Wednesday
September 17, 2014

Posts by josh


Total # Posts: 1,484

college chem
why is PCl5 .1 -.o5 thats what i dont understand i know its .1 bec of the molar but why minus .05 shouldnt it be something close to .1
March 7, 2010

college chem
how did u get that equation
March 7, 2010

college chem
In the reaction PCl5(g) ---> PCl3(g) + Cl2 (g) 0.200 mol of PCl5 is introduced into a 2.00 liter vessel. At equilibrium, the concentration of Cl2 is found to be 0.0500 molar. Find Kc for the reaction.
March 7, 2010

Math
Solve each formula for N r/n + 2 = p t=100 (n+3) pv/nr = T 8a + 2n + 6b
March 7, 2010

Math
t=100 (n +3) PV/NR= T 8a + 2n = 6b r/n + 2 = p
March 7, 2010

Math
y=3x+2
March 7, 2010

calculus
Give the volume of the solid generated by revolving the region bounded by the graph of y=ln(x), the x-axis, the lines x=1 and x=e, about the y-axis
March 4, 2010

math
x+9y=18 find slope
March 3, 2010

english
u guys are horrible
March 2, 2010

art
What is the main difference from da Vinci's Last Supper and Andrea del Castagno's Last Supper?
March 2, 2010

algerbra
you helped me with this chem ques and you got close to 1 how did u get it please help me?You end up with a cubic equation for x. You may have to solve it graphically. Take the root that is between 0 and 1. As x -> 1, the term on the left approaches 4/[(0.5)(2-2x)^2 ] = 2.27...
March 1, 2010

algerbra
4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x
March 1, 2010

question
is kung fu a sport?
March 1, 2010

algerbra
4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x
February 28, 2010

maths PLEASE HELP
write x^2-11/5 log(2 x-1)+11/5 log(x-2)+ c as a single log im not sure how to change the brackets
February 28, 2010

math
4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x
February 28, 2010

art
can you change the relationship between object and background by changing their colors? what happens
February 27, 2010

college chem
At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the ...
February 27, 2010

college chem
do you have to use limiting reagent for this problem
February 26, 2010

college chem
At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the ...
February 26, 2010

Chemistry
Gold crystallizes in a face centered cubic structure. Using only a periodic table for refrence, determine the edge length of a gold unit cell. Show all Work.
February 21, 2010

Chemistry
Order the following solids according to increasing lattice energy. HgI2, CdCl2, ZnCl2 Now I get how to sort of do it, but I do not get how to do it if I'm looking at its radius if they do not provide it in the question.
February 21, 2010

Chem
Carbonic acid is a diprotic acid that ionizes in two stages. Write the two equations for the successive ionizations of carbonic acid in water.
February 21, 2010

Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if ZnCl2(aq) reactant is present in stoichiometric excess. Separate your answers by comma. ZnCl2(aq) + K2CO3(aq) → ZnCO3(s) + 2KCl(aq)
February 18, 2010

algebra
(8/125)^-(2/3)
February 16, 2010

Chemistry
Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of NaBr formula units formed when 126 NBr3 molecules and 192 NaOH formula units react?
February 15, 2010

math
simplify 8{[4(q-4)+16]-[2(5q-3)+3]}
February 11, 2010

math
simplify 8{[4(q-4)+16]-[2(5q-3)+3]}
February 11, 2010

Chemistry
thats wrong. dont listen to him
February 8, 2010

math 4th grade
2+7=9 7+2=9 1+8=9 8+1=9 3+5+1=9 5+1+3=9
February 7, 2010

statistics
What is the value of the z-scores if the area of the curve to this point is 0.887? How much of this are is between the peak of the curve and this point?
February 1, 2010

Environmental Science
I am guessing you have Lincoln Interactive?
February 1, 2010

Math
Simplify 2/7(-7x^2) what are the steps involved? thanks alot!
January 27, 2010

chemistry
Is hexane and ethylene chloride miscible? Why?
January 27, 2010

math
how do I solve : -4/ x+4 = -3/x+6?
January 26, 2010

Math
I posted this problem the other day and someone answered it but when I checked my book I realized that I wrote the problem wrong. This morning when I posted I had put the wrong answer. The answer is suppose to be 1/8 but I don't understand how to solve the problem. Help ...
January 23, 2010

Math
I'm so sorry it's suppose to be 1/8
January 23, 2010

Math
I posted this problem the other day and someone answered it but when I checked my book I realized that I wrote the problem wrong. The answer is suppose to be 43/128 and I can't get it. Thanks (1/4)^2/(1/2-3/4)+ 3/2^3
January 23, 2010

social studies
why do you think much of the land settled between 1700 and 1760 was farther inland rather than on the coast
January 22, 2010

