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Breathing properly requires the presence of what compound that affects surface tension of alveoli in the lungs?
A. Potassium B. Plasma C. Surfactant D. Sodium Chloride
A 10.0 mL sample of aqueous H2SO4 requires 24.32 mL of 0.134 M NaOH to reach the endpoint. What is the molar concentration of H2SO4. First write the equation for the reaction.
how much heat an energy is needed to raise a temperature of 100g of water from 0 celcius to 60 celcius
the complex ion [Cr(CN)6]4- and draw out its d-orbital energy level diagram CN- is strongly interacting ligand. The wavelength of maximum absorption in the absorption spectrum of the complex ion is 320nm. Compute the d-orbitials splitting Δo, in k..
A solution of I2 was standardized with ascorbic acid Using a 0..1 g sample of pure ascorbic acid, 23.52 mL of I2 were required to reach the starch end point.
A student wants to conduct an experiment requiring 500 ml of a 3 M sulfuric acid 18 M concentrated sulfuric acid is available. How could the student prepare the desired solution
How much ozone is used if the following reaction releases 568kJ of energy in the form of heat? Pb(s) + C(s) + O3(g) ---------> PbCO3(s)
What was the mass percent of dissolved solids in the sea water? b.) The actual solution chloride content in the sea water was 2.69%
What volume of air is required to burn 5.0 liters of methane when both are the same temperature and pressure
Sparklers enclose powdered iron. Explain why do sparklers burn more rapidly that a piece of iron wire? Select all that apply.
A 0.48 mg sample of sulfur-35 has an activity of 20.4 Ci. What is the decay constant of sulfur-35 (in /s)
stock solution is prepared by adding 28 ml of 0.2 m na3po4 to enough water to make 76 ml. what is the po43-
an unknown sample of n2 gave a current of 2.36microa in an electrochemical analysis. when 0.500 ml of solution
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