Thursday
May 23, 2013

# Posts by April

Total # Posts: 449

History
Wrong answer, i took the test and put that as the answer and it was marked wrong.

chemistry:)
The bond enthalpy of the Br–Cl bond is equal to DH° for the reaction BrCl(g)-> Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br–Cl bond. Br2(l)--->Br2(g) ÄH=30.91 KJ/mol Br2(g)--->2Br2(g) ÄH=192.9 KJ/mol Cl2(g)---->2...

CHEM:
The bond enthalpy of the Br−Cl bond is equal to ƒ¢H‹ for the reaction BrCl(g) ¨ Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br−Cl bond. Br2(l)--->Br2(g) ƒ¢H=30.91 KJ/mol Br2(g)--->2Br2(g) ...

CHEM
4.69 of S is reaction with oxygen calculate the volume of SO2 in mL formed at 33 degrees C and 1.14 atm

physics
(1) If an electromagnetic wave has a period of 4.8 μs, what is the frequency and wavelength? I know how to find the frequency but for the wavelength how can we find it without the velocity being given???? (2) The beam of a helium-neon laser (λ = 632.8 nm) is incident...

Algebra 1B
it took a small plane 3 hours more to fly 475 miles against the wind than it took the same plane to fly the same distance with the wind. the rate of the wind was 15 mph find the rate of the plane in calm air

chemistry
M=moles of solute/L of solution Solute- ammonia NH3 Solvent- .1L H2O Convert grams of NH3 to moles by dividing it by the molar mass. Then you plug that into the problem and solve.!

SUPER URGENT-- CHEMISTRY
REALLY, dude?

Chemistry
1. As I understand it--As an acid is added to neutral water the (OH-) will...decrease?? Is this right? 2. If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 L of distilled water, what would be the concentration of the OH-?...I think this would be a pOH...

Chemistry
As I understand it--As an acid is added to neutral water the (OH-) will...decrease?? Is this right?

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