Homework Help: EXAM TMRW

Posted by plz chk my answers for Chemistry on Monday, December 1, 2008 at 5:11pm.

Calculate the energy in kJ/mol of light with a wavelength of 360 nm.

9.17 * 10^-43 J/mol

Oxygen gas at 34.5 °C expands from 34.5 L to 45.7 L against a
constant pressure of 750 mmHg. What is the work done in
joules by the system?

1.13*10^3 J

EXAM TMRW - Shaniquaa, Monday, December 1, 2008 at 5:40pm
for the first one I got 332 kJ/mol
E = hc/lamda
E = (6.626E-34)(2.998E8)/(360E-9)
E = 5.522 J
To convert it to kJ/mol, multiply by 6.022E23 and divide by 1000 to get 332 kJ/mol

Answer this Question

Related Questions

AP Chemistry - A mixture of argon and mercury vapor used in advertising signs ...
CHEM please!!! help - Calculate the lattice energy of potassium oxide from the ...
chemistry please help - Calculate the lattice energy of potassium oxide from the...
AP Chem - The energy change H associated with the reaction NBr3(g) + 3H2O(g...
Chemistry - If H for the reaction I2 (s)  2I (g) is 153...
Chemistry - The ionization energy of hydrogen is 1313 kJ/mol. Covert this energy...
Chemistry - Calculate the wavelength of light if 1.50 mol of photons has an ...
Chemistry - "Given that the bond enthalpy of the carbon-oxygen bonds in ...
chemistry - calculate the lattice energy of sodium oxide (Na2O) from the ...
ap chem - calculate the lattice enthalpy of potassium fluoride from the ...

For Further Reading

First Name:
School Subject:
Answer: