Friday

August 22, 2014

August 22, 2014

Total # Posts: 1,823

**CHEMISTRY**

Which of these statements is not true? lithium reacts with carbon to form ionic carbides, Acetylene is neccesary for the formation of some carbide liquid ammonia is is used to form carbides All metals react with carbon to form carbides
*May 29, 2013*

**Chem**

The molar weight of MgSO4 is 120.366gmol-1. What is the mass/volume percentage of a 2.5M water solution of MgSO4?
*May 27, 2013*

**Physics**

Starting from rest, a skier slides 100 m down a 28 degree slope.How much longer does the run take if the coefficient of kinetic friction is 0.17 instead of 0?
*May 27, 2013*

**Statistics**

During the 2011-12 winter season, a homeowner received four deliveries of heating oil, as shown in the following table: Gallons Purchased Price per Gallon ($) 209 2.60 182 2.40 157 2.78 149 2.74 The homeowner claimed that the mean price he paid for oil during the season was (2...
*May 26, 2013*

**Statistics**

. The following data give the 2010 gross domestic product (in billions of dollars) for al 50 states. The data entered in alphabetical order by state (Source: Bureau of Economic Analysis). 173 49 254 103 1901 258 237 62 748 403 67 55 652 276 143 127 163 219 52 295 379 384 270 ...
*May 26, 2013*

**Statistics**

1. The following data give the amount of money (in dollars) that each of six Canadian social service charities spent to raise $100 in donations during 2010. The values, listed in that order, are for the Calgary Inter-Faith Food Bank Society, Covenant House Toronto, The ...
*May 26, 2013*

**Quantum Chemistry**

sdfg
*May 26, 2013*

**math**

If it is given tan(A-B) tanA-tanB/-1+tanAtanB and tanP-1/1+tanP=tan195 Find the value of P
*May 19, 2013*

**Math**

A wheel on Greg's bicycle is 0.3 m in diameter. Greg races the bicycle for 31 m. How many times does the wheel turn as the bicycle travels this distance?
*May 14, 2013*

**Public speaking**

When conducting research for supporting materials, it is imperative to remember: A. there is one right source for certain information. B. always to take notes and record. C. always do a personal interview. D. use only the most current source of information
*May 13, 2013*

**Environmental Science**

Consider the population situation in Italy or Germany; very low birth rates, an aging population, and eventual decline in overall numbers. For this week's individual work, please write a 1-2 page paper (counting body text only, not title or reference pages) in double-...
*May 9, 2013*

**calculus**

Given ensuing information, determine the least cost and the least cost mix of on- and off-shore pipe. The intake facility is in the water 2 miles vertically north of the shoreline The water filtration plant is on land 1 mile vertically south of the shoreline The intake and ...
*May 8, 2013*

**Math**

316/1 = x/3 cross multiply 316*3 = x 948 = x x = 948 similar cone volume
*May 8, 2013*

**Ms.Sue**

Ms.Sue, do you know how to do calc?
*May 8, 2013*

**calculus**

Given ensuing information, determine the least cost and the least cost mix of on- and off-shore pipe. -The intake facility is in the water 2 miles vertically north of the shoreline -The water filtration plant is on land 1 mile vertically south of the shoreline -The intake and ...
*May 8, 2013*

**Math**

32 is wrong 5/(3/5) = (5/1)*(3/5) flip and multiply (5/1)*(5/3) = 25/3
*May 8, 2013*

**Math**

dividing fractions is pretty simple. you take the denominator (the second fraction) and flip it. Then simply multiply the fractions ex. (1/2) divided by 5/7 First, flip, then multiply (1/2)*(7/5) so 7*1 = 7 and 5*2 = 10 therefor the answer is 7/10!
*May 8, 2013*

**Physics**

yea, no thank you!
*May 8, 2013*

**calculus**

thank you!!!
*May 8, 2013*

**calculus**

16. Given the following information, determine the constant speed, travel time, and cost that represent the minimum one-way trip delivery cost. Fuel costs per hour are equal to V^2/600 V is the speed in miles per hour Driver (labor) costs are $10 per hour One-way distance is ...
*May 8, 2013*

**calculus**

16. Given the following information, determine the constant speed, travel time, and cost that represent the minimum one-way trip delivery cost. Fuel costs per hour are equal to V^2/600 V is the speed in miles per hour Driver (labor) costs are $10 per hour One-way distance is ...
*May 8, 2013*

**calc**

can you tell me how you got √(x^2+4) and √((3-x)^2 + 1)
*May 8, 2013*

**statistics**

The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of 24.6 mpg and a standard deviation of 11.2 mpg. If 30 such cars are tested, what is the probability the average mpg achieved by ...
*May 5, 2013*

**maths**

The monthly standing charge for a electrical company is €12.50 plus a cost of €0.16 per unit of electricity used. A customers monthly bill was €156.18. Determine how many units of electricity the customer used in that month.
*May 3, 2013*

**Science**

1.Why do you think an FRH doesn’t come with water already in it? 2.Do you think there are small pieces or large pieces of magnesium metal in an FRH? Explain. 3. Why is it important that the reaction in an FRH be fast?
*May 1, 2013*

