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How many milliliters of a 15.0% by mass solution KOH(aq) (d=1.14g/mL) are required to produce 26.0L of a solution with pH=11.50?express answer using 2 significant figures.
calculate porphyrin molecule lowest energy absorption if length of molecule is 1000 pm as approximated by porphyrin
If one solution has an H3O+ concentration that is 10 times that of another solution, what is the difference of their pH values
Calculate the pH of a solution resulting from the titration of 50mL of 0.04M HBr with 25 mL of 0.107M KOH. Give your answer to two decimal places
A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C? (ethylene glycol is nonvolatile.)
You are given 10.0 of aluminum and 15.0 of chlorine gas. Part A If you had excess chlorine, how many moles of of aluminum chloride could be produced from 10.0 of aluminum
Calculate the molar solubility and the solubility of iron (II) hydroxide in pure water then in 0.125M NaOH(aq).
If the final solution has a chloride ion concentration of 1.80M which choice is closest to the concentration of the original SrCl2 solution?
Elements in the first short period are limited by the octect rule whereas those in the higher period can expand their valence shells. Describe what this means, account for this phenomenon and give an example of each.
The Kd of methylene chloride/ water of an organic compound is 2.50 A solution is made my dissolving 48 mg of the compound in 10 ml of H2O. How many mg of the compound will be extracted using 10 ml of methylene chloride
A 30 g sample of water at 280 K is mixed with 50 g of water at 330 K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A 2.45 g sample of a gaseous oxide of nitrogen occupies a volume of 1.34 L at 28°C and 745 mmHg. What is the most likely formula for the gas. A. NO B. N2O4 C. N2O D. NO2
why is the dissolving of ammonium chloride endotherimic? would you get similar results for dissolving all salts
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