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Dry Sand has a density of 1.5g cm^-3. A child's sandbox measuring 4 ft by 5 ft is filled with sand to a depth of 6 in. What is the mass of the sand in kg? in lb?
An unknown metal with a mass of 28g absorbs 58J of heat. Its temperature rises from 31.1C to 39.9C. Calculate the heat capacity of the metal ?
What is the daily rate, in gallons and lbm, at which octane is used? (b) What is the variation in absolute pressure at the bottom of the tank in inches of mercury?
what we observed that 1.00 mole Hydrogen, 1.00 mol Iodine and 1.00 mole hydrogen iodide are introduced into a container of capacity 1.00-L. compute the concentrations of each species if equilibrium is reached?
Calculate the number of moles of NaHCO3 that reacted in each beaker. (The molar ratio between evolved CO2 and the bicarbonate is 1:1.
Calorimetry is a method used to measure enthalpy, or heat, changes that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters
When the equation below is properly balanced, the correct sequence of coefficients is? NaCl(s) + SO2(g) + H2O(l) + O2(g) NaSO4(s) + HCl(g)
Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
A 32.0 iron rod, initially at 22.0C, is submerged into an unknown mass of water at 63.7C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 59.4C.
Would a buffer containing HF and F- in appreciable quantity be expected to have a pH of around 3,5,7 or 9? Justify your answer.
energy to heat a certain sample of pure silver from 12.0 C to 18.2 C. Calculate the mass of the sample of silver.
The random walk model used to describe gas diffusion can be treated as a binomial distribution similar to coin flips with a 50/50 chance that a particle will move in either the +x direction or the -x direction.
175g pure H2O was placed in a constant-pressure calorimeter and chilled to 10C 9.8g pure H2SO4 (also 10C) was added, stirred and the temperature rose to 19.8C.
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