**Chemistry**

What should be the number of significant figures in the following calculation? It's an error calculation which is absolute value (True value - experimental value) / true value * 100 so it would be: absolute value [-601.7 - (-587)] / -601.7 * 100 Should the answer be 2.44 ...
*April 30, 2013*

**English**

ok thank you - so it is C...
*April 29, 2013*

**English**

Forget it - it's C...right?
*April 29, 2013*

**English**

8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won...
*April 29, 2013*

**English**

thank you
*April 29, 2013*

**English**

Mel Gibson , Hamlet and Macbeth in A...bonjour in B.,...Smithsonian and Time in C...and Our Town in D..
*April 29, 2013*

**English**

After reading your link. i think it is B. with bonjour being italicized.
*April 29, 2013*

**English**

What do you think it is? why would MEL GIBSON be italicized? In that sentence Mel gibso is italicized and hamlet or macbeth is italicized.
*April 29, 2013*

**English**

7. Identify the sentence that contains a word or phrase that should not be in italics. *Is Mel Gibson in the movie version of Hamlet or Macbeth? Lenny has trouble pronouncing the word bonjour. Glenda subscribes to Smithsonian and Time magazines. Thornton Wilder's play Our...
*April 29, 2013*

**english**

after Bites
*April 29, 2013*

**english**

I understand what you are saying now - I think it is B..
*April 29, 2013*

**english**

I have to pick the one that is pucuated or capitalized incorrectly. and i CANNOT pick two answers.
*April 29, 2013*

**english**

I understand that. I think it is A.
*April 29, 2013*

**english**

so which one would you go with?
*April 29, 2013*

**english**

9. Identify the sentence that contains an error in punctuation or capitalization. Perry asked if anyone knew the words to "Locked Out." "Wasn't that in the movie Reality Bites," asked Grace? Garrison yelled from the other room, "I loved that movie...
*April 29, 2013*

**english**

I think you've is incorrect.
*April 29, 2013*

**english**

now that I have reread them, I think its A.
*April 29, 2013*

**english**

why is that wrong? shouldn't it be in quotations.
*April 29, 2013*

**english**

8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It ...
*April 29, 2013*

**english**

Thank you
*April 29, 2013*

**english**

he wrote it about himself. that is an autobiography.
*April 29, 2013*

**english**

why not the third one?
*April 29, 2013*

**english**

11. All of the guests at the party partook in libations of all sorts to honor the hostess of the party. a meal of several courses *the pouring of drink as an act of respect the sharing of kind words when in a large group a form of gift giving that pays respect to a friend 12...
*April 29, 2013*

**History**

Thank You.
*April 26, 2013*

**History**

1. A decline in the number of U.S. manufacturing jobs was in part the result of *globalization. biotechnology. entrepreneurs. superstations. 2. The first modern computer was designed to benefit universities. the economy. *the military. corporations. 3. Which company developed...
*April 26, 2013*

**College algebra**

20x^2+12x
*April 24, 2013*

**physics**

Kelli weighs 392 N, and she is sitting on on a playground swing that hangs 0.4 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.1 m above the ground. If Kelli moves through the lowest point at 1.5 m/s, how much work was done on the swing by ...
*April 23, 2013*

**physics**

Kelli weighs 392 N, and she is sitting on on a playground swing that hangs 0.4 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.1 m above the ground. If Kelli moves through the lowest point at 1.5 m/s, how much work was done on the swing by ...
*April 23, 2013*

**accounting**

B 100000
*April 20, 2013*

**History**

4. What Reagan policy resulted in an increase in the federal budget deficit? *supply-side economics deregulation increased defense spending increased spending on social programs Thank You.
*April 19, 2013*

**3rd grade math**

What does 5 fracture each 1/2 mean?
*April 18, 2013*

**History**

Thanks. i figured it out. its high inflation.
*April 18, 2013*

**History**

4. Which of the following influenced the presidential election of 1980? high inflation low gas prices racial tensions *a war with Iraq Thank You.
*April 18, 2013*

**physics**

An 11-mm wide diffraction grating has rulings of 550 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to? The correct answer is 488nm but I cant seem to get that answer.
*April 17, 2013*

**physics**

An 11-mm wide diffraction grating has rulings of 550 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to? The correct answer is 488nm but I cant seem to get that answer.
*April 17, 2013*

**Math- steve or ms. sue**

does the data in the table represent a direct variation or an inverse variation? x 2 4 8 12 y 4 2 1 2/3 Choices: inverse variation; xy = 8 direct variation; y = 8x inverse variation;y/x = 8 *direct variation; y = 8/x Thank You.
*April 17, 2013*

**Clinical Chemistry**

DrBob???
*April 16, 2013*

**Clinical Chemistry**

Anyone here good with clinical chemistry, particularly separation assays and high performance liquid chromatography?
*April 16, 2013*

