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Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. What is the kinetic energy of an electron (in J) that is ejected from sodium by light with a wavelength of 491 nm?
Determine the molar amounts of NO, O2 and NO2 after a complete reaction. NO=? O2=? NO2=?
Lauryl alcohol, C12H25OH, is prepared from coconut oil; it is used to make sodium lauryl sulfate, a synthetic detergent. What is the molality of lauryl alcohol in a solution
A 28.0-g sample of nitrogen gas combines completely with 6.0 of hydrogen gas to form ammonia. What is the mass of ammonia formed.
In a titration, 10.0 mL of 0.025 M hydrochloric acid is added to 30.0 mL of 0.030 M ammonia. What is the pH of the resulting mixture?
What is the percent yield of ammonia when 150.0 g of nitrogen reacts with 32.1 g of hydrogen if the actual yield is 174 grams?
Gurmt wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so
2C8H18(g) + 25O2(g) --> 16CO2(g) + 18H2O(g) 0.400 mol of octane is allowed to react with 0.600 mol of oxygen. Which is the limiting reactant?
calculate the number of moles of gas generated when 0.165grams of aluminum reacts with hydrochloric acid
Express the concentration of a 0.0280 M aqueous solution of fluoride in mass percentage and in parts per million.
What is the concentration of iron in the steel sample? Express your answer as grams of Fe per grams of steel (g Fe2 / g steel).
If 7.63 of an unknown gas occupies 79.1mL at 25.02 degrees celcius and 7.55 atm of pressure, what is the molar mass of the gas? R=0.0821
Why are the products attached to C3 of 1,4 pentadiene more acidic than the methyl hydrogen atoms of propene? Maybe you can help me with this one. Are the C3 atoms more acidic because there is more s character involved with the atoms and as the s ch..
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