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How many moles of carbon (C) atoms are equivalent to 38.1 g C?
How many atoms are in a sample of 68.7 grams copper (Cu)?
How many moles of cesium (Cs) atoms are in 675 g Cs?
What is the mass of 1.7 × 1023 atoms of zinc (Zn)?
What is the mass, in grams, of a sample of 1.20 × 1022 atoms of mercury (Hg)? Show your work or explain the steps that you used to determine your answer.
By how much is the oxidizing power of MnO4-/Mn2 couple decreased if the H concentration is deceased
Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.052 moles of sulfuric acid is mixed with water to make 179 mililiter of solution, what is the molarity of H+?
63mL of a 1.70 M solution is diluted to a volume of 218 mL. A 109mL portion of the solution is diluted using 117mL of water. What is the final concentration?
Calculate the intermolecular collision frequency and the mean free path in a sample of helium gas with a volume of 5.0 L at 27 degrees Celsius and 3.0 atm.
What are the potential effects of exposure to nitric acid? Consider all different modes of exposure listed on the MSDS.
What is the % efficiency of the separation? (i.e. If X represents the anion that precipitates first, then what fraction of X was precipitated from the solution at the instant the second precipitate starts to form?)
Calculate w (in kJ) when 376 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 335 K:
A conversion factor is a(n) used to express a quantity in different units of measurement. Multiplying by a conversion factor is the same as multiplying because the numerator and denominator are equivalent.
What is the rate of entropy generation within the tank? 3.) If we duplicated the stream conditions (temperatures, pressures, and flowrates) with an internally reversible process, what is the maximum rate at which work could be obtained?
Sodium methoxide reaction: Pipet 1.65 mL of a 25% (by weight) solution of sodium methoxide in methanol into a 10 mL reaction flask.
how many moles of AlCl3 is that b.) How many moles of NaOH is that c.) Which is your limiting reagent d.) How much (in grams) solid Al(OH)3 is formed e.) What is the concentration of NaCl in the Erlenmeyer flask (total volume = 50.00 mL)
A carboxylic acid favours the ion form (R-COO-) and its pH is higher than its pKa. In most membranes, the polar heads of the phospholipids align towards the middle of the membrane.
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