Monday
April 21, 2014

Posts by Kat


Total # Posts: 363

Biology
Hydrolysis uses a catabolic reaction. Explain what a catabolic reaction is and how it is useful in creating monomers from polymers.

math
Wilson buys pizza every month to serve to his employees at their meeting. In February, he bought three more than twice the number of pizzas he bought in January. If Wilson bought 15 pizzas in February, how many did he buy in January?

Chemistry
The activation energy of a certain reaction is 34.9kJ/mol . At 23 ∘C , the rate constant is 0.0190s−1. At what temperature in degrees Celsius would this reaction go twice as fast?

college chemistry
After 94.995 seconds the concentration of A was reduced from 0.3688 M to 0.1464 M. What is the first order rate constant?

chemistry
By how much will the vapor pressure of water decrease if a solution at 40.0°C is produced by dissolving 16.0212 g of K3PO4 (formula mass = 212.30 g/mol) with 40.8480 g of water. The vapor pressure of pure water at this temperature is 55.30 mmHg. If the solute is ionic, ass...

College algebra
Things did not go quite as planned. you invested $8,000, part of it in a stock that payed 12% annual interest. However the rest of the money suffered a 5% loss. If the total annual income for both investments was $620.

science
is this for your home work or something? cause it is really hard!!!!!!!

Computer hardware
What circumstance would be the only reason for one to toil with processor and system bus frequencies? A. Purchasing a multi core processor B. Purchasing a chip with static ram C. Overclocking a processor D. Purchasing an AMD chipset I think it's c, but I am not sure

math
-[2x-(5x+2)]=2+(2x+7) help me please, i need step by step so that I won't get lost

Principles of Democracy
Thank you.

Principles of Democracy
There are none. :(

Principles of Democracy
1) The process of amending the constitution involves both____ and ____. 2) In general, liberal ideology supports...?

math
4/7*7/8?

chemistry
an aspirin contains .324 g of aspirin. how many pounds of aspirin are in a 500 aspirin of bottle

Driver's Ed
The lower the speed, the less time the driver has to spot dangerous situations and take action. A) True. B) False.

Driver's Ed
Driver's licenses can not be suspended for more than 365 days. A) True. B) False. In 2002, two out of every three drivers under the age of 21, involved in a single vehicle crash, were killed at night. A) True. B) False.

physics
an object weighs 10N on earth .what is the objects weight on a planet one tenth the earths mass and one half its radius?

Health Ethics
sure

Health Ethics
are laws and regulations the problem or the solution in addressing ethical problems? what is the alternative? explain your answer in 200 words or more

algebra
How many jelly beans are there in a candy dish whose measurements are 3 in high, and has a radius of 2?

Math simplify
there was no parentheses

Math simplify
How Do I simplify this? a) 4√-27a^3b

math
2/3 * 1 1/2

chemistry
The temperature of an ideal gas in a 5.00 L container originally at 1.01 bar pressure and 25 °C is lowered to 220 K. Calculate the new pressure of the gas.

physics
A 85 kg pole-vaulter falls from rest from a height of 6.4 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.48 s after landing on the pad. (a) Calculate the athlete's velocity just before reaching the pad. m/s downward (b) Calculate the constant force exerted on t...

US HISTORY
The NSC-68 documentreflected the American Belief A.)that military spending would help the ecomony B.)that huge sacrifices would be needed by Americans to fight the cold war C.)in our limitless capabilities D.)that we needed help to fight the spread of communism E.)in the futil...

US HISTORY
During the 1950s, the Central Intelligence Agency engineered pro-American political coups in both A.)Iraq and Nicaragua B.)Libia and Costa Rica C.)Lebanon and El Salvador D.)Iran and Guatemala E.)Eqypt and Cuba

US HISTORY
In return for the old American destroyers, the British gave the USA A.) six air bases in Scotland and Iceland. B.) a role in developing the atomic bomb. C.)"most favored nation" status. D.)access to German military codes. E.)eight valuable naval bases.

math
you are looking for a safe place to put 30,000.00 for one yr. Bank A offers 2.46% interest rate continuously. Bank B offers 2.48% quarterly and Bank C offers 2.47% monthly. Find the most effective rate of each to determine which would earn you the most interest at the end of o...

chemistry
A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing-point depression of the solvent if the freezing point constant is -1.86 °C/m? Show all of the work needed to solve this problem.

statistics
Using the average and standard devation for length variable from problem 3,find the probability that the length of 35 movies is less than 120 minutes. Assume the distribution is normally distributed. interpret your result.

