Posts by kl

Total # Posts: 29

chemistry
Calculate the surface energy of the (100) plane of niobium. The heat of atomization is 745 kJ/mol. Express your answer in J/cm2

PHYSICIS ELENA PLEASE HELP
A beam resting on two pivots has a length of L = 9.00 m and mass M =89.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance 4.00 m from the left end exerts a normal force n2. A woman of mass m= 48.0 kg steps onto the l...

Chem help-please
I want your help providing you explan it nand show me hoe=w to gt the aswers so ai undrerahf i!

Chem help-please
At o degrees celcius, a 1.0-L flask contains 5.0 x 10^-2 mol N2, 1.5 x 10^2 mg O2 and 5.0 x 10^21 molecules of NH3. What is the p00artial pressure of each gasnand what is the total pressure in the flask? I need to understand how to calculate it, formula and how to get the prop...

Chemistry-Answer & Solution please!~
An AM radio statrion broadcasts atr 1060jGHZ Calculate tghe wavelength of the coressponding radio waves. Ned solution amdhow to get the answr! Thank you!

DEsperate to undertsand-Chemistry
The pressure of gas is measured at 550 mm Hg. Calculate the pressure in a. Torr b. lb/in2 c. atm d. in Hg How do I set up these conversions to get the [prper calcu;ations...step by step? This is the 3rd time zzzzzzzIve posted this question and I need to know how to get the ans...

Chemistry-Conversions
Can you please show me how to set up these conversions (how to do each of these conversions) Question- The pressure of gas is measured ay 550 mm Hg. Calculate the pressure in: a. Torr b. lb/in2 c. atm d. in Hg Can someone other than DrBOB answer this please!

physical sciences
If 57.9 grams of gold has a volume of 3 cubic centimeters what is the density of gold in g/ cm3,?

ALGEBRA
(0,-4) (1,1) (2,6) Simply plug in the x-coordinate into the equation and solve to get the y-coordinate.

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