Tuesday
July 29, 2014

Posts by KL


Total # Posts: 31

Solar Energy
1)4 2)4

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!

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.

Math
Pt. 1 1) 6(2+x) 2) 3x+6 --> 3(x+2) 3) x(x+3) 4) (x+3)(x+1) Pt. 2 1) 7x 2) 16+8x 3) 2x+7 4) -4x-8 5) x^2+6x+6 6) 3x^2+6x+3 Sorry.. I'm incapable of explaining it to you but here are the answers. You should really ask your teacher for that extra help as you will need to u...

Geometry
Whenever you see equilateral, just remember that it means all sides are equal. (tip: equil->equal, same pronounciation)

math
Jack's yard is a rectangle 105 feet by 212 feet. Using front-end estimation on the dimensions, what is an estimate of the area of this yard?

Chemistry
jnk

college economics
lkhgiuygkl

English
What does "leave his 'second best bed' to his wife" mean? I could not understand that phrase. May someone please help me? Thanks in advance.

physics
constant rotational acceleration

physics
There are two set pieces in a theater sitting on platforms with wheels. One is a tree with a mass of 50 kg. It is moving at 3 m/s. The other is a fence with a mass of 30 kg. If the two set pieces have equal momentum, how fast is the fence moving?

Pre-algebra
3{y-3} = 6-{y+2 +8

science
Why gram positive bacteria do not counter stain as with gram negative?

Biology
What is Uniformitarianism?How it relates to fossils?

Biology
What is Uniformitarianism?

french
But can it still be grammatically correct to say "je vais mettre les affiches?"

french
is it correct to say "je vais mettre les affiches" or should it be "je vais monter les affiches" (as in "I'm going to put the posters up")? Merci

French
1. Je FAIS, not "je fait"

Pre Calc
For what values of t will t-2, 2t-6, and 4t-8, in this order, form an arithmetic sequence? Could someone at least start me off?

8th grade math
Yes, this helped. It took me all the way back to high school. I can't believe they're doing the quadratic formula in the eighth grade. Thanks for your help.

8th grade math
Yes, I've had it already. I'm actually a 32 year old lawyer trying to help my teenaged sister. I forgot all of this after my sophomore year in college twelve years ago. Is this how you do it-- (A+3)A=3190 Then it becomes A(squared)+3A=3190 Then, 4A(cubed)=3190 divide b...

8th grade math
Your uncle is three years older than your aunt. The product of their ages is 3190. What are their ages? I know the answer is 55 and 58. But I can't come up with the correct formula or equation to get the answer. I've tried 3(A+3)=3190. It doesn't come up with the r...

math
If I remember correctly, a and b are variables. So you will substitute the value of a (which is 6) and the value for b (which is -4) into the problems. Before you do that, remeber that 4a is actually 4 x a or, once you change the variable a to 6, 4 x 6 or 24. The same with 4b....

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