Math
11/16-(-3/4)^2 divided by 2/5 ^3
January 22, 2010

math
how many philippine 5 cents are there in 10 peso bill?
January 21, 2010

Alg II
*in the original equation it was supposed to be +6x-13 not =6x-13
January 20, 2010

Alg II
I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation x^3-6x^2+2x-13 How ...
January 20, 2010

Alg II
I'm working with finding roots of polynomial equations with degrees of 3 or higher. I have the equation r(x)=x^4-6x^3+12x^2=6x-13 I used a graphing calculator to find the real roots of 1,-1 Then I did synthetic using -1, and I ended up with the equation x^3-6x^2+2x-13 How ...
January 20, 2010

Trig/Math
thank you!!
January 20, 2010

Trig/Math
Find all the points having an x coordinate of 2 whose distance from the point (-1,-5) is 5. so far i have 5=sqrt((-1-2)^2+(-2-y)^2) 5=(-3)^2 how do i simplify the rest of the equation so i can find x. do i foil it out? thanks.
January 20, 2010

english
Think about each character's perspective and how they relate to the other characters in the book. It's been awhile since i read things fall apart, but think about how Janie's journey relates to Okonkwo's. How are their families alike? How are their hardships ...
January 20, 2010

english
i mean like info about bugsy malone and how he stared his life to become a film movie star etc
January 19, 2010

english
my teacher told me to find a bio of bugsy malone ganster i look all over and nothing can u help me please
January 19, 2010

OCHEM
When 2-methyl-2-butene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed?
January 7, 2010

math
1000 lockers 1000 students, the first student goes along and opens every other locker. The second student goes along and shuts every other locker beginning with the number 2. The third student changes the state of every 3rd locker begining with the number 3 (if the locker is ...
January 2, 2010

Physics
56 mph7 34mph
December 27, 2009

READING
WAT DOES THE WORD DEVIOUS MEAN
December 23, 2009

mechanics
A 150kg safe on a frictionless casters is to be raised 1.20 m off the ground to the bed of a truck. Planks 3.0 m long are available for the safe to be rolled along. How much force is needed to push the safe up to the truck
December 16, 2009

mechanics
A hollow steel tube of square cross section, whose outside dimension is 10cm on side and 5 mm thick, is loaded with compressive forces of 120 KN. What is the stress produced in the members.
December 16, 2009

geometry
I have triangle XYZ with BX as the bisector sides XY and XZ are congruent. I have to write a proof for angle Y being congruent to angle Z. This is what I have, but it doesn't seem correct - can anyone help? XY is congruent to XZ - Given XB bisects angle XYZ - Perpendicular...
December 13, 2009

geometry
I am working on a geometry problem where I have to build a mobile of the quad. family. I have to state the properties of each figure. For a parallelogram I have 1. opp. sides are congruent 2. opp. angles are congruent 3. diagonals bisect each other and are congruent. For a ...
December 12, 2009

math
thanks again
December 10, 2009

math
thanks
December 10, 2009

math
sin(2arccos(1/4) - arcsin (-1/2))
December 10, 2009

physics
A farsighted man has a near point of 50 cm. What power lens should he use as a magnifier to see clearly at a distance of 15cm without wearing his glasses?
December 9, 2009

physics
if im standing 28 meters from a tree....the tree is leaning 7 degrees vertically away from u...the degree of elevation is 26 degrees from feet to tree...whats the height of the tree?
December 6, 2009

English/Writing
The purpose of a persuasive essay is not to prove anything. That might be where you're going wrong. Very few qualitative topics can be proven. The objective of your essay is to "persuade" readers towards your line of thinking. You provide a persuasive argument ...
December 6, 2009

Math Word Problem
720
December 5, 2009

physics
A car traveling at +7.8 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 1.6 s. Find vf . Answer in units of m/s
December 2, 2009

algebra
-22.45
November 29, 2009

philosophy
One of my friend Josh whose dad owns 20 or more gas station invited me to his party. When I went to the party most of them were wearing their suit. I was wearing casual clothing that I usually wear at school. I was pretty embarrassed surrounded by their style. I really looked ...
November 29, 2009

philosophy
I don't like to fight but to impress others I pose as I can fight and hence I am lost in that false posing of me. I should not do this, because this way I am ditching myself and this then can hurt later when we face the repercussion of those acts. I am not rich and looking...
November 29, 2009

philosophy
so i just have to list some examples. right?
November 29, 2009

philosophy
Examples of ways Thanatos has affected your behavior. --- Thanatos: Freud uses this term to explain our inner self. He says that inside each of us there is a force, Thanatos, that causes us to do the exact opposite of what we really want to do, it causes us to sabotage our ...
November 29, 2009

