Saturday
October 25, 2014

Posts by anon


Total # Posts: 1,387

chemisty
The density is the mass/volume. You will have to calculate the volume of the block. The volume of a block is the height x width x length. However, before multiplying, be sure to convert the dimensions so they are the same units. For example, convert them to cm.
February 20, 2013

CALCULUS
The derivative of e^x is e^x. To determine the derivative apply the constant multiple rule
February 20, 2013

Earth Science
Which geologic principle states that if rock strata are found folded or faulted, the folding or faulting occurred after they were deposited? faunal succession uniformitarianism original horizontality cross-cutting relationships Uniformitarianism does not sound right at all for...
February 20, 2013

Algebra
-2x-y=-1 how do you put this in slope-intercept form y=mx=b ?
February 19, 2013

Math
A bag contains 10 yellow, 15 blue and 5 red Marbles. Mark chooses a candy and doesn't replace it in the bag. Find P (neither blue)
February 14, 2013

Math
A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done?
February 12, 2013

Physics
A man carries a 10 kg sack of groceries in his arms with a force of 50 N as he walks forward a distance of 10 m. How much work has he done?
February 12, 2013

math
In the U.S., 4634 million pounds of apples were consumed in 2002. The population of the U.S. in that year was 290 million. 1. a medium apple weighs about 5 ounces. estimate how many apples a family of four would have consumed in one month.
February 9, 2013

Chemistry
Kc=0.0406
February 5, 2013

NEED HELP!
So part a would be at equilibrium and part b would be goes to the left?
February 5, 2013

Chemistry
In which direction will the net reaction proceed X(g)+Y(g)<---->Z(g) Kp=1.00 at 300k for each of these sets of initial conditions? a) [X]=[Y]=[Z]=1.0 m net reaction goes to the left net reaction goes to the right reaction is at equilibrium I chose 3 for a. b) Px=Pz=1.0 ...
February 5, 2013

Chemistry
Some people should not be allowed to help others with chemistry...solids do not have concentrations...therefore doubling the volume would have no effect
February 5, 2013

Chemistry
Kc = 1.2^2/3.8=0.379 The container volume is doubled A(s)<------>B(g)+C(g) (3.8/2)-----x----x--- 0.379 = (x^2)/(1.9 - x) x^2 + 0.379x - 0.7201 = 0 x=0.679 M A = 1.9 - 0.679 = 1.22 M But I got it wrong.
February 5, 2013

NEED HELP!
•NEED HELP ASAP - Anon, Tuesday, February 5, 2013 at 11:14pm How do I find x and the moles? •NEED HELP! - Anon, Tuesday, February 5, 2013 at 11:25pm Is x=0.189? I used the quadratic equation to solve for x from Kc = 0.514 = (0.6+x)(0.6+x)/(1.4-x). How do you find the...
February 5, 2013

Chemistry
4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it remained constant. A(s) <-------> B(g)+C(g) Then, the container volume was doubled and ...
February 5, 2013

Chemistry
2.422 mols is wrong.
February 5, 2013

NEED HELP ASAP!
Kc = 1.2^2/3.8=0.379 The container volume is doubled A(s)<------>B(g)+C(g) (3.8/2)-----x----x--- 0.379 = (x^2)/(1.9 - x) x^2 + 0.379x - 0.7201 = 0 x=0.679 M A = 1.9 - 0.679 = 1.22 M But I got it wrong.
February 5, 2013

NEED HELP
I got it wrong. X doesn't equal .189. I really need help on solving this problem.
February 5, 2013

NEED HELP!
Is x=0.189? I used the quadratic equation to solve for x from Kc = 0.514 = (0.6+x)(0.6+x)/(1.4-x). How do you find the moles of A?
February 5, 2013

NEED HELP ASAP
How do I find x and the moles?
February 5, 2013

Chemistry Help
For the first Kc I got .514 For the second Kc I got .129. How do I find the mols afterwards?
February 5, 2013

Chemistry
4.00 mol of solid A was placed in a sealed 1.00-L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.20 M, where it remained constant. A(s) <-------> B(g)+C(g) Then, the container volume was doubled and ...
February 5, 2013

Chemistry HELP
It is wrong. It said Incorrect. You need to compare Qc to Kc, not Kp.
February 5, 2013

