Monday
May 2, 2016

Posts by Jay

Total # Posts: 1,476

Chemistry
I followed this procedure but i was told the answer was incorrect. Any help would be appreciated.
April 23, 2011

Chemistry
Oh just kidding after much frustration and stepping away from the problem and coming back, I noticed that I messed up the density in my conversion. I had the right idea I just had to correct my mistake and then continue on with the molar mass of CaF2, then I divided 4 ...
April 18, 2011

Chemistry
Calcium fluoride is the well-known mineral fluorite. It is known that each unit cell contains four Ca2+ ions and eight F- ions and that the Ca2+ are arranged in a face-centered cubic lattice. The F- ions fill all the tetrahedral holes. The edge of the CaF2 unit cell is 5.46295...
April 18, 2011

Math
Can someone help me verify if this is correct? Gasoline usage for compact cars in Canada is a normal distribution with a mean of 33.3 km/l and with standard deviation of 7.3 km/L. Round your answers to one decimal place. a) What percentage of compact cars obtains 20km/L or ...
April 17, 2011

Math
anyone?
April 17, 2011

Math
Can someone help me verify if this is correct? Gasoline usage for compact cars in Canada is a normal distribution with a mean of 33.3 km/l and with standard deviation of 7.3 km/L. Round your answers to one decimal place. a) What percentage of compact cars obtains 20km/L or ...
April 17, 2011

Math
She added 4, multiplied the sum by -5, and subtracted 12. She then doubled the result and got -34. What number did Christa started with?
April 14, 2011

social studies
what was one of the increased use of the assembly line in the 1920's?
April 11, 2011

geography
what would happen if wheat was no longer a resource to the U.S.?
April 4, 2011

Physics
A 7.80-g bullet moving at 590 m/s penetrates a tree trunk to a depth of 4.8 cm. Assuming the friction force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.
March 24, 2011

chemistry
for an exotherimic reaction incresing the reaction temperature results in a (n)___k ?
March 22, 2011

chemistry
given reaction at equilibrium, if Kp=1.05 at 250 degree celcius, then kc =
March 22, 2011

algebra
8000, because 1m=100cm. You take the 100m/5cm=20 cubes. V=LxWxH. 20x20=400x20=8000
March 20, 2011

chem
how many moles of NaOH are needed to neutralize 50.0 Ml 0f ).242 M H2SO4 solution ?
March 19, 2011

physics
The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. The mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain through the block and tackle pulley system. What is the work done by the block and tackle ...
March 17, 2011

Physics
.455
March 15, 2011

Geometry
(20^2-7^2) = 351 sqrt of 351 = 18.7
March 9, 2011

Geometry
Find the length of the altitude of an isosceles triangle if one side has a length of 20 ft and a base of 14 ft?
March 9, 2011

English
Yeah but the entire essay is a narration, and in my question I had to pick out the thesis for both Frazier and his narrator. So I had to find in the essay where Frazier interjects his own thesis.
March 8, 2011

English
I am between two different thesis statements for Frazier either it is where the writing becomes italicized, "Remember to keep shower curtain inside tub at all times!" Or In the last paragraph from Operating the shower curtain is kind of tricky to there is no need ...
March 8, 2011

English
Within this I have another question. I am between two different thesis statements for Frazier either it is where the writing becomes italicized, "Remember to keep shower curtain inside tub at all times!" Or In the last paragraph from Operating the shower curtain is ...
March 8, 2011

English
Help! In Ian Frazier's essay How to Operate the Shower Curtain, what problems are users likely to encounter in using the shower curtain?
March 8, 2011

Physics
An electron is accelerated through 2200 V from rest and then enters a region where there is a uniform 1.30 T magnetic field directed perpendicularly to the electron's velocity.
March 7, 2011

math
6 + 3
March 7, 2011

math
A computer technician charges $40 for a house call and $38 per hour. The expression 40 + 38t is used to find the cost of a house call that lasts t hours. What is the cost of a house call that last 3 hours?
March 7, 2011

math
A phone compant uses the expression 1.25 + 0.10m to calculate the cost of a phone call that lasts m minutes. What is the cost of a call that last 20 minutes?
March 7, 2011

Calculus 12th grade (double check my work please)
2 and 3 are right. the first one is a trick question. It is a circle, so the tangent line is always 90 degrees to the radius
March 6, 2011

Algebra
Factor 2xsquared minus 5x minus 3.
March 5, 2011

Business Communications
Thank you, my understanding of when or where to use Ms. was wrong.
March 5, 2011

Business Communications
5: You are attending a professional conference and are privileged to be introduced to Caroline Peters. You know nothing about her except that she is an executive at a very successful company. You have and idea that you would like to talk over with her. How should you address ...
March 5, 2011

algebra
solve using the elimination method x+7y=58 -x+4y=30
February 27, 2011

English
Please find errors and correct them. To all ABC Internet Customers we have resolved the problem we were having with the Internet backbone for Southern Illinois. There was an NAP connection that was having trouble in Atlanta, Georgia. This is been resolved. The speed is much ...
February 24, 2011

