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An unknown sample (0.6855 g) containing KHP is titrated to the equivalence point with 9.75 mL of ).07892 M NaOH
How many moles of KHP present?
How many grams of KHP present?
What's the percent KHP in the sample?
What is the mass of sugar in 735g of a 19.85% sugar solution?
A gas expands and does P-V work on the surroundings equal to 343 J. At the same time, it absorbs 159 J of heat from the surroundings. Calculate the change in energy of the gas.
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
Stishovite is a high pressure form of SiO2 found in meteorite craters. While normal SiO2 has the quartz structure, in which each Si is coordinated by four O atoms
A 0.1mL Pure Acid phosphatase (0.5mg/ml) hydrolyzes 0.2mmol of pnPP wall in 5 min. what is the specific activity?
What volume of 0.420 M NaOH solution is needed to completely neutralize
What will be the likely effect of clearing forests and converting them to grasslands and crops on (a) the earth's reflectivity (albedo) and (b) the earth's average surface temperature?
Draw a Lewis Structure for C3O2. Draw a Lewis Structure for C2H3NO5
A powder contains FeSO4·7H2O (molar mass = 278.01 g/mol) among other components. A 3.585-g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3
SO2 present in air can be analyzed by titraion with permangante ions, as described in the equation:
Solubility of Terpin Hydrate for Chemistry Students, what is the structure of terpin hydrate and is it more soluble or less than starting material?
a solution is prepared by dissolving 4.21 g of a non electrolyte in 50 g of water. if the boiling point increases by .203 degree celsius, what is the molar mass of the solute? the boiling point elevation constant for water is .502 degree celsius p..
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