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Magnesium has 3 stable isotopes with masses of 23.98504 u, 24.98584 u respectively. If the percent abundance of magnesium-25 is 10.13%, What are the percentages of the other two isotopes?
Molecular beacons are nucleic acid strands that form hairpin loops. The stem region hybridizes to close the loop and the binding energy is ΔG = -22kJ/mole at 37°C.
Using kinetic molecular theiry of gases to explain each of the following: a) A container of nonstick cooking spray explodes when thrown into a fire; b) The air in a hot air balloon rise. c) You can smell the odor of cooking onions from far away.
3NaHCO3(aq) + H3C6H5O7(aq) → 3CO2(g) + 3H2O(l) + Na3C6H5O7(aq) How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0119 mol of NaHCO3 is dissolved?
The cup is a volume widely used by cooks in the U.S. One cup is equivalent to 225 cm3. If 1 cup of olive oil has a mass of 205 g, what is the density of olive oil in g/cm3?
Find the moment of inertia about the x-axis of the lamina that has the given shape and density (rho). Round in the thousandths place. y = x^2, y = sqrt(x); rho(x, y) = x^2
What volume of oxygen, in ml, would be produced at STP (0 degrees C and 1.00atom) by the decomposition of 3.428g of sodium chlorate, according to 2NaClO3(s) -> 2NaCl(s) + 3O2(g)
draw the organic product you would expect to obtain from reaction of the following model triglyceride
Propose a reaction sequence for the conversion of benzoic acid into phenylacetic acid. No need for mechanisms
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
In a 1cm cuvette, you measure a sample with an absorptivity constant of 10 L/mol•cm. The absorbance of the sample is 0.5. What is the concentration of the sample in moles/L
When 0.204 moles of (NH4)3PO4 in enough water to make 1.00 L of solution, what is the total concentration of all ions present in solution?
a 2.00 g peanut is burned in a bomb calorimeter containing 1400 g of water. the temperature of the water increases from
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