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Calculate the molarity of 464 mL of a solution that contains 135 g of sucrose C12H22O11
How many grams of caffeine (C8H10N4O2) are present in one cup of coffee that contains 8.98 × 1021 caffeine molecules?
What is the molarity of a HCl solution if the reaction of 200mL of the solution with excess CaCO3 produces 10.5L of Co2 gas at 725mmHg and 18C?
An odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas.
At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) ->2 NO(g) + O2(g) The equilibrium constant KP is 158. Analysis shows that the partial pressure of O2 is 0.44 atm at equilibrium. Calculate the pressure of NO and NO2 in the mixture.
50.0 ml of 2.00M H2SO4 react with 75.O ml of 2.00M NaOH.Identify the limiting and excess reactants.
In a purity check for industrial diamonds, a 10.25 carat diamond is heated to 74.21 oC and immersed in 26.05 g of water in a constant pressure calorimeter.
calculate the molality of a solution prepared by dissolving 19.9 grams of KCl in 750.0 mL of water
Diacetylferrocene, In the formation of diacetylferrocene, the product is always the one in which each ring is monoacetylated.
A 1 L flask is filled with 1.45 g of argon at 25 C}. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm.what is the partial pressure of argon in the flask?
Metal A was determined to be 95% extracted into methylene chloride with dethizone at pH6, when equal volumes of aqueous and non-aqueous solvents were used. what is the distribution ratio of A
calculate (a)molality? (b)molarity of NaCl? (c) What is the mass/mass and remove the most loosely held e- from a gaseous atom in a ground state
Lyzozyme(The protein) unfolds at a transition temperature of 75.5 degree celsius, the standard enthalpy of transition = 509 kJ/mol. Compute the entropy of unfolding of this protein at the temperature of twenty five degree celsius
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