How much urea (CH4N2O; molecular weight: 60.056 g/mol) in grams do I need to add to 1L water to have a final concentration of 20 mg/L Total Nitrogen as Nitrogen or TN-N. Nitrogen molecular weight is 14.0067 g/mol.
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How much urea (CH4N2O; molecular weight: 60.056 g/mol) in grams do I need to add to...
How much citric acid (99% concentration; Molecular Weight:192.12; linear formula: HOC(COOH)(CH2COOH)2) do I need to add to a lake (volume of lake:1233 cubic meters; m3) to lower the pH from 10.51 to 7. Lake Hardness: 412 mg/l CaCO3. Lake Alkalinity: 89.8 mg/L CaCO3.
An ionic molecular solid AX has a molecular weight 250 g/mol is face centered cubic with regard to the anions, X, which have a radius of 300 pm. The cations, A+, have radius 200 pm and are found octahedral interstitial spaces. The edge of each unit cell is as long as the diameter of 1 cation and 1 anion. When 25 grams of AX (as described above) is dissolved into 500 grams of water at 293.15 K 41.36 kJ of...
10) How many grams of ice do I need to add to the 356 grams of my soda if I wish to lower the temperature of my soda from 21.8°C to 3.9°C. Assume that the specific heat of the soda is 4.172 J/g⋅C°. The specific heat of water is 4.184 J/g⋅C°. The heat capacity of the glass is 56.4 J/C°. The molar enthalpy of fusion (melting) of ice is 6.018 kJ/mol.
need help calculating mmol i have the molecular weight in (g/mol) i have the amount in volume (uL) MW(g/mol)- 112.22 volume (uL)- 400 im confused on how to calculate for mmol from those two set of information.
An ionic molecular solid AX has a molecular weight 250 g/mol is face centered cubic with regard to the anions, X, which have a radius of 300 pm. The cations, A+, have radius 200 pm and are found octahedral interstitial spaces. The edge of each unit cell is as long as the diameter of 1 cation and 1 anion. How many of each ion exists in the unit cell? What is the density of the unit cell? How many atoms...
How much 1000 mg/L Zeolite do I need to add to a 750 ml wastewater flask to go at a treatment of 10 mg/L Zeolite?
If given the molecular weight of glucose (180 g/L) how would you convert glucose in mg/dl to mM or mol/L? Need general answer on how to do calculations not needed for specific number.
The molecular weight of anhydrous calcium chloride is 110.99. How many grams do you need for 100 mL of 5 mM calcium chloride?
Concentrated hydrochloric acid (HCl) (molecular mass 36.5 g/mol) has a molarity of 3.6M. What volume of concentrated HCl would you need to add to prepare a 20% (w/v) solution of HCl with a final volume of 500 mL, I have calcualted that 3.6mol/L x 36.5g/mol =131.40g/L. Then to get the 100ml value and percentage: 131.40/1000 x 100 =13.14g/100ml therefore 13.14%. 20% of this would be 2.628g. Is this the answer?
how much distilled water do I have to add to 2.5 g of Na2CO3 and 2.5 g NaHCO3 to make a 1.0 M of each?