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Calculate the number of moles of gas contained in a 0.325 L tank at 19C and 0.914 atm (R=0.08206 L atm/K mol)?
Thr specific heat of water is 4.184 J/gc, calculate to the correct number pf significan figures the number of joules needed to raised the temperature of 2.5 g pf water from 27C to 72C?
In the gas demdity lab, you used the dumas method to find the molar mass of an unknown sample. For this method to work all of the following must be true except:
a) must be weighted after it recondenses
b) must behave like an ideal gas whent vaporized
c) must have a lower of point than that of water
d) must be placed in a flask of unknown volume
e) none of the above
Question- The phosphate buffer in this lab utilizes the second acidic proton from the triprotic phosphoric acid, H3PO4. The components of the buffer include a weak acid, H2PO4- and its conjugate base HPO4 2-.
Draw a circuit diagram that has two resistors in series with a DC voltage source. If resistor one (R1) is 758 kohms and resistor two (R2) is 712 kohms, then what is the current flowing through the circuit if the voltage is 8.49 V?
Explain if a total of 13.5 mol of NaHCO3 and 4.5 mol of C6H8O7 react, how much moles of CO2 and Na3C6H5O7 will be produced
How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.
If you react 40.00 grams each of NO and O2, how many grams of NO2 will form? After you performed the experiment as in above, you obtained 30.22 grams of NO2. What is the percent yield?
The microorganisms in a waste treatment pond are exposed to 35 mg/L of easily degradable organic compounds with a typical composition C5H10O5. The standard molar Gibbs energy of formation of these compounds is -2797 kJ/mol.
Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is 58.9332 amu. A synthetic radioactive isotope of cobalt, 60Co, has a relative atomic mass of 59.9338 amu and is used in radiation therapy for cancer treatm..
Calculate the mass of sodium hydroxide needed to to prepare 100 mL of a 0.10 M solution?
Which value is closest to the pOH of a 0.30M solution of the weak base methylamine (CH_3_NH_2_). The Ka for the acid form of methylamine (CH_3_NH_3_+) is 2.27E-11.
The burning of 2.051g glucose, C6H12O6, in a bomb calorimeter causes the temperature of the water to increase from 24.92 to 31.41 degrees Celsius. The bomb calorimater has heat capacity of 4.912 kJ/degree Celsius.
Question- Calculate the activation energy (in joules) for a reaction whose rate constant doubles when the temperature is raised from 298K to 500K.R = 8.314 J/mol-K.
we will provide a standard solution of 0.100 m nacl and a solution of 20-fold diluted tonic water the unknown for your
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