50.0 mL of 0.400 M NaOH (ag) was added to 20.0 mL of 0.500 M H2SO4 (ag) in a calorimeter of heat capacity 39.0 J/K. The temperature of the resulting solution rose by 3.60 K. Find AH° in kJ/mol for the neutralization of H2SO4 (ag) with NaOH (ag). Specific heat of aqueous mixture = 4.184 J/g.K. Density of mixture = 1.030 g/mL

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Consider the table of equilibrium constant values given below for a given set of conditions. What will be the concentration of [HCO3-] in water that is in equilibrium with both CaCO3 (s) and 225 ppm CO2 (g) under these conditions? Equation Type Value CO2 (g) H2CO3 (aq) KH 1.7 x 102 H2CO3 (aq)=HCO3(aq) + H (aq) Kat 6.44 x 107 HCO3 (aq) CO32 (aq) + H* (aq) Ka2 8.43 x 10-11 CaCO3 (s) Ca2+ (aq) + CO2 (aq) Ksp 8.4 x 10-9 H₂O (1) H(aq) + OH (aq) Kw 7.6 x 10-14 O 1.6 x 103 M O 8.1 x 10-3 M O 5.6 x 104 M O 3.9 x 104 M O 7.9 x 104 M

If 1000 L of gasoline has spilled into the street (MW=117 g/mol, density=0.7 g/mL which is true for octane) then firefighters add a lot of a material that dissolves into it that reduces the vapor pressure (liquid octane doesn’t burn, only the vapors). The firefighters put 500 kg of a material into the gasoline and reduced its vapor pressure from the pure partial pressure of 10.0 kPa down to 8.0 kPa. What is the molecular weight of the material that was added? (hint: use Raoult’s Law, which relates changes in pressure to the mol fractions.

Give correct detailed Solution with explanation needed. Don't give Handwritten answer. Don't copy answer anywhere

Could you please provide the balanced chemical equation for the reaction

The reaction of an aqueous solution containing 0.425 M oxalic acid (H₂C2O4), 4.15 M fluoride ions, 2.15 M hydrofluoric acid, and 0.160 M oxalate ions (C₂04²¯). H₂C₂O4 (aq) + 2 F¯ A Moving to anoth 2 HF (aq) Keq = 2.10 The reaction quotient, Q, will have a value of and will shift to favor the 2.10 (aq) + C₂04²- 0.195 0.101 products (aq) reactants

When 80 mg of an unknown white powder found at a crime scene is dissolved in 1.42 mL of ethand density = 0.789g/mL, normal freezing point -114.6 °C, Kf = 1.99 °C/m), the freezing point is lowere -115.6 °C. Which of the following substances could be responsible for this freezing-point depressio (assume the powder is a nonelectrolyte) Show all the work you used to determine the answer. a) meta-tyramine (C8H₁₁NO: MM = 137.182 g/mol) b) sucrose (C12H22O11: MM = 342.2965 g/mol) c) cocaine (C17H21NO4: MM = 303.353 g/mol) d) fructose (C6H12O6: MM = 180.16 g/mol) e) codeine (C18H21 NO3: MM = 299.364 g/mol) of been uov bluow 10cl doum woh (3

TUOv to lls worla taum uo 1o9TIOoni bolam od lliw elimu iboo lut o 19 4. Given the Borax reaction below, what would be the solubility product (Ksp) of borax at 40 °C, if the solubility of borax is 0.8 mol L¯1 at 40 °C? Na,B4O5 (OH)4 · 8H,O(s) = 2Na+ (aq) + B405(OH) (aq) +8H,O(1) sr vol (A) gnsb vgotino brrbae ar bo CHO)gab xglerino bisbasie orb il S