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Explain how to prepare 1.00 L 0.15 M NaOH aqueous solution from a concentrated NaOH stock solution (19.4M)? Find out the volume of the concentrated NaOH solution needed and describe the procedure briefly.
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.890 g of the isotope to be reduced to 0.250 g by decay.
calculate the degrees of unsaturation in a compound with the molecular formula c3h6 and draw two possible structures
From there, how would I find the moles of salicylic acid in aspirin sample (mol) and the mass of salicylic acid in aspirin sample (g), which should help me calculate the percent purity of aspirin and the percent yield of aspirin in sample. Thank y..
This solution freezes at -0.159C calculate the degree of dissociation( the fraction of molecules dissociated) for the acid in this solution ( assume the mean ionic activity coefficient has a value of 1). c) from the dgree of dissociation determine..
Consider a voltaic cell at 25o C consisting of a Mn/Mn2+ half-cell and a Pb/Pb2+ half-cell ([Pb2+] and [Mn2+] are 1.0 M). If you want to convert this voltaic cell into an electrolytic cell, how many volts must you supply
At 900 titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. Write a balanced equation.
If a protein has a molecular weight of 62,000 g/mol and a molar absorbtivity of 98,000 M-1 cm-1 , at a concentration of 1mg/mL the absorbance in a 1 cm cuvet would be:
The density of lead is 11.3 g/ml . The water level in a graduated cylinder initially at 217 ml rises to 286 ml after a piece of lead is submerged. What is the mass in grams of the lead?
what would be the effect on your calculated concentration of NaOH, if, unbeknownst to you, someone left the KHP out and it absorbed water?
Sulfur dioxide reacts with chlorine at 227 oC: SO2(g) +Cl2(g) ↔ SO2Cl2(g) Kp for this reaction is 5.1 x 10-2 atm-1. Initially, 1.00 g each of SO2 and Cl2 are placed in a 1.00 L reaction vessel.
consider the electrolysis of molten barium chloride bacl2. a write the balanced half-reaction that occurs at the
What is the half-life of a compound if 85 percent of a given sample of the compound decomposes in 45 min? Assume first-order kinetics.
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