# Posts by ANON

Total # Posts: 2,820

Chemistry
Ok. I thought 100mL/25mL=4mL. Thanks

Chemistry Need Some to Check
But when you times (100mL/25mL) you get 4mL. Then you times 4mL times 15.8 mg/L and it doesn't cancel out the mL.

Chemistry
Concentration 15.8 mg/L Final Volume 100.0 mL What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option has been diluted by taking 25.0 mL of lake water and diluting it to the indicated final volume? •Chemistry...

Chemistry
Water treatment plans must reduce phosphate levels to 3.2 micromoles PO4^3-/L before the water is considered drinkable. If water from Lake A is determined to have a phosphate concentration of 0.419 mg PO4^3-/L, does it meet this allowable standard for drinking water?

Chemistry
Don't you have times 100/25 by 1000mL/1L to get it to mg/L?

Chemistry
Concentration 15.8 mg/L Final Volume 100.0 mL What is the concentration of phosphate in the original lake water sample if the unknown lake water sample in the option has been diluted by taking 25.0 mL of lake water and diluting it to the indicated final volume?

Chemistry
The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely ...

Math
The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?

Calculus
Evaluate Integral of (lnx)^4/x dx when b is E and a is 1

Math
OMG, thank you!

Calculus
Evaluate integral of x times square root of (2x-1)dx

Calculus
Evaluate integral of x times the square root of (x-4) dx I got u-(8u^(3/2) over 3) Can anyone check this for me?

Chemistry
Balance the following equation for a half reaction that occurs in acidic solution. Use e– as the symbol for an electron. Mo^3+ -> MoO2^2+

Chemistry
The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely ...

Chemistry
Classify each of the following as a redox reaction or a non-redox reaction. Zn+CuCl2 -> ZnCl2+Cu HCl+NaOH -> H2O+NaCl 2CO+O2 -> 2CO2 SO3+H2O -> H2SO4

Chemistry
Can someone check my answers? What is the oxidation state of each element in K2Cr2O7? K +1 Cr +6 O -2 What is the oxidation state of each element in SO32–? S +4 O -6

sat essay
Assignment: Should heroes be defined as people who say what they think when we ourselves lack the courage to say it? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, ...

SAT Essay
Assignment: Should heroes be defined as people who say what they think when we ourselves lack the courage to say it? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, ...

Lang Arts
4 is c. You made me get it wrong... -_-

Physics
Which requires more energy: to raise 1 kg of liquid water from 0 to 100 degrees (Celsius) or to turn that water to steam after it hits 100 degrees? Assume the specific heat capacity of water is approximately independent of temperature.

math
44% of adults say cashews are their favorite kind of nut. You randomly select 12 people and ask each to name their favorite nut. Find the probability that the number who say cashews are their favorite nut (a) exactly three, (b) at least four, and (c) at most two.

Chemistry
How do you prepare 600.0mL of 0.48M Al(NO3)3*9H2O? Is this correct? 1. Measure out 71g of solution 2. Put approx. 300.0mL of water into container 3. Add the 71g of solution to the water and mix 4. Add more water until 600.0mL of solution is obtained 5. Mix •Chemistry - ...

Chemistry HELP
Isn't the total mass of the Al(NO3)3*9H2O around 247.18 g/mol?

Chemistry
How do you prepare 600.0mL of 0.48M Al(NO3)3*9H2O? Is this correct? 1. Measure out 71g of solution 2. Put approx. 300.0mL of water into container 3. Add the 71g of solution to the water and mix 4. Add more water until 600.0mL of solution is obtained 5. Mix

Chemistry
The moles of C is 3.227. The moles of F is 3.224. Therefore the empirical formula is CF. How would I find the empirical mass? Your explanation is confusing.

Chemistry
For n I got 26.18 mols. For the mass I got 31 because it was CF.

Chemistry
A 0.02882 g sample of gas occupies 10.0-mL at 288.5 K and 1.10 atm. Upon further analysis, the compound is found to be 38.734% C and 61.266% F. What is the molecular formula of the compound? What is the geometry shape around each carbon atom? Polar or Nonpolar?

English-Grammar
The underlined words (I put them in parantheses) are an example of a(n) ___________. (When the earth, moon, and sun are in line), an eclipse occurs. A. adverbial clause B. adjectival clause C. noun clause My answer is C.

Grammar
In case anyone was wondering, the other answers are 1. A 2. B 3. B and then yes 4. Is A

Grammar
Thanks :)

Grammar
Which of the sentences below displays the correct punctuation? A.The patient looked at the doctor as though he had never seen her before. B.Even though Laura is very young she is already a skilled chess player. C.Carlos asked me to buy the gift, since I am more aware of our ...

physics HELPP!!!!!!!
Two astronaut, as shown in the figure, each having a mass of 88.0 kg, are connected by a 10.00 m rope of negligible mass. They are isolated in space, moving in circles around the point halfway between them at a speed of 6.00 m/s. By pulling on the rope, the astronauts shorten...

