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The forensic technician at a crime scene has just prepared a luminol stock solution by adding 17.0g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol?
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
It then gives off a photon having a wavelength of 1740 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
25.0mL of a 0.100M solution of NH3 is titrated with 0.150M HCl. After 10.0mL of the HCl has been added, the resultant solution is: a) basic and before the equivalence point
reacts with excess Mg to produce 4.20L of H2 gas at 745 mmHg pressure and 35 degrees celcius. What is the molarity of the HCl solution?
We know Pro can interrupt an a-helix, chemically, do you think it will cause any unusual problems in the determination of, angiotension II sequences? Explain.
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 5.60 * 10^2 cal of work done on it?
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group,
Determine the final pH of a solution that is prepared by mixing 25 mL of 0.15 M sodium hydroxide( NaOH )with 20. mL of 0.20 M HA,( a weak acid with Ka = 2.3 x 10-6)?
Predict whether the entropy change in the system is positive, negative or close to zero for each of the following processes
consider the following reaction: 2 A(g) + B(g) 3 C(g) + D(g) Please determine Kc if 6.0 moles of A is added to 6.0 moles of B in a 2.0 L yields 0.10 moles of D at equilibrium.
balanced equation for the preparation of the diazonium ion that i have made. draw possible structure for the azo dye.
The compound MgSO4 is called Epsom salts. How many grams will you need to prepare a bath containing 5.80 moles of Epsom salts? Express your answer using three significant figures.
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