Geo
Which statement about African music is not true? a. It has been strongly influenced by American jazz. b. It is popular around the world today. c. The blues tradition came from Africa. d. Contemporary music borrows from its traditions and styles.
November 24, 2009

criminal justice
while the us constitution specifically the bill of rights, was a comparatively short document, it has stood the test of time, but has been the focus of how much controversy throughout the years. does this living document provide u.s citizens w/ample protection? if not what was...
November 24, 2009

college
What is another name for a playwright?
November 23, 2009

physics
How can I calculate the tension in the two cords that are labeled A and B in a two mass system? Cord A is on top with a 1 kg mass attached and Cord B connects this mass to a 2 kg mass. The two mass system accelerates directly upward at 2m/s^2.
November 21, 2009

physics
If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and directly straight out...
November 21, 2009

physics
Is it true or false that when a baseball player hits a home room, the baseball received a greater impulse from the bat than the bat did from the ball?
November 21, 2009

physics
Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?
November 21, 2009

2rd grade
how to use a hundred chart to subtract
November 19, 2009

History Quick?
Thank you. I get it now.
November 19, 2009

History Quick?
I really don't understand what you mean. I thought that one of Jackson's principles was expanded suffrage which allowed all white men to vote. I honestly dont get what you mean please help.
November 19, 2009

History Quick?
I'm confused.... so in simplier terms what should I be saying? I don't get it?
November 19, 2009

History Quick?
Should I take out the first part Jacksonian era was known for the success of expanded suffrage.
November 19, 2009

History Quick?
Can you please tell me what is wrong with this sentence. My teacher underlined it on my paper. What should it say. Thank You Jacksonian era was known for the success of expanded suffrage. Jackson's supporters felt like white men should be allowed to vote.
November 19, 2009

English
Can you please tell me what is wrong with this sentence. My teacher underlined it and I can't figure out what is wrong with it. Thank you. With the results of the election in, Andrew Jackson led in the popular and electoral votes, yet did have the majority of the electoral...
November 19, 2009

math
3x-9+15x
November 16, 2009

History
We don't have a textbook. We never got one when we started school. Can you please tell me Who owned Texas before it became an independent nation? I tryed searching for an answer but did not come up with anything. I appreciate your help and will continue knit picking this ...
November 14, 2009

History
The southeastern Indians went to the west Texas is a western state now. Was it Mexico that owned texas before. Are my examples correct for me to use that I had listed before. I'm still loss. Sorry It takes me a while to catch on to history
November 14, 2009

History
For the removal of indians could I talk about the Trail of Tears and Blackhawk? Anything else? Slaves: Gradual emancipation, abolition, Louisiana Purchase Anything else? Any ideas for the Texans and Mexicans?
November 14, 2009

History
I need some help on this essay question for my history class. I'm confused. There are three instances of the theory of the Manifest Destiny in the US as we approach 1845. Name the three examples, discuss each of one and it's relationship to the growth of the United ...
November 14, 2009

Algebra1
is this what you are saying......... (t-5)/(3-t)..i need to list the numbers for which the rational expression is undefined.
November 10, 2009

Algebra1
don't have a good teacher. need to understand how if can solve to figure out if this is undefined t-3/3-5
November 10, 2009

biology
skin cells seem to fit together like pieces of a jigsaw puzzle how is this arrangement of cells helpful to an organism?
November 8, 2009

physics
A 44.3-cm diameter disk rotates with a constant angular acceleration of 2.3 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (a) Find the ...
November 5, 2009

math
solve the quadratic equation xsquared - 2x - 3 = 0
November 4, 2009

Calc
Newton's Law of Gravitation says that the magnitude F of the force exerted by a body of mass m on a body of mass M is the following. F=(GmM)/r^2 Here G is the gravitational constant and r is the distance between the bodies. (a) Find dF/dr (b) Suppose it is known that Earth...
November 3, 2009

Calc
nevermind i got it
November 3, 2009

Calc
it got cut off...here's the rest: (i) 2 to 5 µm ? µm2 (ii) 2 to 3 µm ? µm2 (iii) 2 to 2.1 µm ? µm2 Thank you
November 3, 2009

Calc
The volume of a growing spherical cell is given below, where the radius is measured in micrometers (1 µm = 10^-6m). V = 4/3pi r^3 (a) Find the average rate of change of V with respect to r when r changes from 2. Evaluate your answers numerically. (i) 2 to 5 µm ? &...
November 3, 2009

Calc
The volume of a growing spherical cell is given below, where the radius is measured in micrometers (1 µm = 10-6m). V = 4/3pi r^3 (a) Find the average rate of change of V with respect to r when r changes from 2. Evaluate your answers numerically. (i) 2 to 5 µm ? &...
November 3, 2009

physics
how are the colors in a spectrum from an atom different from those in a rainbow? I think it is that the spectrum colors are more distinct and not "fuzzy" like a rainbow but I'm not sure
November 2, 2009

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