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Which are hybrid orbital the carbon at the following molecules a, H3C-CH3 b, H3C-CH= CH2 c, CH3-C Tripl bond C-CH2OH d, CH3CH=O
A person inhales air richer in O2 and exhales air richer in CO2 and water vapor. During each hour of sleep, a person exhales a total of 300. L of this CO2-enriched and H2O-enriched air.
A solution is prepared from 0.95 grams of H3PO4 ,(Phosphoric acid) and 1.15 grams of HClO4 (perchloric acid) in 150 mili litres of solution then determine how many milliliters of 0.425 M sodium hydroxide( NaOH) is needed.
The student then adds water to the flask dissolving the sugar the mass is now 204.274g. calcuate the density of this solution
if 77.0 mL of .150 M HCl (aq) is needed to neutralize all the NH3(g) from a 2.25 gram sample of organic material, calculate the mass percentage of nitroge in the sample.
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
You need to produce a buffer solution that has a pH of 5.02. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? ..
calculate the root-mean-square speed of Ne atoms at the temperature at which the average kinetic energy
How many MOLES of phosphorus triiodide are present in 7.73E+22 molecules of this compound
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
An aqueous solution of hydrobromic acid is standardized by titration with a 0.164 M solution of potassium hydroxide. If 39.7 mL of base are required to neutralize 18.1 mL of the acid, what is the molarity of the hydrobromic acid solution
4. How many grams of NaNO3 would you add to 250g of H2O in order to prepare a solution that is .500 molal in NaNO3?
What concentration of sodium chloride in water is needed to produce an aqueous solution isotonic with blood (blood, pi=7.70 atm at 25 degree C)
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