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a) From the number if moles of ammonia calculated in part (a - below) determine the number of micrograms of mitrogen per gram of dry soil. Assum you have 2.753 f of soil and all of the ammonia diffused from the soil.
b) number of mili moles of acid H2SO4 = 0.0025*3.25 = 0.008125 so each mole of H2sO3 WILL RELEASE 2 H+ ions therefore, number of moles of H+ = 2*0.008125 = 0.01625 mili moles
A mixture of CaCO3 and CaO weighing 0.630 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.500 g.
Which of these is likely to be the best conductor of electricity?
A 2.50-g sample of a large biomolecule was dissolved in 37.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
The HCl turns the indicator red and the NaOH turns the indicator purple, but what happens to the indicator when the 2 solutions are mixed? Also, is there a temperature increase with the reaction?
How much heat is absorbed by 100 mL of a dilute solution of NH4NO3 as it changes its temperature from 22.4 degrees C
Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?
Choose the answer that shows a correctly balanced equation.
calculate the minimum volume of 1.00M HCL required to react completely with 5.00g of Ca ?
What is the percent-yield of H2 in the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106?
Calculate the energy released as heat when 26.83 g of Cu2O(s) undergo oxidation at constant pressure.
Calculate the equilibrium concentration of Zn2+(aq) in a solution that is 0.0125 M Zn(NO3)2 and 0.600
What is the enthalpy change corresponding to the melting of 2.5 moles of H2O? What is the system? What is the surrounding?
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