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If 2.00 g of helium gas and 4.00 g of oxygen gas are mixed together what is the molefraction of helium in the solution?
[A] 0.333
[B] 0.800
[C] 0.200
[D] 0.500
[E] 0.666
Calculate the statistical mechanical values of Internal Energy, Entropy, Gibbs Energy, Enthalpy and Cvm for H2 (g) at 3000 K.
After 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32 ?
Draw the structure(s) of the alkene(s) with the molecular formula C6H12 that have two methyl branches on the same carbon.
A canister with a volume of 694 L contains how many moles of oxygen at STP. A chemical reaction produces 138 mol of HBr gas. What volume will that gas occupy at STP
Mass spectral analysis of 1-chloropropane results in several fragmentation pathways. Complete the mechanism below and give the products for each indicated fragmentation pathway. Include all nonbonding electrons and charges.
For the reaction: 2 B5H9(l) + 12 O2(g) ? 5 B2O3(s) + 9 H2O(l) , ?Hrxn = -9.04 kJ. If 3.00 moles of B5H9 react, how much heat is released
Ksp for MgCO3 at 25C is 2.0x10^-8. What are the molar concentrations in a saturated solution at this temperature
If the particle behaves classically as in the limit of very larger values. Explain what would be the probability of finding it between 0.30a and 0.36a. Compute the probability of finding the quantum mechanical particle between 0.30a and 0.36a for ..
When 14.0ml of HCl of unknown concentration (but less than that of the base) are reacted with 15 ml of 3.218M NaOH, 2.01KJ of heat are released. What is the molarity of the HCl solution
Question- Consider the following reaction: CO(g)+2H2(g)?CH3OH(g) A reaction mixture in a 5.18?L flask at a certain temperature contains 27.1g CO and 2.33g H2. At equilibrium, the flask contains 8.65g CH3OH.
some people like to pour beer gently down the side of the glass to preserve bubbles.nbsp others splash it down the
a laboratory sample of gas is known to have a carbon monoxide concentration of 50 ppm. a spectrophotometer is used to
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