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The speeds of 12 particles (in cm/s) are: 0.5, 1.5, 1.8, 1.8, 1.8, 2.0, 2.5, 2.5, 3.0, 3.5, and 4.0.
Find a) the average speed, b) the root-mean-square speed, and c) the most probable speed of these particles. Explain your results
A 100.0 g sample of a metal M is burned in air to produce 103.7 g of its oxide with the formula M2O. What is the atomic mass of the metal?
A metal crystallizes in a face-centered cubic lattice. The radius of the atom is 128 pm and the density of the element is 8.92 g/cm3. What is the identity of the metal?
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
A beaker with 185 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.70 mL of a 0.440 M HCl solution to the beaker.
Calculate the number of moles of H2O that will be produced by the reaction of .530 moles of solid Al(OH)3 with excess aqueous HClO3
How many grams of MnSO4 can be prepared from the reaction of 15.0 g of KMnO4 with 22.6 g of H2SO3.
Calculate the initial volume of a sample of a gas if its final volume is 344 mL after being heated from -10 °C to 40 °C.
The work function for mercury is equivalent to 435 kj/mol photons. When light of 205nm strikes a mercury surface,the kinetic energy is 2.47x10^-19 J/photon. What is the velocity of the ejected electrons in m/s?
for the reaction P4+S8=P4S10 what is the maximum amount of P4S10 which could be formed from 17.02 g of P4 and .128 mol of S8?
What is the percent yield of a reaction in which 111.6 g phosphorus trichloride reacts with excess water to form 60.8 g HCl and aqueous phosphorous acid (H3PO3)?
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740.0 torr and a temperature of 25.0°C.
If 22 mL of 5.6 Molarity was spilled, what is the minimum mass of that must be added to the spill to neutralize the acid?
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