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What radioactive isotope emits a beta particle to give magnesium-24? a. sodium-24 b. silicon-28 c. aluminium-24 d. magnesium-25
Calculate the change of entropy for the system when 2.00 moles of a diatomic ideal gas is changed from 25 degrees celsius and 1.5 atm to 135 degrees Celsius
Compute the wavefunction and the probability to tunnel, for a proton in the potential: V(x)=0, when x 0.00 nm, and V(x)=2.0*10-19 J otherwise. Consider this wavefunction to have a total energy of 1.2 eV, and its functional form in the x>0.00 regio..
What happens if student forgets to rinse the buret with a small portion of EDTA solution. (Buret contains water droplets from washing.) If this incorrect concentration of EDTAis used to calculate the ppm CaCO3
What concentration of the salt NaC2H3O2 must be added to shift the equilibrium toward the reactants so that the [H3O+] concentration is reduced to pH = 5.5
What is the mole fraction of solute and the molal concentration for an aqueous solution
A piston has an external pressure of 8.00 \rm atm. How much work has been done if the cylinder goes from a volume of 0.170 liters to 0.530 liters.
A reaction is second-order with respect to the reactant R. Which of the following plots will produce a straight line? A) [R] vs. 1/time B) 1/[R] vs. time C)[R]2 vs. time D)1/[R]2 vs. time E) In[R] vs. time
A boiler is used to heat steam at a brewery to be used in various applications such as heating water to brew the beer and sanitizing the brewing tanks. 81.0% of the heat produced by the boiler is used to create saturated steam at 18.0 bars (absolu..
An oxide of manganese consists of 77.4% manganese by mass. Determine its empirical formula and enter it in the box below.
The buret is filled with the NaOH titrant and the initial volume reading is immediately recorded without waiting the recommended 10-15 seconds.
Dinitrogen pentoxide is a product of the reaction between P4O10 and HNO3. Balance this reaction and calculate the theoretical yield of N2O5 if 79.7 g of P4O10 are reacted with excess of HNO3.
Wet steam flows in a pipe at a pressure of 700 kPa. To check the steam quality, the wet steam is expanded to pressure of 100 kPa. The expansion process may be assumed to be isenthalpic
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