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The titration of 35.0 mL of 0.250 M solution of Ca(OH)2 with 0.200 M HCl will require how many mililiters of the HCl solution for neutralization?
a. 87.5 mL
b. 43.8 mL
c. 21.9 mL
d. none of the above
What is the minimum uncertainty in the position of an electron, given that we know nothing about its speed except that it is less than the speed of light
The reactant concentration in a first order reaction was 5.50x10^-2 M after 40.0s and 1.60x10^-3 M after 100s. What is the rate constant for this reaction
A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution. What is the pH at the equivalence point? The Ka of hydrofluoric acid is 4.50 × 10-4.
Refer to the periodic table and select the symbol of the element that fits each of the following descriptions: a) the group IVA/14 semimetal in the fourth period.
What are the spectator ions in the solution after completely precipitating an insoluble chloride compound when mixing KCl(aq) and Pb(NO3)2(aq)
A catalyst has a avoid fraction of 0.40, an internal surface area of 180 m2/g and a pellet density of 1.40 g/cm3. Estimate the effective diffusivity of thiophene with hydrogen
for the reaction a b c the rate law is ka. if it takes 80.0 seconds for 70.0 of a 10.0 gram sample of a to be
Assume your unknown sample is 75% KHP, what mass of the unknown sample should you measure in order for your titration to require 20.0 mL 0.105 M NaOH
What is the molar mass of the unknown gas. Elemental analysis of the unknown gas from Part A revealed that it is 30.45% N and 69.55% O. What is the molecular formula for this gas.
Calculate the mass of emitted into the atmosphere upon accelerating the from 0.0 to 67.0 . Assume that the required energy comes from the combustion of octane with efficiency.
The procedure uses 3.0M NaOH. However, the student notices that the only solution of NaOH is concentrated (19M ) NaOH solution. How many mL of water are needed to make 500mL of a 3.0M NaOH
Identify the statements that accurately describe how hydrogen ion concentration relates to energy production in oxidative phosphorylation.
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