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To determine the volume of a gas using ideal gas law.
What volume will 5.6 moles of sulfur hexafluoride (SF6)gas occupy if the temperature and pressure of the gas are 128 degrees C and 9.4 atm?
To determine the number of moles of a gas using ideal gas law.
A sample of nitrogen gas kept in a container of volume 2.3L and at a temperature of 32 degrees C exerts a pressure of 4.7 atm. Calculate the number of moles of gas present.
Draw the molecular structure of three monomeric units of the addition polymer that results from polymerization of acetylene. Only show the structure that would be found inside the brackets of a condensed formula for this polymer
Compound Y absorbs 2 equivalents of hydrogen when reduced over a palladium catalyst to give Z (C14H14) and reacts with ozone to give one product, benzoic acid (C7H6O2). Draw the structure of compound Z
Find the pH of a 0.130 M solution of a weak monoprotic acid with a Ka value of 1.6 *10(to the power of -6)
A vessel contains 0.90g liquid H2O in equilibrium with water vapor at 30C. At this temperature, the vapor pressure of H20 is 31.82 torr. What volume increase is necessary for all of the water to evaporate'
Briefly describe the pathway of the protons and electrons of two hydrogen atoms that come from NADH/H+ and pass through the electron transport chain apparatus (including complexes I - V). What are the major electron carriers within these complexes
What biochemical changes are required to convert tyrosine to (a) norepinephrine and (b) epinephrine? and 3- Some bacterial signaling systems involve kinases that transfer a phosphoryl group to a His side chain. Draw the phospho-His side chain.
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
How much heat (in ) is required to warm 12.0 g of ice, initially at -11.0 degrees C, to steam at 111.0 degrees C? The heat capacity of ice is 2.09 and that of steam is 2.01 J/gC.
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption (or lack thereof) by an n=1 electron.
Consider the reversible reaction: A(g) 2B(g) At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
What mass of concentrated sulfuric acid (98.0 % H2SO4 by mass) must be used to react completely with 164.9 g of Ca3(PO4)2
The rate of disappearance of HBr in the gas phase reaction 2HBr (g) → H2 (g) + Br2 (g)
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