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Compute lbs Ca in 1000ft2 (9 inches deep) golf green (1.1 g/cm3 bulk density). Compute grams of Ca in a 2 kg container pot.
Compute the meq/100 g of each cation and percent base saturation of the soil. Compute the percent acid saturation.
The given cations were extracted from 100 g soil with at CEC of 20 meq/100g. Compute % base saturation of soil.
Soil is 75% saturated with Ca+2 + Mg+2 + K+. 50 g of the soil is titrated with 20 ml of 0.1 N NaOH. Compute the CEC.
50 g of soil is extracted with NH4Cl (ammonium chloride) and extract diluted to 0.5 liter. Soil pH is 7.5. Was the estimate of CEC good estimate? Why or why not?
If temperature of mixture is 25oC, will it be possible to discharge all waste into river within a 7--day period if river pH should be maintained above 7.0?
Determine the pH of the water after CO2 removal? Suppose water temperature remains at 10oC and that ionic strength corrections can be neglected.
Find molarity of solution prepared by diluting 49.5 mL of 2.09 M AgNO3 to final volume 82.6 mL? Compute the final answer to 2 decimal places.
How many milliliters of 1.30 M KOH solution would be required to give 6.06 g of KOH to a chemical reaction? Find osmolarity of the solution containing 0.3 M Ca(NO3)2 and 0.1 M Sucrose?
Which of the given compounds are insoluble in water? How many grams of glucose (C6H12O6) are there in 257.15 mL of 21.68 %(m/v) glucose-water solution?
The activity of isotope was determined to be 4000mci on Monday at 10.00 am on Tuesday at same time its activity was found to be 3200mci. Determine the isotope's half-life.
A wall was constructed in middle of "near field" region of Non-ionizing redaction source. Find out the attenuation factor for this wall.
A 15mw energy laser has beam exit diameter of 2cm and beam divergence of 0.0002radians. Compute power density of beam at 100meters away from source.
What concentration must you dilute stock to so that you only have to add 2uL of Arsenic to your 1mL of cells to have 5nM concentration of Arsenic?
You require to make the stock solution of medium for the culture cells, which normally includes liquid salt solution and bovine serum.
The molecular weight of anhydrous calcium chloride is 110.99. How many grams do you need for 100 ml of 50 mM calcium chloride?
The molecular weight of sodium hydroxide is 40.00. How many grams would you require for 150 ml of a 1mM solution?
To make up the solution of phosphate buffered saline (PBS). How many grams of each will you require to make up 500mL of PBS?
You only wish to add 2µL of vincristine solution to the cells. What concentration must you make the stock solution of vincristine to make the 2uL addition?
A 20.00 mL aliquot of 0.120 M Cu+ solution is titrated with 0.100 M solution of Ce4+ according to following reaction: Find cell potential at each of the given volumes of added Ce4+?
Is bond energy of X2 positive or negative quantity? Why? Assume ΔH for reaction is -500 kJ/mol. Evaluate bond energy of the X2 molecule.
If atom X is represented by sphere on left below, which other three spheres would probably represent X-anion. Explain your choice.
If sphere on left below represents metal atom M, which of other three spheres would probably represent M+ cation? Describe your choice.
A swimming pool, 20.0 m ? 12.5 m, is filled with water to depth of 3.71 m. If initial temperature of water is 18.5°C, how much heat must be added to water to raise its temperature to 28.3°C?
Sketch four different Lewis electron-dot formulas for SeO2 molecule. One must have two single bonds, two have single and double bond, and one two double bonds.