Friday
November 28, 2014

Posts by ANON


Total # Posts: 1,437

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

math/algebra
A kicker punts a football from 3 feet above the ground with an initial velocity of 47 feet per second. Write an equation that gives the height (in feet) of the football as a function of the time (in seconds) since it was punted. Find the height (in feet) of the football 2 ...
December 9, 2012

Calculus
Let f be a continuous function on the interval [0,2] which satisfies integral of f(x)dx=5 when b is 2 and a is 0. Give this information compute the definite integral f(2y)dy when b is 1 and a is 0. Solve this
December 9, 2012

Calc-Derivative
Find the derivative of x^(1/x). Can someone show me steps for this problem...I go round in circles
December 9, 2012

Chemistry
The figure below is a heat curve for an unknown outerspace substance discovered by the Mars rover. By understanding the heat curve, scientists can make inferences about the composition of the planet. What is the temperature of fusion, Tfusion, and vaporization, Tvapor, for ...
December 9, 2012

Chemistry
What is true for water? A) In a phase diagram the solid-liquid coexistance line has a negative slope. B) In a phase diagram the solid-liquid coexistance line has a positive slope. C) The solid is more dense than the liquid. D) The solid is less dense than the liquid. E) The ...
December 9, 2012

English-Grammar
Thanks :)
December 9, 2012

English-Grammar
Which of the following is an example of an adverbial clause fragment? A.wherever there is a chance for a fabulous meal B.who described the book as a compelling masterpiece C.that the poet choose words carefully to convey a particular tone I think the answer is A, but I am not ...
December 9, 2012

Chemistry
Enthalpy of fusion 333.6 J/g 6010. J/mol Specific heat of solid H2O (ice) 2.087 J/(g·°C) 37.60 J/(mol·°C) Specific heat of liquid H2O (water) 4.184 J/(g·°C) 75.37 J/(mol·°C) Specific heat of gaseous H2O (steam) 2.000 J/(g·°...
December 8, 2012

Chemistry
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.0 g, and its initial temperature is -11.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.0 °C. How much heat is ...
December 8, 2012

Chemistry
On another planet, the isotopes of titanium have the following natural abundances. Isotope 46Ti Abundance 70.900% Mass(amu) 45.95263 Isotope 48Ti Abundance 10.000% Mass(amu) 47.94795 Isotope 50Ti Abundance 19.100% Mass(amu) 49.94479 What is the average atomic mass of titanium ...
December 8, 2012

Math
The Johnstown inclined plane in johnstown, pennsylvania, is a cable car that transports people up and down the side of a hill. during the cable car's climb, you move about 17 feet upward for every 25 feet you move forward. at the top of the incline, the horizontal distance...
December 7, 2012

Chemistry
For the energy is it around 3.647x10^-19J? And how did you know that c=3*10^8m/s?
December 6, 2012

Chemistry
Is F=5.55*10^14Hz?
December 6, 2012

Chemistry Someone Check for me
What did you use for the freq?
December 6, 2012

Chemistry
What is the freq? You got C=2x10^8m/s but you don't have the freq.
December 6, 2012

Chemistry
Suppose that absorbances of several solutions were measured at 545 nm. What is the frequency of this wavelength? What is the energy of this wavelength? (h=6.626 times 10^-34J*S)
December 6, 2012

Chemistry
Ok. I thought 100mL/25mL=4mL. Thanks
December 6, 2012

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.
December 6, 2012

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...
December 6, 2012

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?
December 5, 2012

Chemistry
Don't you have times 100/25 by 1000mL/1L to get it to mg/L?
December 5, 2012

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?
December 5, 2012

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 ...
December 3, 2012

Art Please check answers
^^ Your welcome's answers are 100% right, for anybody who is reading this.
December 3, 2012

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?
December 3, 2012

Calculus
Evaluate Integral of (lnx)^4/x dx when b is E and a is 1
December 3, 2012

Math
OMG, thank you!
December 3, 2012

Calculus
Evaluate integral of x times square root of (2x-1)dx
December 3, 2012

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?
December 3, 2012

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+
December 2, 2012

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 ...
December 2, 2012

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
December 2, 2012

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
December 2, 2012

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, ...
November 30, 2012

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, ...
November 30, 2012

Lang Arts
4 is c. You made me get it wrong... -_-
November 28, 2012

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.
November 28, 2012

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.
November 25, 2012

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 - ...
November 25, 2012

Chemistry HELP
Isn't the total mass of the Al(NO3)3*9H2O around 247.18 g/mol?
November 24, 2012

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
November 24, 2012

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.
November 23, 2012

Chemistry
For n I got 26.18 mols. For the mass I got 31 because it was CF.
November 23, 2012

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?
November 23, 2012

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.
November 19, 2012

Grammar
Thanks :)
November 16, 2012

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 ...
November 16, 2012

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...
November 14, 2012

Grammar
Thanks :)
November 14, 2012

Grammar
"that"?
November 14, 2012

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 ...
November 14, 2012

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 ...
November 14, 2012

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