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How many nucleons does the most abundant isotope of the atom in Period 3, Group IIIA contain, if it is assumed that there are only two naturally-occurring isotopes separated by one nucleon? Express your answer as an integer.
the volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the
caluclate the molecular mass of the compounds of Caffeine and Epinephrine. Round to the hundredth's place.
When the ln( kE2 / kE1 ) is plotted vs. 1/T the resulting linear graph has the slope of - 4.8 and intercept of 6.1What is the difference in activation energies of the two mechanisms? For which mechanism are the reactive collisions more efficient?
given that CO2 makes up .0355% of the atmosphere what is the maximum concentration fo CO2 in H2O. Using Henrys law C=kP where k for CO2 = 2*10^-3
when 2 moles of mg3n2 are allowed to react with water to form ammonia gas and magnesium oxide how many moles of h2o are
On average, how many collisions between nitrogen molecules and oxygen molecules will occur in one second in 1.00 cm3 of air at 25oC and 1.00 bar
Assuming the solution has a heat capacity of 4.18 J/°C · g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
If 0.80 g of gas occupies 295mL at 25 degrees Celsius and 680 mm Hg of pressure, what is the molar mass of the gas?
The A and B reaction has a rate constant of 5 x 10^-2 min^-1 at 25 degrees Celsius. Calculate the concentration of A in the 10th minute of the reaction if [A]0 = 0.15 M.
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
What is the smallest number of packages of buns, packages of patties, and jars of pickles, respectively? Express your answer as three integers separated by commas.
We all face potential hazards in our workplaces and in our homes. Ideally we can eliminate or control many of these; however, if and when they occur, a Risk Assessment Plan is our best defense.
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