# Posts by josh

Total # Posts: 1,933

algebra
solve x-5/x*x-54 -7x+8/x*x-3x-54 +x-2-x*x+12x+36

algebra 2
The volume ( v) of a gas in a container at a constant temperature varies inversely as the pressure (p). If the volume of a gas is 24 cubic centimeters when the pressure is 16 pounds, what is the volume under a pressure of 30 pounds?

geometry
A right cylinder has a radius of 3 and a height of 12. What is its surface area? If necessary, round your answer to two decimal places.

college physics
A typical wavelength of infrared radiation emitted by your body is 25 µm (2.5 multiplied by 10-5 m). What is the energy per photon of such radiation?

chemistry
use resonance theory to account for the fact that aniline(pKb 9.37) is a weaker base than cyclohexanamine(pKb 3.34)

Chemistry
1)Write the general equation used to determine the volume of stock required to make a given concentration of standard? Define any terms you used. ----use the 100ml flasks to create four serial dilutions of the stock 10,000uM nitrate solution that has been provided. Prepare ...

chemical oceanography
Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface...

chem 1p1
An automobile tire at 22oC with an internal volume of 20.0L is filled with air to a total pressure of 30. psi(pounds per square inch). [1 atm = 14.696 lb/in2]. What is the amount in moles of air in the tire? If the air is mostly nitrogen, how many grams of it would be in the ...

Chemical Oceanography
Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface...

Chemical Oceanography
Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface...

chemistry
write the two half-reactions for the reduction of nitrate to nitrite using Cd2+

home economics
okay so i have these 4 questions that i have no clue about...i asked my mom and aunts but they don't make clothes so im stuck on these 4 question i would appreciate if you could please help me 7. You're sewing a child's nylon jacket. You notice the fabric frays ...

college
The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

statistics
The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

college chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5 please write out the eq for me

physcis
THIS WEBSITE IS SO SLOW. NO ONE EVER ANSWERS.

English lit
Have writers block. Need help with Julia Alvarez poem!? I have to write a 1000 word analysis of the Julia Alvarez poem "Ironing Their Clothes". I need help with a thesis. I have no idea what to write about! 1 year ago Additional Details With a hot glide up, then down...

When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

chemistry
When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

analytical chemistry
When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

college chem
can you elaborate a little more on how to so it

college chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5? can someone please help me with steps to get the answer

college chem
what are the numbers for Conjugate acid and conjugate base

college chem
how did u get that can you please explain the steps

college chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5

math
Thank you the site was very helpful.

math
I really don't understand this question and I can't seem to be able to solve it. Can anyone help me? Write a composite number between 7 and 20.

chemistry
A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence of this same catalyst?

Chemistry
Could someone tell me how I would write out trimethylammonium butanoate's structure? I think the butanoate part is CH3CH2CH2-C=O but I don't know how to add the trimethylammonium part to it.

trig
how do i find the amplitude, period, phase shift of y=2 cos(-4t-(-4 pi/3))

chemistry
1.5 x 10(10) mL

windows XP
On a shared folder, Read permission allows a user to display folder names, filenames, file data, and attributes; run program files; and change folders within the shared folder. True or false?

computer science
a bank charges \$10 per month plus the following check fees for a commercial checking account: \$.10 each for fewer than 20 checks \$.08 each for 20-39 checks \$.06 each for 40-59 checks &.04 each for 60 or more checks write a program that asks for the number of checks written ...

computer science
write a program that asks for the starting time and minutes of the call, and displays the charges. the program should ask for the time to be entered as a floating-point number in the form HH.MM. for example, 07:00 hours will be entered as 07.00, and 16:28 hours will be entered...

college chem
. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS, based on the molality. ...

college chem
N2O4 --->2NO2 a 1 liter flask is charged with .4 mols of N2O4. at equilibrium at 373 k, .0055 mols of N2O4 remain. what is the Kc for this reaction? please explain to me how to get the rate law for this and solving

math
OH,,, well i found out what i needed.. THANKS FOR YOUR HELP SO FAR!!!! :)

math
ya but where did you get the 4x? SORRY!

math
how did you get that answer from the question renee posted

math
If the team wins, (A) Then the team remains in the playoffs. (B) If the team stays in the playoffs (B) then the championship is within reach. (c) Therefore, if the team wins, (A) the championship is within reach.(c) It is not logically correct because The A's, C's, and...

college chem
why is PCl5 .1 -.o5 that's what i don't understand i know its .1 bec of the molar but why minus .05 shouldnt it be something close to .1

college chem
how did u get that equation

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.

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

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

Math
y=3x+2

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

math
x+9y=18 find slope

english
u guys are horrible

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

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...

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

question
is kung fu a sport?

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

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

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

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

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 ...

college chem
do you have to use limiting reagent for this problem

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 ...

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.

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.

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.

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)

algebra
(8/125)^-(2/3)

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?

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

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

Chemistry
thats wrong. don't listen to him

2+7=9 7+2=9 1+8=9 8+1=9 3+5+1=9 5+1+3=9

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?

Environmental Science
I am guessing you have Lincoln Interactive?

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

chemistry
Is hexane and ethylene chloride miscible? Why?

math
how do I solve : -4/ x+4 = -3/x+6?

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 ...

Math
I'm so sorry it's suppose to be 1/8

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

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

Math
11/16-(-3/4)^2 divided by 2/5 ^3

math
how many philippine 5 cents are there in 10 peso bill?

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

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 ...

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 ...

Trig/Math
thank you!!

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.

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 ...

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

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

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?

Physics
isn't it 80 N?

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 ...

Physics
56 mph7 34mph

WAT DOES THE WORD DEVIOUS MEAN

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

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.

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...

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 ...

math
thanks again

math
thanks