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Question- Sodium thiosulftate is a hydrated compound containing five water molecules. Calculate the amount of hydrated sodium thiosulfate necessary to make 500mL of 0.025 M solution (remeber that the water molecules are included in the molecular weight of hydrated compounds.
Solve the above problem in detail no word count
A 1.0 L buffer solution is 0.250 M LiC2H3O2 and 0.050 M HC2H3O2 . Which of the actions will destroy the buffer? (a)adding 0.050 moles of LiC2H3O2(b)adding 0.050 moles of HCl(c)adding 0.050 moles of HC2H3O2(d)adding 0.050 moles of NaOH.
oleci acid has following compostions : 76.54%C, 12.13%H, 11.33% O. If the experimental molar mass is 282.g/mol, what is the molecular formula of oleic acid?
Predict the major and minor products of the following reaction.
the first-order rate constant for the decomposition of a certain antibiotic in water at 20 degrees celsius is 1.65
calculate the concentration of so2 that must be reached in polluted air if the dissolved gas is to produce a ph of 4.0
the product of this reaction ozone is a pollutant in the lower atmosphere. ozone is an eye and lung irritant and also
Problem- Calculate the pH of a buffer solution that is 0.60 M in NH4Cl and 0.75 M in NH3. (K b = 1.8 x10^-5 for NH3)
Which of the following is a mechanism by which enzymes assist in formation of a transition state intermediate? a) Preventing interference by water molecules.
hydrogen and nitrogen have different molecular weights, so mass fractions will be different than mole fractions.
Calculate the initial concentration of iodide ion after the solutions in tubes A and B are mixed (before the reaction begins).
Draw the structure of the product that is formed when 1-pentyne undergoes reaction with two equivalents of HCl.
A certain quantity of a gas occupies 61.3 mL at 68C. If the pressure remains constant, what would the volume of the gas be at 17C?
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