Chemistry
A very old and tired , grey haired AP Chem instructor wanted to determine the Ka of an unlabelled monoprotic acid in his stockroom. He dissolved an unknown amount of acid in an unknown amount of water and proceeded to titrate the sample with a solution of NaOH of unknown molar...

college chemistry
Assuming that 9.0\% of the energy output of a 65W lightbulb is visible light and that the average wavelength of the light is 550 {\rm nm}, how many photons are emitted by the lightbulb each second?

Math 11
Is it possible to construct a rectangle whose length is 1cm less than twice its width, and whose area is 40cm^2? If your answer is yes, determine the dimensions of the rectangle to the nearest tenth of a centimetre. If your answer is no, explain why it is not possible. I know ...

chemistry
The gaseous product of a reaction is collected in a 30.0 L container at 37 degrees C. The pressure in the container is 2.5 atm and the gas has a mass of 85.0 grams. What is the molar mass of this gas? I know the correct answer is 28.8 g/mol but I need to know how to get the an...

Math Algebra
Here the missing Infos ;-)). The Physics of Baseball by Robert Adair - after t seconds, starting 1 sec after 35 angle, rotating with an initial backspin of 2000 revolutions per minute, and hit about 110mph is given by H(t)= -80t^2+340t-260 (in feet) a)how many seconds willpas...

algebra
this informations I have: The Physics of Baseball by Robert Adair - after t seconds, starting 1 sec after 35 angle, rotating with an initial backspin of 2000 revolutions per minute, and hit about 110mph is given by H(t)= -80t^2+340t-260 (in feet) a)how many seconds willpass be...

algebra
the distance traveled by the ball is given by D(t)=-5t^2+115t-110 (in feet) how far will the ball travel before it hits the ground?

algebra
H(t)= -80t2+340t-260 (in feet) How many seconds will pass before the ball hits the ground?

6th grade math
5ft 3 in. – 2ft 9 in. = ??

math HELP!
nobody has answered yet and this is the only question I need :( If angle A=30* and side b=4.0 km, how do I find side c? I know that this is a 30-60-90 triangle but I don't know how to find the hypotenuse. please help!

math
if angle A=30* and b=4.0 km, how do I find side c?

Grammar
was split.

science
A golfer takes two putts to sink his ball in the once he is on the green. The first putt displaces the ball 6.00 m east, and the second putt displaces it 5.40 m south. What displacement would put the ball in the hole in one putt? and how do I show this graphically?

physics
A girl delivering newspapers travels 3 blocks west, 4 blocks north, then 6 blocks east. What is her resultant displacement? what is the total distance that she travelled? Does anyone know a way to graph this?

physics
does anyone know a way to graph this? I know I'm suppose to use arrows..

physics
A girl delivering newspapers travels 3 blocks west, 4 blocks north, then 6 blocks east. What is her resultant displacement? what is the total distance that she travelled? and how do I graph this??

Physics
A hunter game in the woods keeps. Track of his movements from his car he travels 1/2 mile down a trail into the woods that leads directly north east. From there he bushwacks 3500 paces directly north before stopping for a drink. As he is putting his flask away he hears a noise...

geometry
907

geometry
907

Calculus
How many coefficients in the binomial series expansion of (1+x)^7 are divisible by 7?

Chem
Calculate the pH resulting from the addition of the following: 50mL 0.1M KOH and 50mL 0.1M HBr

Chemistry
How many moles of oxygen are required for the combustion of 25.5 g of magnesium?