Grammar
Thanks :)

Grammar
"that"?

Grammar
Which of the following is a complex sentence? A.After the class, we all went to Alec's house. B.Alec's brother John was home, but his sister Cynthia wasn't. C. Alec suggested we all go to the neighborhood pool. I'm thinking the answer is A, but I'm not too ...

physics HELPP!!!!!!!
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 ...

physics HELPP!!!!!!!
A 6.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.400 k∙m2 and a radius of 0.700 m. Assuming that the cord does not slip on the pulley, ...

Math
Please help! Economy drapes for a certain size window cost \$90. They have shallow pleats, and the width of the fabric is 2 times the window width. Luxury drapes of the same fabric for the same size window have deeper pleats. The width of the fabric is 3 times the window width...

Math
Letter 'C' on this question confuses me, please help! Holly has joined a video rental club. After paying \$6 a year to join, she then has to pay only \$1.25 for each new release she rents. a. Write an equation in intercept form to represent Holly’s cost for movie ...

statistics
fck u boi

Math
Freshman math question, super confused! Today while Don was swimming, he started wondering how many lengths he would have to swim in order to swim different distances. At one end of the pool, he stopped, gasping for breath, and asked the lifeguard. She told him that 1 length ...

math
Yes it is 88.9%!

Math for Steve or someone good at math
The answers in order are: B D A D D

physics
A 1,660 kg car is parked on a hill with a slope of 8.0°. Its brakes and transmission are locked in position to keep the car from rolling. The coefficient of static friction of the rubber tires on the asphalt road is 0.14. What is the force of static friction between the ...

physics
A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20, and the coefficient of kinetic friction is 0.15. The sled is attached to a rope, horizontally, in which the tension force is slowly increased. How much tension force applied...

calculus
Just take tbe derivative of the functions, set that to zero and solve for x. Take those values you got and the interval values and test them in the ORIGINAL function ( f(x) not the derivative! )and see which is the biggest value (absolute max) and the smallest value (absolute ...

Physics
she could have meant 14.1... just saying

Math
Thanks alot to "Miss Sue". I like how you show us how to do it, not just give the answers. Very helpful.

elementary
Why would you ask me this simple question?

Physics
the last one

physics
If you walk 3.0 km on a straight road and then find that you are 1.5 km east of your starting point and some unknown distance north of your starting point, in which of these directions did you walk?

physics
A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag force from the air upward on it increases. When the upward force is 0.7 N, what is the direction and magnitude of the net force on the apple?

math

math
determine between which consecutive integers the real zeros of each function are located. f(x)=3x^3 – 10x^2 + 22x – 4 (I got 0,1) f(x) = x^3 – 12x^2 + 17x – 9 (NO idea) f(x) = x^3 – 9 (I got 8,9) Thanks for the help, I really appreciate it. I need the ...

English
Ooops, it actually was c. I thought that A and B were too direct, but I also didn't think that C really characterized the person, maybe that's why it was the right answer. I should just stick to my original answers, hehe :) Thanks for the help.

English
B may be someone refering to another person, but I find it hard to tell. I know it isn't A because it is saying directly that Macbeth is brave, I'm not sure about b because it is kinda like sentence a, and c doesn't refer to much of anything so i'm confused. So...

English
Which of the following is an example of indirect characterization? A.“brave Macbeth” B.“worthy gentleman” C.“Bellona’s bridegroom” I'm guessing C, but i'm really not sure. The help is so appreciated.

maths
You have to distribute the "x" on the outside to (x-5) to get (x^2-5x) then FOIL. FOIL stands for first, outside, inside, last. This is the pattern of multiplication you have to use to solve this type of problem. It hard to show how to foil online, just look it up, ...

English
from Sir Gawain and the Green Knight Why didn’t the Green Knight want to duel? A.He was a peaceful knight. B.He would easily win. C.He did not bring a weapon. D.He never fought at Christmas. I think the answer is either A or B. Thanks for the help.

Physics
A car with its brakes locked will remain stationary on an inclined plane of dry concrete when the plane is at an angle of less than 45 degrees with the horizontal. What is the coefficients of static friction of rubber tires on dry concrete

English
Oh, I meant C for ambitious. Thanks!