**College Algebra**

Ahh I can't believe I didn't see that! I appreciate your help!
*April 16, 2013*

**College Algebra**

Theres this chemistry problem im getting stuck in because i'm confusing myself with the math. Equation given = %O2 saturation = 100 x (pO2/(pO2 + K) %O2 = 35 K = 1.51 how do I calculate pO2?? I can't seem to cancel them out correctly. Answer = 0.813
*April 16, 2013*

**calculus**

Determine the maximum and minimum of each function on the given interval. a) = 2x^3 − 9x^2 ,−2 ≤ x ≤ 4 b) = 12x − x^3 , x∈ [−3,5]
*April 16, 2013*

**Grade 12 Calculus **

Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...
*April 15, 2013*

**MATH**

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???
*April 14, 2013*

**math**

4 * 15.00= $60
*April 14, 2013*

**pre calculus**

Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)/(sec^2 x))-1 = (f(x))^2 f(x)= ??
*April 14, 2013*

**pre calculus please help **

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???
*April 14, 2013*

**pre calc**

Find all solutions of the equation 3sin^2 x -7sin x +2 = 0 in the interval [0,2pi). The answer is x_1= ?? and x_2= ?? with x_1<x_2.
*April 14, 2013*

**pre calculus**

Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x cos x) = 1/(f(x) f(x)= ???
*April 14, 2013*

**math**

Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A=???
*April 14, 2013*

**Math**

2 divide 69.28 plz give work too!
*April 8, 2013*

**PHILOSOPHY**

Who claimed that our subjection to pain and pleasure should be the foundation for our lives?
*April 8, 2013*

**Math**

kkk thanks? i dont see how to do it tohugh.................................. though* ...........................................
*April 4, 2013*

**foundations of algebra**

if 950 watts gives a 164 mile radius, how much power is needed to get a 150,000 square mile area?
*April 4, 2013*

**Geography**

Why did East Pakistan feel discriminated against by west Pakistan
*April 4, 2013*

**advance functions gr12 HELP ASAP**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...
*April 2, 2013*

**advance functions gr12 HELP ASAP**

Using rational functions solve 7+ (1)/x = 1/(x-2) thank you
*April 2, 2013*

**advance functions gr12 (SORRY LAST ONE HAD A TYPO)**

Using rational functions solve 7+ (1)/x = 1/(x-2)
*April 2, 2013*

**advance functions gr12**

Using rational functions solve (7+ 1)/x = 1/(x-2)
*April 2, 2013*

**advance functions gr12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...
*April 2, 2013*

**advance functions gr 12**

Using rational functions solve 7+ 1(numerator) x (denominator) = 1 (numerator) x-2(demominator)
*April 2, 2013*

**advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...
*April 2, 2013*

**advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...
*April 1, 2013*

**Math advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...
*April 1, 2013*

**advance functions gr 12**

Using rational functions solve 3(numerator) 2x-4 (denominator) < (with a "-" underneath) 4 (numerator) x-2(demominator)
*April 1, 2013*

**Maths**

Suppose that a boat moves in a straight line with speed v through water with resistance proportional to the square of its speed v with initial speed v0 and initial position x0. Find its speed v(t) and position x(t) and conclude that the boat travels an infinite distance.
*March 25, 2013*

**chemistry**

An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light corresponding to the line in the emission spectrum with the smallest energy transition?
*March 25, 2013*

**chemistry**

An electron of wavelength 1.74*10-10m strikes an atom of ionized helium (He+). What is the wavelength (m) of the light corresponding to the line in the emission spectrum with the smallest energy transition?
*March 25, 2013*

**Chemistry (Immunoassays)**

What is the common component that makes a homogeneous competitive immunoassay? Describe one.
*March 24, 2013*

**calculus **

A polynomial function p(x) has a relative maximum at (3, -4) a relative minimum at (-1, -6), a relative maximum at (-5, 2) and no other critical points. How many zeros does p(x) have?
*March 23, 2013*

**College Chemistry/Lab Math**

Thanks for the help!
*March 17, 2013*

**College Chemistry/Lab Math**

Why did you multiply 0.0001g of gold/mL by 0.10mL? Shouldnt it be .50 mL? I say this because .10 is the volume of serum added, which does not contribute to the total amount of gold in the final solution.
*March 17, 2013*

**College Chemistry/Lab Math**

Sorry, in my 3rd step it should be "(.5ml)/(1)"
*March 17, 2013*

**College Chemistry/Lab Math**

I think I have this problem figured out correctly, but is there anyone who can tell me if I'm doing something wrong. The question is... "One troy ounce of gold is worth $380. There are 33.8 grams per troy ounce. You have a stock colloidal solution of a very fine gold ...
*March 17, 2013*

**math**

The diagram shows a sector OAB of a circle, centre O and radius10 cm. Angle AOB is theta radians. The point C lies on OB and iss such that AC is perpendicular to OB. The region R is bounded by the arc AB and by the lines AC and CB. The area of R is 22cm^2 1. show that theta=0....
*March 16, 2013*

**math**

How do I measure 5.25% of a 6% bleach for 1 gallon?
*March 15, 2013*

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