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What is th molarity or concentration of a solution composed of 5.85g of potassium iodide, dissolved in enough water to make 0.125L of solution?
Which of the following best describes a competitive inhibitor, I: A. As [I] increases, there is a decrease in VMAX and an increase in KM,app. B. As [I] increases, there is a decrease in VMAX and an decrease in KM,app
At 25 degrees Celsius, the reaction: H3O+ + NH3 --> NH+ + OH- is first order in each reactant, and has a rate constant of 4.3x 10^10 M^-1 s^-1
A 1.6-m-long string fixed at both ends vibrates at resonant frequencies of 708 Hz and 1062 Hz, with no other resonant frequency between these values.
Find the formula of a compound using stoichiometry and ideal gas equation and Deduce from these data the corresponding equation and write formulas for the oxide and sulfate of M .
In the equation below, fill in the blanks with the appropriate whole numbers to provide a balanced equation: ___ EtCH=CHEt + ___ KMnO4 --> ___ EtCO2K + ___ MnO2 + ___ H2O + ___ KOH
what is the mol fraction na2so4 in a solution which is 11.5 by weight na2so4 molar mass na2so4 142.06 gmol and h2o
The acid-dissociation constant for an acid-base indicator HIn is 0.0000438. At 600 nm, the molar absorptivities are 2230 for HIn and 8900 for In-. Calculate the absorbance at 600 nm of a 1.00 x 10-4 M solution of the indicator at pH 4.81 in a 1.00..
A mixture of CO2 and Kr weighs 35.0g and exerts a pressure of 0.708 atm in its container. Since Kr is expensive, you wish to recover it from the mixture. After the CO2 is completely removed by absorption with NaOH(s), the pressure in the container..
A gaseous oxide of nitrogen has an empirical formula of NO2. A 0.556 g sample of this gas in a 250. mL container at 24ºC exerts a pressure of 44.8 cm Hg. What is the molecular weight of the gas? What is the molecular formula of the gas
Consider the following chemical equation. Al(OH)3(s) + H2SO4(l) ? Al2(SO4)3(aq) + H2O(l) If 3.30 g of aluminum hydroxide reacts with 1.50 g of sulfuric acid, what is the mass of the water produced
Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons.If the radius of a neutron is 1.0 × 10-13 cm, calculate the density of a neutron in g/cm3. (volume of a sphere = ) Assuming that a neutron star has the same dens..
Which reagent is the limiting reactant when 1.250 g Al(OH)3 and .750 g H2SO4 are allowed to react? How many moles and grams of Al2(SO4)3
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