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1) How many grams of NaCl is needed to prepare 1.50molar solution of NaCl in a 250ml beaker using 100.0g of water
2) How many grams of NaCl is needed to prepare 100.0ml of 1.50 molar solution of NaCl in a volumetric flask.
What is the BOD concentration just downstream of the discharge point? (b) If the stream has a cross-sectional area of 10 m2, "what is the BOD concentration 50 km downstream? (BOD is removed with a first-order decay rate con- stant equal to 0.20/da..
What are the percetages of each compound. Namphthalene = 17 cm^2 Phenol = 38cm^2 Toluene= 4 cm^2 question E) Calculate the retention times for th following componnts from teh following information. Component A= 7.6 cm, Component C=12.9cm. Chart sp..
solution of the monoprotic acid HBr is titrated, and 85.00 mL of 0.59M NaOH is required to reach the equivalence point. What is the original concentration of the acid solution?
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 8.80 of silver by 10.2
solve the given problem while considering that the rate coefficients for initiator dissociation propagation and
For the equilibrium H2(g)+ CO2(g) H2O(g)+CO(g) Kc=3.18 at 1106K. If each of the four species was initially present at a concentration of 3.000M.
Determine the pressure of one gram (each) of gaseous H2, He, and Ar, where each samole is contained in a volume of one liter at 0 degrees centigrade
Would this reaction be an example of saponification? phenyl-COOCH2CH3 + NaOH ----> phenyl-COONa + CH3CH2OH I ruled out Aldol condensation and enolization
determine the number of moles of hydrogen atoms when you are given 2 moles of
If two ideal gases are both placed in identical containers with at the same constant Volume and Temp and same number of moles of gas
The mass of the dry gas is 872 mg. A fragment of the tank indicates that the gas is a monoatomic element. Write out the full name of the gas.
When 6.40 g of CH3OH was mixed with 10.2 g of O2 and ignited, 7.50 g of CO2 was obtained. What was the percentage yield of CO2?
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