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The reactant concentration in a zero-order reaction was 0.100 M after 130 s and 2.50×10^-2 M after 325s . The rate constant for this reaction is 3.85x10^-4 M/s. What was the initial reactant concentration for the reaction described in Part A?
Write the overall cell reaction for the galvanic cell given below- Pt(s)/H+(aq)//Cl2(g)/Cl-(aq)/Pt(s)
When we go across a row of the periodic table, electrons are added and the ionization energy typically increases. When we go down a column, however, electrons are being added but the ionization energy typically increases. Explain this behavior. Th..
How much of the drug substance has to be used (calculate)? B) How much NaCl do you need to add to hace an isotonic preparation?
A is allowed to come in contact with substance B. B has a mass of 46.28 grams and its initial temperature is 86.5oC. These two substances reach thermal equilibrium at a temperature of 64.2oC. If the specific heat capacity of substance B is 1.17 J/..
The total surface area of the earth consisting of forest, cultivated land, grassland, and desert is 1.49 x 108 km2 . Every year, the mass of carbon fixed by photosynthesis by vegetation covering this land surface according to the reaction 6CO2
In the laboratory you are asked to make a 0.179 m magnesium acetate solution using 400 grams of water. How many grams of magnesium acetate should you add
If 23mL of 6.4M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid.
Write the formulas for each of the following ions and compounds: (a) tetrahydroxozincate(ll) (b) pentaaquachlorochromium
What is the pH of a solution in which 258 mL of HCl(g), measured at 27.5^circ C and 1.02 atm, is dissolved in 1.5 L of aqueous solution?
an excess of zinc metal reacts with 500. ml of 12m hydrochloric acid and produces 48.8 l of hydrogen gas at 20 degrees
A mammalian species uses the following metabolic pathway to obtain another bioactive substance. Draw the skeletal structure of the product of each metabolic process. (Show your product in the unionized state and omit any stereochemistry. You may c..
aqueous solution of 0.110 m of a weak acid ha is 1.80 ionized. determine at what temperature does this solutionaq
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