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An ocean wave has a wavelength of 4.000 meters and a frequency of 7.00 waves per minute. What is this wave's velocity in meters/minute?
A student places 2.0 moles of methylamine in 500ml of water. what is the pH? the Kb of methylamine is 4.4x10^-4.
consider two closed containers. container x is a 2 l container that contains 0.5 l of acetone. container y is a 3 l
Tires in a bike have been filled to a pressure of 53.0 psi at 19.0 deg C. after riding around for a while, the volume of the tire increased by 2% & the temp was now 32 deg C. whats the new pressure in psi
Calculate the mass of NaHCO3 that was used up in the reaction for each beaker. The molecular weight of NaHCO3 is 84.007 g/mole.
3H2 (g) + N2 (g) 2NH3(g), Kc = 6.0 × 10-2 at 500°C for this nitrogen fixation reaction. What is the equilibrium concentration of N2 If 0.250 M H2 and 0.050 M NH3 are present at equilibrium?
What concentration of sodium formate, NaHCO2, is needed for a buffer solution at a pH of 3.62, if it contains formic acid, HCO2H, with a concentration of 0.150 M.
how many grams of calcium chloride will be Produced when 26 g of calcium carbonate are combined with 13.0 g of hydrochloric acid. Which reactant is in excess and how many grams of this reactant will remain after the reaction is complete
Which SUBSTANCE in the following would NOT NEED to be included in an enthalpies of formation table
Calculate the number of moles in each of the following: a) 85.2 g of Ni, b) 144 g of K, c) 6.4 g of H2O, d) 308 g of BaSO4, e) 252.8 g of fructose C6H12O6
a balloon is filled to a volume of 7.00x102 ml at a temperature of 20.0 degrees c. the balloon is then cooled at
Consider that sodium hydroxide is added to acetic acid (CH3COOH). What is the direction of equilibrium and by how much. Pka of Sodium Hydroxide
What mass of cesium bromide must be added to .500 L of water (d=1.00g/mL) to produce a 0.144 m solution
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