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Define a flask contains 250ml of a 0.125 solution of Na3PO4. If A sample containing 0.250 moles of Na+ is added to the solution. Presuming no volume change, define what is the new molarity of the new solution?
The ideal gas law (PV=nRT) provides relationships among pressure, volume, amount, and temperature of a gas inside a container. If the Kelvin temperature in a container is doubled, which of the following changes may occur?
If 405 mL of a gas at 66 degrees Celsius and 595 mm Hg weighs 1.495g, what is the molecular weight of the gas?
how many grams of sodium oxide will be formed if 46 grams of sodium are used in the reaction. 4Na + O2 yields 2Na2O
carotenoids present in all organisms capable of photosynthesis extend the range of light absorbed by the organism. they
Methyl-m-nitrobenzoate is an excellent (identification) derivative of methyl benzoate. What are the properties of methyl-m-nitrobenzoate that makes it an excellent derivative of the starting ester
You Have 500 mL of a buffer solution containing .2 M CH3COOH and .3 M CH3COONa. What will the pH of this solution be after the addition of 20 mL of 1.00 M NaOH solution? (Ka=1.8x10^-5)
The density of an unknown metal is 8.94 g/cm3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice. Find the atomic weight of this metal
solar radiation is 1200 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
Jacob carelessly added only 40.0 mL (instead of the recommended 50.0 mL) of 1.1 M HCl to the 50.0 mL of 1.0 M NaOH. Explain the consequence of the error.
what is the relative probability (pB/pA) that the protein wil be in state B vs state A?
If 25.0 grams of potassium chlorate decomposes, how many grams of gas are released as a product?
Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
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