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A breathing mixture used by deep-sea divers contains helium, oxygen and carbon dioxide. What is the partial pressure of O2 at 101.3 kPa total pressure if the partial pressure of He = 84.0 kPa and the partial pressure of CO2 = 0.1 kPa?
How many grams of CaCO3 are produced when you react 55.2 mL of 0.150 M Ca(NO3)2 with 0.655 grams of Na2Co3?
What is the final concentration (in M) of 18.5 mL sodium chloride solution with an initial concentration of 1.78 M which is diluted with 15 mL of solvent? Assume the volumes are additive.
Ice has the unusual property of a melting point that is lowered by increasing pressure. if this is the reason we can skate on ice, would a 75-kg skater whose skates contact the ice with an area of 0.1cm^2 be able to skate at -3C
What role do the potassium chloride (KCl) and potassium sulfate (K2SO4) play in this experiment
If all the species are at standard conditions except [H+], at what pH will this reaction have a potential of zero? The standard reduction potentials are 1.78 V for H2O2 and 1.36 V for Cl2.
what is the flow of the gulf stream in milliters per minute (b) what mass of water in the gulf stream flows past a given point in 24 hours? the density of seawater is 1.025 g/ml
a sample of gas at 77 degreees celsius and 1.03 atm occupies a volume of 2.02L. What volume would this gas occupy at 107 degreees celcius and 0.789 atm.
find the value of pressure.1. a gas in a sealed container has a pressure of 111 kpa at a temperature of 50.0degc. if
the electron shifts resulting in the ring closure. draw diagrams of the products.
A quality control chemist at Dow Chemical tried to determine purity of NaOH using titration.He measured out 0.500 g NaOH sample, and dissolved it in 20 mL water. 31.2 mL of a 0.386 mol/L HCl solution was used to reach the end point.
Consider the following grayscale electrostatic potential map. the region are labeled as to color. which atom is the most likely to be attacked by a nucleophile choose from the answers provided. (a) 1 (b) 2 (c) 3 (d) 4
Compare the heat produced by the complete combustion of 1 mole of methane (CH4) with a mole of water gas (0.50 mole H2 and 0.50 mole CO) under standard conditions
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