Grammar (Last one :) )
Thank you :)
February 5, 2013

Grammar (Last one :) )
Except for Ronnie and _____, everyone was on time. him(my answer) he Between you and _____, I know the answer to the mystery. I me(my answer) Leave your message with Ms. Horioka and _____. me(my answer) I It was Geraldine Ferraro _______ ran for vice president in 1984. who(my ...
February 5, 2013

English-Grammar
Thanks :)
February 5, 2013

English-Grammar
So the third one is "predicate nominative"?
February 5, 2013

English-Grammar
Decide if the underlined (in parentheses) pronoun in the sentences below is used as a subject, a predicate nominative, or an appositive. Both Ben and (he) will graduate at the same time. (my answer)subject predicate nominative appositive The driver of that station was (she). ...
February 5, 2013

English-Grammar
Thank you :)
February 5, 2013

English-Grammar
Identify how the underlined pronoun in each sentence is being used. 18. Someone sent Ed and (me) a text from an unknown phone. direct object (my answer)indirect object 19. Mr. Simons saw Owen and (us) at the registry. (my answer)direct object indirect object 20. Show Edie and...
February 5, 2013

Geography
What is absolute location? A.a precise measure of where a location falls in terms of longitude and latitude using units such as minutes and seconds B.a precise measure of distance around the equator C.a more precise measure of where a location falls in terms of longitude and ...
February 4, 2013

physics
ive been sick so i missed a few classes and im not sure whats going on in my class these are my homework problems im trying to keep up
February 4, 2013

physics
In a water pistol, a piston drives water through a larger tube of radius 1.00 cm into a smaller tube of radius 1.00 mm. (a) If the pistol is fired horizontally at a height of 1.5m, use ballistics (2-D projectile motion) to determine the time it takes water to travel from the ...
February 4, 2013

physics
The British Sovereign coin is an alloy of gold and copper having a total mass of 7.988 g and is 22-karat gold. (a) Find the mass of gold in kg using that # of karats = 24 x (mass of gold)/(total mass). (b) Calculate the volumes of gold and copper used to manufacture the coin...
February 4, 2013

English
Thanks :)
February 1, 2013

English
Which word correctly completes the sentence? To (blank) did you write the card? A. Who B. Whom I thnk the answer is B. Whom. Which meaning of the vocabulary word steep is used in the sentence below? The steep rise in gas prices angered the population. A. Vertical B. Sudden C. ...
February 1, 2013

physics
A light bulb is placed 17.1 cm in front of a concave mirror. When the concave mirror is replaced by a plane mirror in the same location, the bulb's image moves 6.60 cm closer to the mirror. Calculate the focal length of the concave mirror.
January 31, 2013

Chemistry
At –11.0 °C (a common temperature for household freezers), what is the maximum mass of aspartame (C14H18N2O5) you can add to 1.50 kg of pure water and still have the solution freeze? Assume that aspartame is a molecular solid and does not ionize when it dissolves in ...
January 29, 2013

NEED HELP!
Can someone help me?
January 29, 2013

Chemistry
Classify these mixtures as colloids, suspensions, or true solutions. fog, milk of magnesia, mayonnaise, blood, table salt in water, dust-free air I got fog, milk of magnesia, mayonnaise for colloids. Blood for suspensions. Table salt in water and dust-free air for true ...
January 29, 2013

Chemistry
Is the freezing point 372 degree C? Kb = 0.512 Kf = 1.86
January 29, 2013

Chemistry
The boiling point of an aqueous solution is 102.48 °C. What is the freezing point? I know that formula for freezing point is delta Tf = Kf*m but what do I plug in for each?
January 29, 2013

Chemistry
If M = 0.498 do I times that by 475 mL converted to L to find out the mols and then times that answer by 4.65g to find the molar mass?
January 29, 2013

Chemistry
When 4.65 g of a nonelectrolyte solute is dissolved in 475 mL of water at 27 °C, the resulting solution exerts an osmotic pressure of 931 torr. What is the molar concentration of the solution? How many moles of solute are in the solution? What is the molar mass of the ...
January 29, 2013

