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365 mL sample of 0.6658 M HNO3 is mixed with 439 mL NaOH with pH=13.97. What is the pH of the resulting solution?
Ethanol has {rm mp} = -114.5 ^circ {rm C}, {rm bp} = 78.4 ^circ {rm C} , Delta H_{rm vap} = 38.56 {rm kJ/mol} and Delta H_{rm fusion} = 4.60 {rm kJ/mol}. The molar heat capacity is 113 {rm J / left( K cdot mol right)} for the liquid and 65.7 {rm J..
What maximum mass of carbon dioxide is produced by the complete combustion of 10.0 kg of this fuel?
calculate the final temperature of a mixture of 130.0 g of ice initially at -22.5 Celsius and 310.0 g of water initially at 80.5 Celsius.
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
An element has two isotopes with masses of 62.9396 u and 64.9278 u,and 30.83% of the atoms are the heavier isotope. Calculate the atomic mass of this element and give its name and symbol.
Calculate the pressure and the temperature of the compressed gas. In a diesel engine the compression ratios are typically much higher; redo the same calculation for the compression ratio of 20:1.
The enthalpy of fusion of methanol (CH3OH) is 3.16 kJ/mol. How much heat would be absorbed or released upon freezing 25.6 grams of methanol?
Which electrode gains mass and which loses mass as the cell reaction proceeds? What is the equation for the equation for the overall cell reaction?
The following reaction is exothermic (H= -226 kJ) and has a rate law: Rate = k(NO2)^2: NO2 + CO ? NO (g) + CO2 (g) for each of the following disturbances, indicate whether the rate of the reaction will be FASTER or SLOWER and indicate whether ther..
Predict the likely mode of decay for the following isotopes used as imaging agents in nuclear medicine (choose all likely modes od decay- can have multiple answers for each and may be used multiple times):
The student ended up calculating that he/she has 2.19 ppm of Vitamin B2 in the diluted sample. Calculate the percent of the RDI of Riboflavin satisfied by consuming this tablet
Its activation energy is 262 kJ/mol. At 477 celcius its half life is 5 minutes. What is its half life at 527 celcius (in seconds)?
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