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How many grams of sodium hydrogen phosphate and sodium dihydrogen phosphate are needed to make 300 mL of a 0.12 M phosphate buffer with a pH of 7.2?
How much energy in joules is lost or gained when one mole of 90Y with a mass of 89.907152 amu undergoes beta decay to produce 90Zr with a mass of 89.904703 amu
how many grams of ice at -20.5 degrees c can be completely converted to liquid at 16.3 degrees c if the available heat
How many moles of ammonia are produced when 20 moles of hydrogen react with 40 moles of nitrogen
The design calls for reheating the liquid after the temperature has dropped to seventy degree Celsius the determine about how many stags and how many heaters are required for this process?
A sample of gas has a temperature of 0 celsius and a volume of 453 m. At constant pressure, the temperature is raised to 100Celsius. What is the new volume
What is the percent hydrogen (H) by weight of a solution containing 53.5mL of CH3COCH3? The density of acetone is 0.788 g/mL.
when the concentration of epinephrine or glucagon is high, they bind to receptors on adipose cell membrane and all of the following can be expected to occur
Determine the molarity of the NaOH(sodium hydroxide) solution. In an acid-base titration, 22.13 mL of a sodium hydroxide solution are required to neutralize 24.65 mL of the potassium hydrogen phthalate solution?
Nitrogen monofluoride, NF, can serve as a ligand in transition-metal complexes. a. Prepare a molecule orbital energy-level diagram of the NF molecule, showing clearly how the atomic orbitals interact.
at 30 km above the earths surface (roughly in the middle of the statosphere) the pressure is roughly 0.013 atm and the gas density is 3.74 x 10^23 molecules/m^3 assuming N2 is represetative of the stratosphere using the collisional diameter inform..
write contributing important resonance structures for each of the followingcompounds and predict their relative co
avogadros number is big. if you had 6.02 x 1023 dollars and could spend it at 1 billion 109 per second for your entire
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