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Choose the answer which presents the chemical formulas NF3, NaBF4, and BF3 in order of increasing solubility of the substances with these formulas in hexane (lowest solubility listed first). a) NF3 < NaBF4 < BF3 b) NaBF4 < BF3 < NF3 c) NaBF4 < NF3 < BF3 d) BF3 < NaBF4 < NF3 e) NF3 < BF3 < NaBF4
A gaseous fuel mixture contains 23.0% methane CH4, 44.0% ethane C2H6 and the rest propane C3H8 by volume. When the fuel mixture contained in a 1.53L tank, stored at 748 mmHg and 298 K, undergoes complete combustion, how much heat is emitted
What would be the product if dimethyl maleate (cis-MeCCH=CHCO2Me) was heated in the presence of 3-sulfolene?
1.3 Kg of Ethane gas (C2H6 ) was heated from 27.0 degree Celsius to 78.0 degree Celsius. Calculate delta E at constant pressure. ( Cp= 52.92 j / K mol)
if 646 mL of gas at 280 K Is heated to 297 K, what will the new volume be? using charles's law
Calculate a rough value of the concentration of OH- ion, [OH-], in the saturated solution.The approximate value of the Ksp for calcium hydroxide is 6.510?6
What is the concentration of the H 2 SO 4 if a chemist titrates 300.0 mL of Sodium Hydroxide NaOH with a 5.0 M solution of NaOH and needs only 3.4 mL of the base to reach the endpoint,?
Calculate the concentration of an aqueous solution of Ca(OH2)that has a pH of 12.57? Express your answer using two significant figures.
A student performs an extraction using water and methylene chloride. Which is the top layer and which is
A 300.0-mL saturated solution of gold (II) phosphate, contains 0.31 grams of dissolved salt. a. Write an equilibrium expression for the solubility product constant.
Examining the two components in your mixture below, which component would you expect to come off the column first? Which component will come off the chromatotron first
How many moles and liters of gas would be produced by reacting 55.7 g of NaHCO3 with excess vinegar. Assume the reaction releases all the gas theoretically possible, and the reaction takes place at 22 C and 1 atm. NaHCO3(s) + CH3COOH(aq)-> CO2(g) ..
2SO2(g) + O2(g) 2SO3(g) Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished.
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