English
So which answer should I chose? I think I might go with B because she is a nun trying act as refined as those of the Court, I guess that makes her ambitious

English
Based on the following description of the Nun, which word BEST describes her? At meat her manners were well taught withal; / No morsel from her lips did she let fall, / Nor dipped her fingers in the sauce too deep; / But she could carry a morsel up and keep / The smallest drop...

physical science
how much heat is absorbed by contacting 10 grams of 100 degree C steam by a students hand.

physical science
how much heat is absorbed by pouring 10 grams of 100 degree C liquid water on a students hand. The water is cooled to body temperature 37 degree C

Physics
How much heat must be removed from 500 grams of water at 0 degrees C to form ice at 0 degrees c?

Ratios of Similar Figures
macy is correct for all if you are from connections academy colorado

Ratios of Similar Figures
5d 6b 7d All of yummies ansewers were right except these

Ratios of Similar Figures
I don't know who to trust

math/calc
gotta find the first and second derivative of f(x)=x^2/(x-1) thanks for help!

Grammar
Thank you so much

Grammar
Which of the following combines the sentences below by coordinating? Senate pages may be between fourteen and seventeen years old. Pages in the House must be high school juniors or seniors. A.Senate pages may be between fourteen and seventeen years old, while pages in the ...

English-Grammar
Thanks :)

English-Grammar
That makes the answer B, then?

English-Grammar
Identify the word or words the best describes the underlined(in parentheses) word for the question (Comparing the two essays), it is obvious that one relied on more thorough research. A.prepositional phrase B.participial phrase C.gerund phrase D.infinitive phrase I think the ...

Math
A town has population 225 people at year t=0. Write a formula for the population, P, in year t. a) grows by 10% per year I don't understand how to do this, and keep getting the wrong answer. Also, Find a formula for the linear function q(x) whose graph intersects the graph...

CIS 210
AAAAhhhh...this is due today!!!

Psychology
The answer was A, oh, well....

Psychology
The impact of drug x on fertility rates in young women A.Potentially rendering young women unable to have children B.Potential birth defects if the women should become pregnant during the study C.Exposing young women to an untested drug D.There is no ethical dilemma I'm ...

English-Grammar
Thanks :)

English-Grammar
Yeah, it doesn't make sense for people to be imported. So the answer is C, then?

English-Grammar

English-Grammar
Which of the following sentences does NOT contain a dangling modifier? A.Torn from its moorings, the high wind drove the boat onto the rocks. B.Imported in the last century, the people on Easter Island outnumber the horses. C.The Stanleys moved into the house, although it was...

Chemistry
3.68kj of energy are released per ml so it is actually 3.68kj/ml you need to cancel out the ml by multiplying to get the heat lost by ice water for this specific amount of ice water

English Literature
What is ironic about the rioters' wish to kill Death? A.Death is the one who seeks people to kill. B.The rioters should be concerned about each other's greed. C.The rioters believe they can be successful. D. Death and the rioters are thieves. I think the answer is ...

you will get banned from your school if they know this is you but thanks for the answersssssss

Math (kindergarten)
start on the right. 8+1=9 move to the left side. 1+2= 3. the solution to this problem is 39

Physics
K = 1/2 * m * v^2 Convert km/h to m/s, and solve for K

math
was ms.sue right?

precalc
I am stuck on this one problem and think it might be the teachers typo but don't want to point it out without being sure. You have to find the zeros (we use long division) of x^5+8x^3+16x but because these are all raised to odd powers they either give me negative or ...

math
Well if I'm looking up the answers on my phone and not my school computer how will they track me?

Physics
where did you get the numbers .23 and -1.167 from?

precalc
f(x)=2+4x-x^2 when x is less than 2 thus f-1(x)=2-sqrt(-x+6) i need to show that f(f-1(x))=x, but i keep getting negative x...any help

anatomy
do you think there is a difference in the absolute force generated by males and females? I think the answer is yes just by the common knowledge that males are typically stronger than women. But, I'm not sure how to scientifically explain why a man's muscles are able to...

physics
t = 1.8 x = 36 meters y = -3.75 meters Vox = x/t = 36/1.8 Vox = 20 m/s Vox = VocosƟ 20 = VocosƟ Vo = 20/cosƟ Voy = Vo + at y = Voyt + 0.5at2 = -VosinƟ -4.9t2 -3.75 = (20/cosƟ)sinƟt -4.9t2 <----plug in t = 1.8 -3.75 = (20)(2)tanƟ - (4.9)(3....

social study
It should be : warmer than at either Z or U (if X is located on the center of the globe {equator} then it should be warmer than Z and U)

chem
have 0.0114 mole of Cu(OH)2 (s) a gelatinous precipitate. After heating, and converting all of it to CuO(s) wash the solid as a means of purifying it. How much (in g) should you have of CuO at this point? do you just convert 0.0114 moles cu(OH)2 to grams and then that's ...

ENGLISH
6d 7d 8d 9a 10a 11 is by Olaudah Equiano btu you have to give some about how you found out

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