ENGLISH
I am confussed as where to put the comma at tht you stated in the first sentence.
February 24, 2011

7th grade math
the perimeter of a rectangle is 125cm. its length is 3x and its width is 2x. what is x.
February 23, 2011

math
how do i put that in a equation form?
February 22, 2011

math
The quotient of h and -6 is at least 5.
February 22, 2011

math
The product of a number and 7 in not less than 21.
February 22, 2011

math
tom saved $550 to go on a school trip. the cost for a hotel room, including tax, is $80 per night. write and inequality to show the number of nights tom can stay at the hotel.
February 22, 2011

math
dante has at most $12 to spend on entertainment each week. so far this week, he spent $7.50. Write and solve an inequality to determine how much money dante can spend on entertainment the rest of the week.
February 22, 2011

math
dante has at most $12 to spend on entertainment each week. so far this week, he spent $7.50. Write and solve an inequality to determine how much money dante can spend on entertainment the rest of the week.
February 22, 2011

math
the rope James bought with his camping gear is 54 inches long. james needs to cut shorter pieces of rope that are 18 inches long. what are the possible number of pieces james can cut?
February 22, 2011

math
the gas tank in bob's car holds at most 15 gallons. He has already filled the tank with 7 gallons of gas. he will continue to fill the tank with g gallons more. Write and solve an inequality that shows all the values of g that bob can add to the cars tank.
February 22, 2011

Chem
22.8 kg of a metal has a density of 8.3g/mL. Calculate the volume of the metal sample?
February 22, 2011

physics
sqrt(1/8)=ans
February 21, 2011

algebra
A peddler is taking eggs to market to sell. The eggs are in a cart that holds up to 500 eggs. If the eggs are removed from the cart 2, 3, 4, 5,or 6 at a time, one egg is always left over. If the eggs are removed 7 at a time, no eggs are left over. How many eggs are in the cart.
February 19, 2011

Stats
I Have no idea
February 18, 2011

math
Explain how you can multiply 3 times 24 by using arrays. Then give the product.
February 17, 2011

Algebra
What are the solutions of the quadratic equation below? 4x2 - 30x + 45 = 0
February 17, 2011

math
Ricky has a total of 64pennies and quarters in a jar.He has 34 more pennies than quarters.How much money does ricky have in the jar.
February 15, 2011

math
If Juan can consume in one sitting one medium (12-inch diameter), deep-dish (1-inch thick) pizza, what is the minimum volume of his stomach?
February 14, 2011

math
The year 1991 was the last year of the twentieth century whose number is a palindrome, that is, reads the same backward and forward. How many years between the years 2000 and 3000 will be palindromic?
February 14, 2011

geography
in which country khmer rouge establish a brutal regime?
February 13, 2011

physics
A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 3.2 m/s. The acceleration of gravity is 9.81 m/s 2. What is the initial height of the bob?
February 11, 2011

algebra
In the lab, Jessica has two solutions that contain alcohol and is mixing them with each other. She uses times as much Solution A as Solution B. Solution A is alcohol and Solution B is alcohol. How many milliliters of Solution B does she use, if the resulting mixture has ...
February 11, 2011

math
mr.king, the owner of good morning groceries, wants to make a fence aea to put his carts in at night.he has 68 feet of fencing.what is the largest rectangular area he can fence? ( use only whole numbers)
February 10, 2011

physics
How fast (in rpm) must a centrifuge rotate if a particle 14.0 cm from the axis of rotation is to experience an acceleration of 70,000 g's?
February 10, 2011

physics
An electron and a proton are separated by 2.0 nm. (a) What is the magnitude of the force on the electron? (b) What is the net force on the system?
February 10, 2011

algebra
According to the world almanac, in 1990 there were 41,223,804 students enrolled in full-time day schools and there were 2,397,351 classroom teachers for these students. On average, how many pupils were there per teacher? Round answer to the nearest tenth.
February 8, 2011

Algebra
A revolving restaurant rotates one complete turn every 56 minutes. In the 21 minutes it takes to eat the peaches jubilee dessert, through how many degrees does the restaurant revolve?
February 8, 2011

match
the sum of two times a number and 5 is 11? equation form.
February 8, 2011

Business and Administrative Communications
Just wanted to say thank you very much for your help to Writeacher. I made a 95 on my test. Thanks again.
February 5, 2011

Business and Administrative Communications
Thank you so much. I greatly appreciate it.
February 5, 2011

Business and Administrative Communications
Ok, here is my corrected answers. #3: A #4: A #8: D #9: B
February 5, 2011

Business and Administrative Communications
I forgot the rest of the question on Num. 6. "Hush little baby," my grandfather would often whisper softly to me, "Don't say a word." ("Don't say a word." is underlined) thank you. I'm still thinking on the others.
February 5, 2011

Business and Administrative Communications
I am just not sure about these questions. Any help is greatly appreciated. 1: Identify the sentence with correct subject-verb agreement. A: Although the trend is shifting, careers in science and technology continue to attract predominately men. B: Although the trend is ...
February 5, 2011

Algebra 2
The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gld jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the number of grams in the ...
January 30, 2011

