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How many water molecules are in a block of ice containing 0.750 mol of water (H2O), Please show complete breakdown of answer
Calculate the binding energy of the 2s electron in iron and calculate the binding energy of the 2s electron in iron. Does the new energy agree better with experiment?
Calculate the pH of a buffer solution made by adding 10.0g of anhydrous sodium acetate (NaC2H3O2) to 100 ml of 0.100M acetic acid.
If copper has a photoelectric threshold wavelength of 279 nm, calculate the velocity (m/s) of the electron emitted when copper is illuminated with light with a frequency of 2.33 × 1015 Hz. Express answer in scientific notation.
If 2.45 g of X reacts with 6.55 g of M to produce 11.25 g of a compound with the formula M2X3, and the atomic mass of M is 42.0 amu, what is the atomic mass of X
How many grams of Cu(OH)2 will precipitate when excess KOH solution is added to 63.0 mL of 0.610 M CuSO4 solution.
What is the reaction mechanism (detailed with arrows) for trans-cinnamaldehyde when reacted with benzyltriphenylphosphonium chloride?
The density of lead is 11.4 g/cm3 at 25°C. Calculate the volume occupied by 25.0 g of lead.
The Ka of acetic acid is 1.85 x 10-5. What would be the pH of a buffer prepared by mixing 50.0 mL of 1.0 M potassium acetate with 50.0 mL of 1.0 M acetic acid?
Strong base is dissolved in 615 mL of 0.400 M weak acid (Ka = 4.50 × 10-5) to make a buffer with a pH of 3.95. Assume that the volume remains constant when the base is added.
Europium (Europium is a chemical element with the symbol Eu and atomic number 63 )crystallizes in a body-centered cubic lattice compute the unitcell edge length in pm if The density of Eu is 5.26 g/cm3..
How many nucleotides are needed to code for a polypeptide with eleven amino acids
calculate the volume of 19.4 M sulfuric acid that must be added to water to prepare
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