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A layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 21.4% of that found in living organisms. How long ago was this ice age?
A solution of acid was found to have a hydrogen ion concentration of 0.03 mol dm-3 what is the pH of the solution?
Consider a 0.65 m column with van Deemter parameters A=0.22 mm, B=21.7 mm mL/min, and C=0.018 mm min/mL. If it takes at least 85 theoretical plates to fully separate two solutes, what range of flow rates can be used to separate the solutes? (Pleas..
Use Henderson Hassalbalch equation to calculate how much HCl must be added to a liter of buffer that is 1.5 M in acetic acid and 0.75M in sodium acetate to result in a buffer pH of 4.10? Ka = 1.8 x 10-5
Provide an introduction of the disease, outlining the major signs/symptoms of the disorder and the reason why this was selected as a genetic/inherited disease?
lab results show that our aluminum spooled weld wire has an aliphatic hrdrocarbon lubricant present. the lubricant is
MAIN advantage of ELISA over other immunoassay techniques as far as analyte detection is concerned
Why are active on-duty firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters.
gold-198 is a beta emitter with a half-life of 2.7 days. what percentage of a gold-198 sample remains after 13.5 days?
Sound from the siren of an emergency vehicle has a frequency of 700.0 Hz and moves with a velocity of 345.0 m/s. What is the distance from one condensation
1. how many calories are required at zero degrees celsius to melt an ice cube with a mass of 25g?2. a. calculate the
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 128 g of a 50.0% by mass hydrogen peroxide solution?
a chemist measures the vloumes of 1.00 mole n2 and 1.00 mol so2 and finds they differ by 0.30 l. which gas produced the
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