Algebra
What is the probability that a randomly selected three-digit number is divisible by 5? Express answer as a common fraction.
January 26, 2011

math
I need help with my math work
January 24, 2011

math
can some please solve everyone because i do get it. 102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219
January 24, 2011

math
can some please solve everyone because i do get it. 102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219
January 24, 2011

math
102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219 is not +3+6+3+6 TRY it yourself
January 24, 2011

Math
+3+6 is wrong
January 24, 2011

Math
102,105,111,114,120,123,129,_,_,_,_,_, 201,204,210,213,219
January 24, 2011

math
the formula P= 2L+2W can be used to calculate the perimeter of a rectangle. A regtangular swimming pool has a length of 50 meters and a width of 25 meters. What is the perimeter of the swimming pool
January 20, 2011

Math
A farmer has some chickens and some goats. Altogher there are 43 heads and 108 legs. How many chickens does the farmer have? How many goats does the farmer have?
January 18, 2011

expository composition
write about what is friendship.why is frienship important
January 18, 2011

Pre-Calculus
O thanks for the tip. New here. Well and friend helped me figure out 1 and 2 since they were basically the same question. I found out that I had trouble actually doing the algebra once I had the equations. But I'm still a little confused on how to set up number 3.
January 13, 2011

Pre-Calculus
1.The angle of elevation to top of a building from a point on the ground 20degrees and the angle of elevation from a point to 25 feet farther away is 12degrees. Find the height of the building. 2.From a point on the ground, the angle of elevation to the top of a 60-ft radio ...
January 13, 2011

Conductivity
Thank gosh... herooooo.... I have no clue with these webwork question
January 12, 2011

Reaction Descriptions
Is AE correct?
January 12, 2011

cjs203 criminal justice
no becasue if you are an inmate you proved to the people that is above you (the officers)that you have no say so
January 11, 2011

math
Explains how multiplication can help you find 7+7+7.
January 11, 2011

Algebra
A moving company charged $84 plus $50 an hour to move households across town. Another moving company charges $60 an hour for cross-town moves. For what lengths of time is the second moving company more expensive?
January 9, 2011

Math
What is greater $5.00 or the total value of all combinations of three coins you can make using only pennies, nickels,dimes,and quarters?
January 9, 2011

Math
What is greater $5.00 or the total value of all combinations of three coins you can make using only pennies, nickels,dimes,and quarters?
January 7, 2011

physics
two balls collide in a head on elastic collision and rebound in opposite directions. One ball has velocity 1.2 before the collision and -2.3 after. the other ball has a mass of 1.1 kg and a velocity of -4.2 before the collision. What is the mass of the first ball? What is the ...
January 6, 2011

world history
How did the Reformation in Great Britain affect the colonization of the New World
January 6, 2011

Calculus
This was on a test I took earlier and I'm going back now to fix my mistakes. Thank you Damon-you've been a big help!
January 1, 2011

Calculus
Hi, I'm absolutely stuck on this problem. This is for a newton's method/linearization unit. Find an equation for the curve in the xy-plane that passes through the point (1,-1) if its slope at x is always 3x^2+2.
January 1, 2011

physics
Mars has a mass of about 6.45 × 10 23 kg, and its moon Phobos has a mass of about 9.4 × 10 15 kg. If the magnitude of the gravitational force between the two bodies is 4.68 × 10 15 N, how far apart are Mars and Phobos? The value of the universal gravitational...
December 24, 2010

physics
A car is traveling at 55.1 km/h on a flat highway. The acceleration of gravity is 9.81 m/s 2. a) If the coefficient of kinetic friction between the road and the tires on a rainy day is 0.116, what is the minimum distance needed for the car to stop b) What is the ...
December 24, 2010

12th grade chem
Which of the following statements about ideal conditions for gases is considered untrue? A. 1 mole of gas occupies 22.4 L at STP. B. 2 moles of gas occupy 22.4 L at STP. C. STP equals 1 atm at 237 K. D. STP equals 101.3 kPa at 273 K.
December 20, 2010

physics
Your weight is 110 lb. What is your mass in kilograms? Answer in units of kg.
December 17, 2010

physics
A freight train has a mass of 2.1 × 10^7 kg. If the locomotive can exert a constant pull of 6.2 × 10^5 N, how long would it take to increase the speed of the train from rest to 77.7 km/h? (Disregard friction.)
December 17, 2010

physics
An object is resting on a flat surface with a coefficient of static friction of 0.65. If the mass os the object is 14Kg, what is the force necessary to start moving?
December 17, 2010

Math
In "the twelve days of christmas", how many gifts in all did "my true love give to me?
December 13, 2010

Math
In a twelve-team bowling league, if every team plays every other team four times during the season. How many games must be scheduled?
December 13, 2010

PHYSICS
A toy car in the figure below runs off the edge of a table that is h = 1.375 m high. The car lands d = 0.375 m from the base of the table. How long did it take the car to fall?
December 11, 2010

spanish
how do you say history in spanish
December 9, 2010

Math
How can you take 1 away from 19 and leave 20?
December 9, 2010

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