Grammar
Which of the following words does NOT share the same etymology as the vocabulary word symmetry? A.synthesize B.symbol C.symphony D.sympathetic I think the answer is B. symbol. Thanks for the help :)
January 29, 2013

ACCOUNTING (Advance Sales)
Hi: I am unsure of how to adjust Advance Sales. For Year End, DEC 31, 2011. If my Unadjusted Balance for advance sales is $324,000 and I am told the following: 75% of the balance in Advance Sales is for garments to be made and delivered in 2012; the remaining 25% is from sales...
January 27, 2013

Geography
It was right :)
January 25, 2013

Geography
Thanks :)
January 25, 2013

Geography
So I should make "all of the above" the answer?
January 25, 2013

Geography
So, they are all the right answer? I know any of these maps could be used to describe a city, but I don't know if they are all the answer. Wish the question was regular multple choice...
January 25, 2013

Geography
What kind of map could you use to show information about a city? -a relief map -a population density map -a political boundary map -a vegitation map -All of the above You can pick as many as you want, but the question is only worth one point. I think the answers are political ...
January 25, 2013

English-Grammar
Thanks :)
January 24, 2013

English-Grammar
Decide if the underlined pronoun (I put what was underlined in parentheses) in the sentences below is being used as a subject, a predicate nominative, or an appositive. (He) and Bev are using the new computer. subject (my answer)predicate nominative appositive The dancers on ...
January 24, 2013

Chemistry
You need to dissolve CaCl2 in water to make a mixture that is 31.5% calcium chloride by mass. If the total mass of the mixture is 254.6 g, what masses of CaCl2 and water should be used?
January 23, 2013

Chemistry
Sort each of the following events based on whether the solubility of the indicated gas will increase, decrease, or stay the same. Each phrase specifies the gas involved and the change in its environment. 1. The temperature is increased 2.the partial pressure of an anesthetic ...
January 23, 2013

Physics
When a 1.53-kilogram mass is placed on a spring with a spring constant of 30.0 newtons per meter, the spring is compressed 0.500 meter. How much energy is stored in the spring?
January 15, 2013

PHYSICS
When a 1.53-kilogram mass is placed on a spring with a spring constant of 30.0 newtons per meter, the spring is compressed 0.500 meter. How much energy is stored in the spring?
January 15, 2013

Physics
When a 1.53-kilogram mass is placed on a spring with a spring constant of 30.0 newtons per meter, the spring is compressed 0.500 meter. How much energy is stored in the spring?
January 15, 2013

AP Calc
For the function find the derivative of its inverse given a point on the original function: y = 3x+1 point (0,11) What am i supposed to do with the point?
January 15, 2013

AP Chem
Be and B are the huge ones on breaking the octet rule. But, for that question they gave BeH2 so, I guess reasoning is that they are the exceptions? It's multiple choice. but I still want to understand it.
January 13, 2013

AP Chem
Is it because it only has four electrons to begin with with only two valence electrons? There's no way it can possible even make an octet?
January 13, 2013

AP Chem
A valid Lewis structure of __________ cannot be drawn without violating the octet rule. Answer: BeH2 Why would BeH2 break the octet?
January 13, 2013

AP Chemistry
Thank you sir.
January 13, 2013

AP Chemistry
The Lewis structure of PF3 shows that the central phosphorus atom has __________ nonbonding and __________ bonding electron pairs. Is the answer 1, 3 Is it 1 because it asked for PAIRS- so there are two electrons not bonded- so one pair?
January 13, 2013

chemistry
1.4169*10^16
January 13, 2013

chemistry
They are BOTH wrong.
January 12, 2013

Math
Kamman VanMarko Plumbing equipment sales Commission rate: 9 1/2% Annual base salary: $17,496 Month's sales: $2,460 What is the monthly pay?
January 11, 2013

