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Calculate the pressure (in pascals and atmospheres) exerted by a mass of 1.0 kg pressing through the point of a pin of area 1.0 x 10-2 mrrr' at the surface of the Earth. Hint. The force exerted by a mass m due to gravity at the surface of the Earth is mg, where g is the acceleration of free fall (see endpaper 2 for its standard value).
In an experiment for measuring water hardness in a water sample, using Atomic Absorption Spectrophotometry, I obtained a value of 173.74 ppm hardness for my water sample.
When adding the solution of HNO3 from the buret in Step 14 to beaker 4, you know that you added 2.5 mL instead of 1.5 mL for a total volume of 11.0 mL. How would the calculated value of the equilibrium constant be affected for this sample?
For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 40.°C to 19°C
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2094
if you burn 40.7 g of hydrogen and produce 364g of water, how much oxygen reacted?
Calcium hydroxide, Ca(OH)2, has a solubitlity of 1.85 g/L at 0.0 C. What is the solubility product constant (Ksp) for a saturated solution of Ca(OH)2 at 0.0 C
A synthesis gas analyzing 6.4% CO2, 0.2% O2, 40.0% CO, and 50.8% H2, (the balance is N2), is burned with 40% dry excess air. What is the composition of the flue gas
An aqueous solution of hydroiodic acid is standardized by titration with a 0.182 M solution of barium hydroxide. If 17.7 mL of base are required to neutralize 21.9 mL of the acid, what is the molarity of the hydroiodic acid solution
Draw the molecular-orbital-energy level diagram for the SO molecule and the NF molecule
An acre-foot of water Covers an acre to a depth of exactly 1 ft. An acre is 4840 yd2. An acre- foot is enough water to supply two typical households for 1.00 yr. (a) If desalinated water costs $1950 per acre- foot, how much does desalinated water ..
If atmospheric pressure suddenly changes from 1.00 atm to 0.898 atm at 298 K, how much oxygen will be released from 3.10 L of water in an unsealed container?
Describe clearly why a single indicator solution in only useful for measuring pH over a rather narrow range. Use a specific indicator of solution
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