Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
It is produced natrually from degradation of organic matter, and also anthropogenically from fuel combustion.) The acid dissociation constant, Ka for formic acid is 10-3.7. Assume T=4*C and I=0.
Determine the pH of a solution of 10-3 M sodium formate. Formate is a byproduct of microbial metabolism, and can also serve as an energy source for anaerobic bacteria
Electrons have half integer spin, ms= +-1/2. consider how the elements would be arranged if electrons had spin of ms= +-3/2. redraw the first two rows of the periodic table using this new criterion
How many grams of salicylic acid and of acetic anyhydride should she use? refer to the following reaction: 2 C7H6O3 + C4H603 -> 2 C9H8O4 + H20
In a separate experiment, an empty flask is weighed, 35.3 cm3 of the lubricating oil is poured into the flask and the flask is reweighed. If the scale reading was 124.8 g in the first weighing, what
what are the relative energies of the orbitals defined by n=4? if this atom is placed in a magnetic field, how would the relative energies of these orbitals change and why
If you have a 0.1M solution of weak acid X (pKa 3.5) and another 0.1M solution of weak acid Y (pKa 4.3), which solution would have the lower pH?
the signs of the unsquared wave functions are usually shown in plots of the squared functions. why is this so
When conducting recrystallization, the recrecrystallizing solvent must have certain characteristics (in terms of how its acts on the target sample and the contaminants)
What is the pH of a dilute solution of weak acid (pKa 5.6) with a concentration of 0.09M conjugate acid and 0.30 M conjugate base. What would the concentration of conjugate acid and conjugate base b
Which of the following compounds has the greatest Coulomb force. Which has the smallest? Enter the name of the compound.
Draw the Caryophyllene (C15H24) structure and then show how it fits the "isoprene rule" by circling the 3 isoprene units in the structure.
State the Law of Combining Volumes and provide an example of your own construction which demonstrates this law
Explain how the Law of Combining Volumes, combined with the atomic-molecular theory, leads directly to Avogadro's hypothesis that equal volumes of gas at equal temperatures and pressure contain equa
What is the final concentration of the solution made by diluting 4.0 mL of 0.0025M Fe(NO3)3 to a final volume of 10.0 mL
They have a polar end b. The have a hydrophobic end c. The are often sodium slats of long chain fatty acids. d. The hydrophilic end of the soap molecules is attracted by grease. e. they precipitate
Determine all of the term symbols for the following free atoms. Choose the ground state term in each case B N Mg V As Lu
The formulas for ethane, ethene and ethyne are C2H6, C2H4, and C2H2 respectively. Rank these compounds by the length of the carbon-carbon bond.
Using the ideal gas law, pV = RT, prove that the volume of one mole of ideal gas is a state function
The stabilization of a half-filled of shell is even more pronounced than that of the p subshell. Why
Find the maximum possible thermal efficiency and minimum possible rate of heat discard. If the actual efficiency is 60% of the maximum and the river has a flowrate of 165 m 3 /s, what is the expecte
Evaluate the number-average molar mass Mn of the polyamide, and also estimate its weight-average molar mass Mw by assuming that it has the most probable distribution of molar mass.
Neglecting the contribution of end groups to polymer molar mass, calculate the percentage conversion of functional groups required to obtain a polyester with a number-average molar mass of 24,000 g
Suppose you were given an unknown compound. Your task is to identify which compound it is using melting point data and measurements only.
Phosphorus donor atoms with a concentration of 10^16 cm^-3 are added to a pure sample of silicon. assume that the phosphorus atoms are distributed homogeneously throughout the silicon.