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The solubility-product constant for Ce(IO3)3 is 3.2e-10. What is the concentration in a solution prepared by mixing 50 mL of O.0250 M Ce with 50 mL of a) 0.040 M IO3 b) 0.250 M IO3 c)0.150 M IO3
Calculate the corresponding wavelenghts (in nm) and energies (in kJ/mol) of these vibrations.
explain why only a catalytic amount of the radical initiator is required in a free radical-chain polymerization reaction
How much heat (in kJ) is evolved in converting 1.00 mole of steam at 145 C to ice at 0 C)? (The heat capacity of ice is 2.09 J/g C and the heat of vaporization of water is 32.9 kJ/mol)
Calculate the amount of heat required to completely sublime (turn from solid to gas) 25.0 g of solid dry ice (CO2) at its sublimation temperature. (the heat of sublimation is 32.3 kJ/mol)
The normal boiling point for acetone is 56.5 C. At an elevation of 5300 ft the atmospheric pressure is 630 torr. What would be the boiling point of acetone Hvap = 32.0 kJ/mol at this elevation
Silver metal crystallizes in a cubic closest packed structure. The face centered cubic unit cell edge is 409 pm. Calculate the density of the silver metal.
Estimate the density of Rb if it crystallizes in a body-centered cubic unit cell and has an atomic radius of 247.5 pm.
Use the rydberg equation to calculate the wavelength in nm of the photon when an electron in a hydrogen atom undergoes a transition from n=6 to n=2
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would
How many total moles of ions are released when the following sample dissolves completely in water. 8.47x10^-2g of Ca(NO3)2
Use electronegativity values to arrange the following bonds in order of decreasing polarity: N-O, N-N, N-P, and C-N
What is the maximum possible number of electrons in a ground-state carbon atom that have ml = 0
Calculate the volume of a 2.00 M KOH solution needed to neutralize 40.0 mL of a 0.600 M H2SO4 solution.
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
Calculate the volume of a 0.200 M NaOH solution needed to neutralize 40.0 mL of 0.600 M HNO3 solution.
A 2059-kg elevator moves with an upward acceleration of 2.0 m/s2. What is the tension in the cable that supports the elevator
During a balloon ascension, wearing an oxygen mask, you measure the weight of a calibrated 5.00-kg mass and find that the value of the gravitational field strength at your location is 9.785 N/kg.
Draw the structure for thin layer chromotography? what is it melting and boilng point, density, molecular weight and strucural formula
A 125-g piece of metal is heated to 288 oC and dropped into 85.0 g of water at 26 oC. If the final temperature of the water and metal is 58.0 oC, what is the specific heat of the metal (J/goC)
Species that have the same number of electrons are described as isoelectronic. What +2 ion is isoelectronic with Rb+ What -ion
If Amberlyst 21 has a concentration of active site of 1.25 eq/L and we want to use 100 mL of a solution, how much Amberlyst 21 should we use
What is the driving force for losing a proton as the last step in electrophilic aromatic substitution