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Will a precipitate form when 20.0mL of Pb(NO3)2(aq) with a concentration of 2.50x10-4 mol/L is reacted with 45.0mL of CaCl2(aq) with a concentration of 1.25x10-3 mol/L
The nitrate ion reaction is positive. In this case, is it accurate to state that nitrate ion was present in the original solution? Brie?y explain, referencing specific chemical reactions to support your explanation.
determine the boiling point of a solution of 72.4 g of glycerol dissolved in 122.5 g of
a solution of ammonia and water contains 3.10times1025 water molecules and 5.60times1024 ammonia molecules. how many
A 0.08353 g sample of gas occupies 10.0-mL at 295.0 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound?
Pepsin is the principal digestive enzyme of gastric juice. A 3.00g sample of pepsin is dissolved in enough water to make 10.0 mL of solution. The osmotic pressure of the solution is found to be 0.213 atm. What is the molecular weight of pepsin
A solution is made by combining 15.0mL of 16.5M acetic acid with 5.52g of sodium acetate and diluting to a volume of 1.50L Calculate the pH
At 699 K, deltaG = -23.25 kJ for the reaction H2(g) + I2(g) --> 2HI(g). Calculate deltaG for this reaction if the reagents are both supplied at 5.0 atm pressure and the product is at 1.00 atm pressure.
Show step-by-step mechanisms to produce the indicated polymeric substrate products. include an appropriate termination step where needed.
What is value of the activation energy, Ea, for this reaction. What is the value of the pre-exponential factor (sometimes called the frequency factor), A, for this reaction
dissolved in 100.0 mL water and titrated with 0.500 M NaOH; it takes 45.1 mL to reach the equivalence point. What is the molecular mass (g/mol) of pyruvic acid?
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
The density of concentrated hydrochloric acid is 1.19 g/mL and 37.5% HCl by weight. Describe how you would prepare 500mL of a 0.25M solution of HCl.
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