f) PH3, (g) CsI, and (h) RbBr.
What volumes of 0.150 M acetic acid and 0.065 M NaOH solutions must be mixed to prepare 1.00L of a buffer solution of pH 4.50 at 25C.(Show all work for 5 stars)
Why is the dissolving of salt sometimes an exothermic and sometimes an exothermic process
Volume of water used, mL: 75.0ml Initial temperature of water: 23.4 degree celsius Mass of salt taken, g: 5g Moles of salt taken, mol: 0.0625mol Highest/lowest temperature,: 24.0/20.1 Calculate heat
The student adds 6 M NH3 to CuSO4 solution until the Cu 2+ ion is essentially all converted to Cu(NH3)4 2+ ion. The voltage of the cell goes up to 0.92 V and the Cu electrode is still negative. Find
The neutral OH molecule has been implicated in certain ozone-destroying processes which take place in the upper atmosphere. a.) Assuming the electron added to OH is entirely localized in a single at
(i) Arrange the following compounds in the order of increasing melting points: (a) He, (b) NH3, (c) LiBr, (d) Ar, (e) CsBr, (f) PH3, (g) CsI, and (h) RbBr. (ii) Separately, also arrange these compou
Electron affinity can be defined for molecules just as it is defined for single atoms. Write a complete chemical equation representing the electron affinity of OH. Include all relevant state symbols
A 1.27 g sample of a gaseous oxide of nitrogen occupies a volume of 1.07 L at 25°C and 737 mmHg. What is the most likely formula for the gas. A. NO2 B. N2O C. NO D. N2O4
Mass(volume)of cold water:75.0g Temperature of cold water: 23.0 degree celsius Mass(volume) of hot water: 75.0g Final temperature: 41.1 degree celsius find the temperature change and the calorimeter
What effect on the calorimeter constant calculated would be observed if the calorimeter cup were made of a conducting material(such as metal)rather than plastic foam
what is the total pressure in the reaction flask at the end of the reaction? What are the partial pressures of the gases in the flask? 4A(g) + 6B(g) ? 2A2B3(g)
Calculate the partial pressure of water at 23.6 Celsius by interpolation from the vapor pressure table.
A unit of heat energy that was formerly used frequently calorie. Look up the definition of calorie in your textbook or a handbook and record it here.
The linear molecule FeH2 has been observed in the gas phase. Assume that the iron atom can potentially use s, p, and d orbitals to interact with the hydrogens. If the z axis is collinear with the mo
Nitrogen monofluoride, NF, can serve as a ligand in transition-metal complexes. a. Prepare a molecule orbital energy-level diagram of the NF molecule, showing clearly how the atomic orbitals interac
What is the pKb for the acetylsalicylate (C9H7O4-) ion in a 0.10 M solution of sodium acetylsalicylate (NaC9H7O4). A. 3.52 B. 10.48 C. 3.0 x 10-4 D. 3.0 x 10-11 E. 8.26
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 50.0 g of ammonia gas using air as your source of nitrogen gas, what volume of air is required if the air is introduced