ACC340
Using at least two sources in addition to the text, Write a 700- to 1,050-word paper describing how information systems are changing the various aspects of the accounting profession.

physics
A 10.8 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm 10.4 cm 10.4 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the water. (a) What are the fo...

physics
Assume that if the shear stress in steel exceeds about 4.00 108 N/m2, the steel ruptures. (a) Determine the shearing force necessary to shear a steel bolt 1.40 cm in diameter. (b) Determine the shearing force necessary to punch a 1.75-cm-diameter hole in a steel plate 0.690 cm...

Physics
For safety in climbing, a mountaineer uses a nylon rope that is 55 m long and 0.9 cm in diameter. When supporting a 82-kg climber, the rope elongates 2.0 m. Find its Young's modulus. I got 34737.433 but that is not the right answer please help!

algebra
what are the classification of polynomials according to the number of terms they have.

algebra
IMAGINE THAT A FILM CRITIC ENJOYS COLLECTING A VCD or dvd of the best movies you have seen and reviewed. create a portfolio to show the pictures and synopsis of the best movies you have seen and reviewed. make a detailed summary of the amounts spent for the vcd and dvd in your...

math
meredith picked 4 times as many green apples as red apples. if she picked a total of 20 apples how many green apples did she pick?

genetics
In a village with 4300 people, 1 in 90 males has a condition called 5-ARD that causes men to be pseudo-hermaphroditic. What is the frequency of autosomal recessive 5-ARD allele in this village, assuming Hardy-Weinberg equilibrium?

physics
A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 9 m, y =6 m, and has velocity vo =(4.5 m/s)i + (−4 m/s)j. The acceleration is given by a = (6 m/s2)i + (1 m/s2)j. What is the magnitude of the displacement from the origin (...

physics
A sky diver of mass 68 kg jumps from a slowly moving aircraft and eventually reaches her terminal velocity 46m/s Now consider the same sky diver jumping out of a faster airplane. At some point before she reaches her terminal velocity, she has velocity v2 of magnitude 46.5 m/s ...

statistics
Suppose that a random variable, X, follows a Normal distribution. Specifically, X~N(10, 4). What is the value for the standard deviation

statistics
Suppose that a random variable, X, follows a Normal distribution. Specifically, X~N(10, 4). What is the value for the standard deviation

Math
I can't seem to get the right answer for factoring 15x^3 + 25x^2 - 60x

math
If 6d-3d+2d=35 what does d=

english
What was Ferre's purpose in "The Youngest Doll" and did the ending help her achieve the purpose?

writing skills
knowing proper grammer

algebra
if an investor invest a total of $1900.00 and one earned 4% and the other 2% and his total profit is $66, how much did he invest in both funds?

Chemistry
How many Cal need to be removed to condense 500. g of steam at 150.0 Celsius to water at 37.0 Celsius?

Algebra
4=7+x+6x

physics
285. I answered the question correctly on a Topic Test Review on my E2020 physics class. :D hope it helps!

Math
Manny loves to eat Cajun pizza. Each square inch of pizza is 8 calories. He orders a slice of pizza from a pizza with a diameter of 16 inches that is cut with a central angle of 20 degrees. How many calories does he eat?

Chemistry
Ohhh.. my mistake I understand now. thanks!

Chemistry
Hello Dr. Bob, This was the equation: 2N2O(g) ---> 2N2(g) + O2

Chemistry
Which of the following reactions are spontaneous (favorable)? A] 2Mg(s) + O2(g) -> 2MgO(s) Delta G = -1137 kJ/mol .. B] NH3(g) + HCl(g) -> NH4Cl(s) Delta G = -91.1 kJ/mol ... C] AgCl(s) -> Ag+(aq) + Cl-(aq) Delta G = 55.6 kJ/mol .. D] 2H2(g) + O2(g) -> 2H2O(g) Delt...

business
Im on Lesson 2 Planning and leadership and im stuck on num 6 Can anyone help me. Which one of the following leadership stlyes could best charactertized by the statememt "let george do it"?

Chemistry
ohh i'm sorry i understand now thank you Dr. Bob!

