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A 26.0 g sample of chromium (Cr) reacts with sulfur (S) to form 50.0 g of chromium sulfide. Determine the formula for the chromium sulfide and the charge on the chromium ion.
The titration requires 34.11 mL of base to neutralize 15.00 mL of the acid. What is the Molarity if acid in the vinegar?
Calculate the activation energy of a reaction whose rate constant is 4.22 x 10?4 s?¹ at 25°C and 4.54 x 10?4s?¹ at 45°C.
Which of the following is an appropriate symbol for the ion containing 24 protons, 28 neutrons, and 21 electrons
have a buffer solution composed of 4.00 mol of acid and 1.75 mol of the conjugate base. If the pKa of the acid is 2.20, what is the pH of the buffer?
What is the bubble point temperature at 2 atm. What is the dew point at 2 atm. What is the temperature if 50mole % is vapor?
determine the renal extraction ratio for CHF patients it CHF reduces renal function by 1/2 and state and give explanation which is the more abundant isotopic form of copper.
At 518°C, the rate of decomposition of a sample of gaseous acetaldehyde, initially at a pressure of 363 Torr, was 1.07 Torr s-1 when 5.0% had reacted and 0.76 Torr s-1 when 20.0% had reacted. If the reaction rate is proportional to [A]n , determin..
Calculate the mass of KI in grams required to prepare 5.00x10^ 2mL of 3.2 M solution.
Arrange the following substances not listed in Table according to their expected lattice energies, listing them from lowest lattice energy to the highest.
After complete combustion, a 0.4946-g sample of the compound yields 0.7092 g of CO2, 0.4355 g of H2O, and 0.3812 g of P4O10. What is the empirical formula of the compound
How does one separate a mixture solution which comprises of ethyl p-aminobenzoate,benzoic acid and trans-stilbene?
With water as a solvent, determine the molality of the solution required to produce a change of temperature equal to 2 ºC
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