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One of the components of pineapple flavor is ethyl butyrate, which has the empirical formula (C3H6O)x. Its vapor took 162 seconds to effuse through a porous plug; the same amount of Co2 molecules effused through the plug in 100seconds under the same conditions. What is the molecular formula of the compound?
A fluoridated water supply contains F- at a concentration of 8.9 ppm. What is the maximum concentration of Mg2+ that can exist in this water supply without causing precipitation? The Ksp for MgF2 is 6.4×10-9. Answer in units of grams/L.
A 15.0 L flask contains 2.00 moles of N2 and 6.00 moles of H2 at 728 oC. A. Before any reaction takes place, what is the partial pressure of N2 in the flask?
You were given an unknown which gave precipiates with all four test solutions, 1 M H2SO4, 0.25 M (NH4)2C2O4, 1M K2CrO4 and 1M CH3COOH and 1M Na2CO3. Which of the four groups IIA metal cations are deffinitely absent from your unknown?
Epsom Salts is a hydrate, which means that a certain number of water molecules are included in the solid structure. The formula for epsom salt can be written as MgSO4* X H2O
What can we expect to be a few key differences between a jelly roll motif and an up and down barrel
The vapor pressure of pure liquid A at 300K is 575torr and that of liquid B at 300K is 390torr. The molar volume of A is 0.0262L/mol and that of liquid B is 0.0306L/mol. Calculate the final partial pressures of A and B in the gas phase.
Calculate the number of moles of carbon dioxide formed if 231 grams of calcium carbonate decomposes. CaCO3(s) ? CaO(s)+CO2(g)
Think back to what you learned in this course about solutions and intermolecular forces. Why don't these to "mix" together (in other words, make a homogenous solution) when combined. Why do they separate into layers
we will titrate 50.0ml of 0.200m nh3aq pkb 4.76 with 0.200m hclaq.a. what is the initial ph of 50.0ml of 0.200m nh3aq
Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C. Describe what you would observe under the following conditions.
What is the concentration of the Pb(NO3)2 in the voltaic cell pictured above when Ecell=0.524V at room temperature?
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