Chemistry
Hi Dr. Bob. I'm coming up with outrageous numbers for when I try to use atm's with my Kp value.. please look! Kp = PPCl5/PPCl3PCl2 = (0.2855)/(0.01737)(0.01737) = 946.3 PCl3 : 0.01737-946.3 = -946.28 atm?! Cl2 : 0.04316 - 946.3 = -946.26 atm o.o PCl5 : 0.2855 + 2(946.3...

Chemistry
Hi lol Is this correct?: Kp = PPCl5/(PPCl3)(PCl2) = 217.0 torr/(13.2 torr)(13.2 torr) = 1.245 x/(263 torr - x) = 1.245 x = 327.435 - 1.245x 2.245x = 327.435 x = 145.85 torr = PPCl5 263.0 total torr - 145.85 PCl5 torr = 117.15 torr - 13.2 torr = 103.95 torr for Cl2 13.2 torr fo...

Chemistry
An equilibrium mixture of PCl5(g), PCl3(g), and Cl2(g) has a partial pressure of 217.0 torr, 13.2 torr, and 13.2 torr, respectively. A quantity of Cl2(g) is injected into the mixture, and the total pressure jumps to 263.0 torr. The appropriate chemical equation is PCl3(g) + Cl...

physics
6) A sub has a volume of 20 m3 and a density of 1500 kg/m3. It sinks to a depth of 40 meters. The density of sea water is 1025 kg/m3. a. What is the pressure on the sub at this depth? b. The sub has a window with a diameter of 30 cm. What is the net force on the window of the ...

French
It's okay! Thank you I'm sure someone else can help too. :)

French
I think I have to use "peur" instead of "craindre" though because the way it is use in the text? I was looking back and it says "peur" must be used with the subjontif. So, is "J'ai peur que je ne trouve pas un travail" incorrect? Sho...

French
How do I talk about fear in french? The activity is to introduce ourselves (what we like, don't like, find interesting, want to do in life) and then it says: "si vous avez peur de quelque chose." My understanding is that it is asking about things we are afraid of...

Math
here:) boy's flag pole's height: 5ft 15ft shadow length: x 8ft so you would just multiply 8 ft x 5 ft=40 then divide by 15 feet and get 2.6666 (repeating) so you could just round or whatever but then that would be your answer!

math
260

math
A car rents for $40 per day plus .20 cents per mile. your budget is $92 daily.What mileage will allow you to stay in budget?

statistics
A standard IQ test has a mean of 98 and a standard deviation of 16. We want to be 90% certain that we are within 8 IQ points of the true mean. Determine the sample size.

math
Very useful thanks! for mine I had 8 to 28 days, and my rate was different. I just typed: 0 to 3 integral 105+02t^2−09t into wolfram alpha and got 312 bicycles.

Biologu
Define posterior and anterior

Physics problem.. :/
A 8.7 kg block is on a frictionless surface. It is connected by a string over a pulley to a 8.6 kg hanging mass. Find the acceleration of the block. ?

chem
Is there any simple way to predict the volume of a second back titration done on a particular antacid substance after completing a titration the first time around?..Thank you every one for responses.

s.s
yeah i agree with Jeff, b/c you never know how or what their intelligence is capable.

Physics
ans above is incorrect, though I don't know what is wrong, just that I got it wrong

Algebra 2
James sold magazine subscriptions with three prices: $26, $19, $ 23. He sold 3 fewer of the $26 subscriptions than of the $19 subscriptions and sold a total of 32 subscriptions. If his total of sales amounted to $716, how many $23 subscriptions did James sell? Ace Rent a Car c...

Algebra 2
James sold magazine subscriptions with three prices: $26, $19, $ 23. He sold 3 fewer of the $26 subscriptions than of the $19 subscriptions and sold a total of 32 subscriptions. If his total of sales amounted to $716, how many $23 subscriptions did James sell? Ace Rent a Car c...

Calculus
Compute lim √(3-s)-√(3+s))/s s→0⁡

physics
A soccer ball of diameter 29 cm rolls without slipping at a linear speed of 3.6 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 18 m?

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