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A sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution, what is the CI- concentration, in milliiequivalents per liter?
How does the extraction procedure differ when the organic phase os less dense or more dense than water? and wht difference dis you observe between the two drying agents
A sample of seawater consists of water, sodium ions, chloride ions, and several other dissolved salts. These ions and salts are evenly distributed throughout the water. Which term or terms could be used to describe this sample of seawater?
a student determined the mass of a product, KCl to be 12 g. Calculate the number of particles produced.
What would the product/structure be if the reaction of methyl benzoate was a subsitution (add H and NO2 to it)?
what is the boiling point of a solution containing 2.33 grams of C8H10N4O2 , dissolved in 15 grams of benzene?
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4
The reaction of 2.30g N2 with excess H2 produces 2.00g NH3. The percent yield of this reaaction is?
calculate the molecular weight of an unknown substance if 0.2064 g of solid was added to 25.00 ml of cyclohexane and
A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas with the idea of trying to identify the gas.
Acetic acid has a pKa of 4.74. A sodium acetate/ acetic acid buffer (NaCH3CO2/CH3CO2H) with a pH of 4.74 can be made by: Combining 0.10 mole of CH3CO2H with 0.10 mole of NaCH3CO2 in water
What is the pH of the solution created by combining 2.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid?
air initially occupying 1 m3 at 150 kpa 20degc undergoes an internally reversible compression during which pvn
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