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How many moles of helium gas are in a balloon if the temperature of the gas is 15.0 °C, the volume is 1.5 L and the pressure is 652 Torr?
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
Calculate the number of moles and the number of grams of the indicated solutes present in each of the following solution samples.
What are the major species present in 0.250 M solutions of each of the following acids. Calculate the pH of each of these solutions.
A certain metal hydroxide, M(OH)2, contains 32.8oxygen by mass. What is the identity of the metal
Given 20g of each of the gases co2, h2 and Ne in a flask with a totally pressure of 2.50 atmm what is the partial pressure of each gas
Ammonia is made industrially by reacting nitrogen and hydrogen under pressure, at high temperature, and in the presence of a catalyst. The equation is N2(g)+3H2(g)---->2NH3(g). If 4.0mol of H2 react, how many moles of NH3 will be produced.
Describe the detailed structure of DNA and explain the manner in which this structure replicates itself in both prokaryotes and eukaryotes
When iron (Fe) crystallizes, it forms body centered cubic cells. The unit cell edge is 287 pm. Calculate the density of iron in g/cm cubed
What mass of benzoic acid, would you dissolve in 300.0 of water to produce a solution with a = 2.75?
Combustion analysis of toluene, a common organic solvent, gives 4.12mg of {\rm{CO}}_2 and 0.959mg of {\rm{H}}_2 {\rm{O}}. If the compound contains only carbon and hydrogen, what is its empirical formula
Provide the reagents necessary for the following syntheses. More than one step may be required. (a) (b) (c) (d) (e) (f)
Considering the structure of ferrocene and acetylferrocen, identify what interparticle/ intermolecular forces are present between these ferrocenes and the mobile phase. How do they help explain the order in which the ferrocenes come off the alumna..
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