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Hydrolysis of the compound B5H9 forms boric acid, H3BO3. Fusion of boric acid with sodium oxide forms a borate salt, Na2BO7. Without writing complete equations, find the mass (in grams) of B5H9 required to form 156g of the borate salt by this reaction sequence.
Would the following procedural errors cause an increase, a decrease, or no change in your calculated molecular weight? Indicate clearly the reasoning in each case.
what is the molarity of the oh- ions in 0.040 m barium hydroxide baoh2? i know the answer is .08m. the barium hydroxide
A solution containing 82.0 g of ascorbic acid dissolved in 230 g of water has a density of 1.22 g/mL. Calculate the molarity of ascorbic acid in the solution.
A sample of oxygen is collected by water displacement at a temperature of 35C when the barometric pressure is 752 mm Hg. What is the partial pressure of the dry gas?
A 2.00 L sample of air at -50 degreees C has a pressure of 700 torr. What will be the new pressure in torr if the temp is raised to 50 degrees C and volume is increaed to 4.00 L
Predict stereochemistry of the products formed if the addition of bromine to fumaric acid occurs via Syn addition
A room contains 12,000 ft.³ of air at 75°F and 29.7 inches Hg Absolute. The air has a dew point of 60°F. How many pounds of water vapor are in the air
KRB pelle technique, solvents, mulls, thin film plate technique. which one of the following methods is better
A catalyst lowers the activation energy of a reaction from 215 kJ to 206 kJ. By what factor would you expect the reaction-rate constant to increase at 25*C? Assume that the frequency factors
A 48.0-L gas cylinder contains 249 mol of H2 gas at 298 K. What is the pressure inside the cylinder.
What mass of P4 is produced when 41.5 g of Ca3(PO4)2, 26.5 g of SiO2 and 7.80 g of C are reacted according to the equation: 2Ca3(PO4)2 + 6SiO2 + 10C ¼ P4 + 6CaSiO3 + 10C
a sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution
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