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In section 4.2 we saw that the probability of finding all Helium atoms in half of the cylinder is 8x10-31. Presuming that the age of the universe is 13 billion years, Compute the time in seconds during which this event can be observed
Atrazine is an herbicide widely used for corn and is a common groundwater pollutant in the corn-producing regions of the United States. The log Kow for atrazine is 2.65.
If 5 g of sodium metal reacts completely with excess chlorine gas, an 11.5 g of Nacl is actually obtained what is the precent yield. I know that the actual yield. How do i find the theoretical yield so I can put it in the percent yield equation.
if the activation energy is 151 kJ/mo, calculate the temperature at which its rate constant is 7.45 x 10^-4 s^-1
For the unbalanced equation Cl2 ++ KI = I2 + KCl - how many moles of the second reactant would be require to react exactly with the 0.275 mole of the first reactant
what is the ksp value of potassium hydrogen tartrate at 10 degree celsius oc 22oc 35oc and 50oc? what is the enthalpy
Draw a quantitative predominance (pH-pC) diagram for the system of 10^-4 M benzoic acid.
Ammonia burns in oxygen according to: 4NH3(g) + 7O2(g) ? 4NO2(g) + 6H2O(l) ??H?_rxn^o=-1396 kJ given ?H_f^o(NH3)g = -46 kJ/mol and ?H_f^o(H2O)l = -286 kJ/mol the heat of formation of NO2(g) ?H_f^o(NO2)g (in kJ/mol) is: A) +48 B) -48 C) +34 D) -29
If a 0.500g sample of a potassium nitrate mixture is decomposed by heating, what is the milliliter volume of oxygen gas released at STP
The few gas analysis shows as carbon dioxide 14%, carbon monoxide 0.4%, oxygen 5.6% and nitrogen 80%. The air used has a dew point of 50°F. The barometer shows 29.9 inches of mercury. Calculate the dew point of the stack gas.
What is the pressure (in atm) inside a container of gas connected to a mercury filled open-end manometer when the level in the arm connected to the container is 28.3cm higher than the level in the arm open to the atmosphere,
What is the maximum volume (at STP) of butene gas that could be obtained from the reaction of 1-bromobutane with KOH if all of the 1-bromobutane is converted to butene
can you predict the strength of an acid or base assuming you know its an acid or base before hand based on the number
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