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Aqueous hydrochloric acid (HCl) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) as well as liquid water (H2O) . If 9.17g of water is produced from the reaction of 21.1g of hydrochloric acid also 43.6 of sodium hydroxide, compute the percent yield of water.
Many home barbeques are fueled with propane gas C3H8 What mass of carbon dioxide (in kg}) is produced upon the complete combustion of 18.9 { L} of propane (approximate contents of one 5-gallon tank)
To qualify to run in the 2005 Boston Marathon, a distance of 26.2 miles, an 18 year old woman had to have competed another marathon in 3 hours and 40 minutes or less. To qualify, what must a woman's average speed have been
a gas occupies a volume of 458 ml at a pressure of 1.01kpa abd temperature of 295 k. when the pressure is changed the
What would be the product of triphenylbromomethane with water if it was reacted in acetone/methanol
Calculate the pH of a 100.0 mL buffer that is 0.158 M HClO and 0.099 M NaClO after adding 1.0 mL of 5.9 M NaOH solution. (Ka for HClO given at 2.9*10^-8 and assume the volume change of added NaOH solution is negligible)
Explain how the formation of a soap ‘micelle' helps remove dirt and oil in an aqueous environment.
Thallium has an average atomic mass of 204.3833 u. It has two naturally occuring isotopes, 203Tl (with a mass of 202.9723 u) and 205Tl (with a mass of 204.9745 u). Find the percent abundance of the two isotopes, to ±0.001%.
A pesticide sprayer got stuck while trying to ford a stream flowing at a rate of 136 L/s. Pesticide leaked into the stream for exactly 1 hour and at a rate that contaminated the stream at a uniform 0.25 ppm of methoxychlor. How much pesticide was ..
The molar solubility of lead sulfide, PbS, is a 0.213 M ammonium sulfide solution is? The Ksp for PbS = 3.2 x 10^-28.
A molecular orbital in a diatomic molecule that has a nodal plane containing the internuclear axis and no nodal plane perpendicular to the internuclear axis is of
A student examined several 1L volume samples of a 10(-12) M solution. Explain what is the expected precision due to Poisson statistics?
The density of lead is 11.3 . The water level in a graduated cylinder initially at 205 rises to 290 after a piece of lead is submerged. What is the mass in grams of the lead?
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