Calculate the Molarity of solution have 20 g of Glucose sugar C12H22O12 Dissolved in 125 g of water and the density of the solution Was 1.02 g/ml? If you know molar weight (C=12, O=16, H=1) *
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- Calculate the theoretical pH of a Tris buffer (pH 8.0) at 0 ºC. Assume that room temperature is 22 ºCCalculate the molarity of dilute Ca(OH)2 solution if the titration of 30.00 mL of 0.05231 M HCl required 24.76 mL of the acid. An 0.2500 g hydroxide tablet sample submitted in the lab used 36.75 mL during titration. How much is the hydroxide in mg present?Calculate the molarity (M) of a 46% (w/v) copper sulfate solution (m.w. = 160.0 g/mol).
- Calculate the pH of a buffer that contains 0.15 M MOPS anionic form and 0.25M MOPS zwitterion. The pKa is 7.2Write solubility product constant expression and calculate numerical value (Ksp) of each ionic compound 5 g of AgCl dissolved in 100.0 ml of water concentration of Ag = 0.0000133038 concentration of Cl = 0.0000133038 show ICE TABLECalculate pNF concentration in each cuvette using Beer-Lambert’s Law. ε = 18,000 M-1 cm-1; b = 2.00 cm Cuvette 1 pNF 1 mL Water 2 mL Absorbance 0.546
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- Consider a buffer solution that contains 0.55 M NH2CH2CO2H and 0.35 M NH2CH2CO2Na. pKa(NH2CH2CO2H)=9.88. a. Calculate its pH. b. Calculate the change in pH if 0.155 g of solid NaOH is added to 250 mL of this solution. c. If the acceptable buffer range of the solution is ±0.10 pH units, calculate how many moles of H3O+ can be neutralized by 250 mL of the initial buffer.The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. A . What is qH2O in Joules? B. What is qdissolution in Joules? C. What is the ΔHdissolution in kilojoules per mole?Calculate the pH of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pKa 5 4.76) of (a) 2:1; (b) 1:3.