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Question- A box of Borax laundry booster claims to be more than 98% pure. If a sample of borax with a mass of 2.272g was neutralized by 26.28 mL of 0.444 M HCl in a titration, is the borax as pure as the manufacturer claims?
It is not a question in the book, so I just need the full solution of deriving
How much energy (in kilojoules) is needed to heat 3.60 of ice from -14.5 to 26.0? The heat of fusion of water is 6.01, and the molar heat capacity is 36.6 for ice and 75.3 for liquid water.
Which of the following ions is least likely to form colored compounds- a)Mn^2+ b)Cr^5+ c)Sc^3+ d)Fe^3+ e)Co^2+
Which of the following is true of the internal energy of a system and its surroundings during an energy exchange with a negative
Problem- A mixture of three gases has a total pressure of 1380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO 2, 3.04 mol CO, and 1.50 mol Ar. 1) What is the partial pressure of Ar
The equilibrium contant Kc for the reaction HF(aq)+H2O(l)-->H30+(aq) +F-(aq) is 3.5 x10^-4. What is the equilibrium concentration of H30+ if the initial concentration of HF is 1.0M.
The energy difference of 3.8 kJ/mol between gauche and anti butane corresponds to an equilibrium constant, Keq, of approximately 1.9. Calculate the percentage of each conformer at equilibrium.
What is the meaning typically associated with 1/2 kT, kT, kT/hc, and RT in physically chemistry? Why are these important
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. In the simplest case, ethene (C2H4) and H2 form ethane (C2H6)
The molecular weight of the protein is 3.4e4 grams per mole. What is the molar concentration of the protein?
a gas mixture contains helium and oxygen at respective partial pressures of 255 torr and 0.450 atm. what is the total
what concentration of aqueous NaCl solution freezes at -15.2 C? the freezing point of pure water is 0.0 C and Kf of pure water is -1.86 C/m.
For lab this week i need to separate a mixture of caffeine and Phenacetin using Acid-BAse Extraction. What reagent should i use for the separation of components by extraction of the dichloro methane layer
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