Differential Equation
is it from 0 to 21? or 0 to 4.7??
January 5, 2013

Differential Equation
for 0<=t<=21 the rate of change of the number of black flies on a coastal island at time t days is modeled by R(t)=3sqrt(t)cos(t/3) flies per day. There are 500 flies on the island at the time t=0. To the nearest whole #, what is the max # of flies for 0<=t<=21? ...
January 5, 2013

calculus
wait...dont u have to integrate it from 0 to 21 or something?? n how would you integrate this equation?
January 5, 2013

calculus
for 0<=t<=21 the rate of change of the number of black flies on a coastal island at time t days is modeled by R(t)=3sqrt(t)cos(t/3) flies per day. There are 500 flies on the island at the time t=0. To the nearest whole #, what is the max # of flies for 0<=t<=21?
January 5, 2013

calculus
wait..so how would you integrate tht equation..im hving trouble with tht..
January 4, 2013

calculus
wait..dont u hve to integrate it?
January 4, 2013

calculus
for 0<=t<=21 the rate of change of the number of blakc flies on a coastal island at time t days is modeled by R(t)=3sqrt(t)cos(t/3) flies per day. There are 500 flies on the island at the time t=0. To the nearest whole #, what is the max # of flies for 0<=t<=21?
January 4, 2013

Forensics
A sample of light brown powder found in the kitchen of an alleged drug house gives a blue precipitate with cobalt thiocyanate. What is it? Is there enough evidence to prosecute?
January 3, 2013

Math-trig
The question in the textbook misses key information
December 19, 2012

Grammar
Thank you so much!! :D
December 19, 2012

Grammar
Am I using "into" properly in this sentence? Enrolling into college with an undecided major... I don't if I should use "to" or "into". Thanks :)
December 19, 2012

Grammar
Thanks :)
December 19, 2012

Grammar
Is this the right form of "to" in this sentence? I believe an education at XX College would give me the opportunity to hone my abilities and turn them into skills that can be translated to a successful career.
December 19, 2012

Chemistry
So it is a combination reaction, then?
December 18, 2012

Chemistry
What type of reaction occurs between zinc and Acetic acid? I think it is double replacement but I am not sure. Thank for the help :)
December 18, 2012

Grammar
Thank you :)
December 15, 2012

Grammar
I am writing an essay and for this sentence, I don't know if I have used the right tenses of "can" and "give". Please check to see if they are right :) "Using the insight gained from her road of life, she has given me the best life she can while ...
December 15, 2012

Chemistry
Go to back to H4P2
December 14, 2012

Chemistry
The data for everyone of us is different as you noticed formula is required
December 14, 2012

Chemistry
What is 4
December 14, 2012

Chemistry
He has got a point, though he did it a bit too aggressively. What he wants to know is, what are the formulas for working out these two questions? After all, a similar question could pop up in the final exam! To tell you the truth, i kinda miss how it was at the beginning of ...
December 13, 2012

math
9/20 7/10 4/5
December 12, 2012

Biology
bye boy. No one asked you to comment. I obviously could not find the answers to these question hence me posting them.
December 12, 2012

Biology
1. Two species live in the same area but breed in different parts of their habitat. These species are A) geographically isolated. B) ecologically isolated. C) artificially isolated. D) likely to produce hybrids. 2. A large population of animals is split in two by a physical ...
December 12, 2012

Grammar-clauses
I put the underlined parts of the sentences in parentheses. William Faulkner’s The Sound and the Fury is a novel (that uses the technique of stream of consciousness). independent clause adverbial clause adjectival clause (my answer) noun clause It takes effort to imagine...
December 11, 2012

English-Grammar
So the second one is a compound sentence?
December 11, 2012

English-Grammar
Although he was born in Scotland, he became a hero of the American Revolution. simple sentence compound sentence complex sentence (my answer) compound complex sentence His ship was badly managed, but Jones refused to give up. simple sentence (my answer) compound sentence ...
December 11, 2012

English-Grammar
thanks :)
December 11, 2012

English-Grammar
After the war, American shipping became vulnerable to attacks by pirates. simple sentence (my answer) compound sentence complex sentence compound complex sentence
December 11, 2012

English-Grammar
John Paul Jones moved to America to avoid a trial that involved his handling of a mutiny. simple sentence compound sentence complex sentence (my answer) compound complex sentence
December 11, 2012

Chemistry
No, the solubility of PbCl2 would remain roughly unchanged.
December 11, 2012

Chemistry
if you want that question answered, post it seperately.
December 11, 2012

physics
water is moving at a velocity of 2m/s through a hose with an internal diameter:1.60cm. What is the flow rate in liters per second?
December 11, 2012

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