Titration to a phenolphthalein endpoint
A sodium hydroxide solution is standardized using 0.502g of solid oxalic acid, H2C2O4. Find the molarity of the base if 30.50 mL are required for the titration to a phenolphthalein endpoint.
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Two determinations of the dissolved oxygen content of a 200 mL sample of water made five days apart, gave 5.3 ppm and 2.2 ppm of dissolved O2, respectively. What is the biological oxygen demand of the sample?
The specific heat of iron is .443 J/g/K. What mass of steam at 100 degrees celcius must be converted to water at 100 degrees celcius to raise the temperature of a 150 g iron block from 25 degrees celcius to 100 degree celcius?
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Determine the expected value of each project's annual cash flows.Determine each project's risk-adjusted net present value.
If the rate of disappearance of N2O5 is equal to 1.60 mol/min at a particular moment, what is the rate of appearance of NO2 at that moment?
A 10.0 mL sample of household ammonia solution required 33.55mL of 0.450 M HCl to reach neutralization. Calculate (a) the molar concentration of the ammonia and (b) the mass/mass percent concentration of ammonia(17.04 g/mol), given a solution dens
Konerko Company sells two types of computer chips. The sales mix is 30% (Q-Chip) and 70% (Q-Chip Plus). Q-Chip has variable costs per unit of $30 and a selling price of $50. Q-Chip Plus has variable costs per unit of $35 and a selling price of
A student titrates a sulfuric acid solution of unknown concentration with 0.15 M sodium hydroxide. The titration requires 34.8 mL of the sodium hydroxide solution to completely neutralize 10.00 mL of the sulfuric acid solution. What is the concent
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Insert citations in APA format and list reference in Exposure to violence at home-physical, sexual, or emotional abuse, coercive control, or witnessing partner
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