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What mass of SiC is formed from the complete reaction of 6.63 mol of carbon?
A galvanic cell Zn / Zn2+ // Cu2+ / Cu generates a current of 4.00 Amperes for 1.00 hour. The cathode increases in mass by 10.0g . If charge on an electron is 1.602 x 10-19 coulombs/ electron. Calculate the Avogadro's number using these experimenta..
what is the final temperature of this water/ethanol mixture? (Note: Assume there are no chemical interactions between the water and the ethanol that affect the temperature.)
Explain what would be the value for a phosphorus standard if it contained 0.035% KH2PO4 as well as if 0.2mL of the standard was used. Report in mmol/L
Assume the reaction A+B-->C+D proceeds to equilibrium. Calculate the equilibrium concentration of D at 25 o C, given that the staring concentrations of A and B are 2M and delta G for the reaction is 1.0 kcal/mol. R=1.987cal/mol.K
the activation energy for the following reaction is 60. kjmol.sn2 2co3 rarr sn4 2co2by what factor how many times
Which of the following is an accurate comparison of the properties of nitrogen and oxygen. A. Nitrogen uses more oxidation states in its compounds than oxygen does
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
compute the density in gcm3 of piece metal that has a mass of 0.400kg and a volume of 73cm3. how to work this problem
How many milliliters of 0.459 M HBrO4 are needed to titrate each of the following solutions to the equivalence point. (a) 21.2 mL of 0.505 M KOH mL (b) 30.7 mL of 0.551 M NaOH mL
a student carried out the experiment but did not follow the directions exacly as written. What effect would the following actions have on the experiment ?
what is the maximum mass of an object traveling at 241 m·s-1 for which the de Broglie wavelength is observable?
what is the pH of a Tris buffer (pka 8.1) prepared by adding 20 mL of 1M HCl to 100mL of a solution of 0.3M Tris
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