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(NH4)2S is a strong electrolyte. Find out the concentration of each of the individual ions in a 0.800 M (NH4)2S solution.
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell. Make any reasonable assumption that will help you calculate the numbers
What mass of sucrose should be combined with 521 of water to make a solution with an osmotic pressure of 8.15 at 285 ? (Assume the density of the solution to be equal to the density of the solvent.)
a 0.187-g sample of a co32- antacid is dissolved with 25.0 ml of0.0984m hcl. the hydrocloric acid that is not
What stretches (presence and absence) will distinguish the product (cyclohexene) from the starting material (cyclohexanol)? Give the functional group and wavenumbers
A peptide with the amino acid sequence C-P=T-Y-R-L-D-Q (MW = 995.12 g/mol) is dissolved in this solution at a concentration of 5 micromol.
A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)
For the hypothetical first order reaction A yields products, k= 0.0206 s-1. if the initial concentration of A is 0.165 M, how long would it take for A to be 88.7% consumed
Explain are the melting behaviors of an ice cube, table sugar and table salt. Explain is there any structural information that could account for these behaviors
Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In the laboratory, the oxide is used as a drying agent.
oxalic acidc2h2o4 is generally used as ableaching and cleansing agent. calculate concentration of all the species
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively. A sparingly soluble salt, Herbigon is dissolved in 1M acetic acid for technical reas..
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