Friday

September 19, 2014

September 19, 2014

Total # Posts: 1,127

**chemistry**

interpret the following balanced equation into Particles, Moles, Mass: 2Al+3CuSO4== AL2(SO4)3+ 3Cu
*April 24, 2013*

**physics**

The period of the musical node E0 is 4.85 × 10-2 seconds. What is the frequency of this note?
*April 19, 2013*

**english**

should religious phares be taken out of money for a reasearch paper
*April 14, 2013*

**physics**

What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is .90
*April 10, 2013*

**Math**

If you deposit P dollars into a bank account paying an annual interest rate r, with n interest payments each year, the amount A you would have after t years is A=P(1+r/n)^nt. Kevin places $100 in a savings account earning 6% annual interest, compound quarterly. If Kevin adds ...
*April 1, 2013*

**calculus **

Find a formula for the fourth degree polynomial p(x) whose graph is symmetric about the y-axis, and which has a y-intercept of 4, and global maxima at (1,6) and(-1,6).
*March 29, 2013*

**I would like to understand my calc homework:/**

I think the whole non panicing ship sailed a long time ago haha. Sorry and thanks for the help!
*March 27, 2013*

**I would like to understand my calc homework:/**

Consider the differential equation given by dy/dx=(xy)/(2) A) sketch a slope field (I already did this) B) let f be the function that satisfies the given fifferential equation for the tangent line to the curve y=f(x) through the point (1,1). Then use your tangent line equation...
*March 27, 2013*

**Ellipses**

Given an ellipse; 4x^2+y^2-48x-4y+48=0, find the Center, find the Major Axis, find the Minor Axis & the Distance from C to Foci?
*March 27, 2013*

**ellipses**

given an ellipse; 2x^2+6y^2+32x-48y+212=0, find center, major axis, minor axis & distance from c to foci?
*March 27, 2013*

**Ellipses**

Given an ellipse; 8x^2+y^2+80x-6y+193=0, find center, major axis, minor axis, & distance from c to foci?
*March 27, 2013*

**ellipses**

Given an ellipse; 3x^2+5y^2-12x-50y+62=0, find the Center, the Major Axis, the Minor Axis, & the distance from C to Foci?
*March 27, 2013*

**ellipses**

Given an ellipse; 3x^2+5y^2-12x-50y+62=0, find the Center, Major Axis, Minor Axis, & the distance from C to Foci?
*March 27, 2013*

**English**

I have to annotate some notes and I'm not sure what a couple of these terms mean, your help would be much appreciated! Unifying Effect Analytical Writing Thesis Statement
*March 26, 2013*

**math**

4/x=radical11-1/3
*March 26, 2013*

**probability**

in a 2-card hand, what is the probability of holding only face cards?
*March 25, 2013*

**Chemistry**

would i divide 0.111M by 2
*March 22, 2013*

**Chemistry**

Calculate the molarity of the nitrate ion in a 0.111 M solution of calcium nitrate? so would I have to find the number of moles of (NO3)2 and then divide it by the 0.111 M to get the molarity of the nitrate ion I am so confused please explain the set up I don't want the ...
*March 22, 2013*

**Biology**

I know Darwin went the Galapagos islands and he viewed the finches found there how their beaks were different sizes and shapes because of the seeds they ate but they were all the same species but their beaks changed because of natural selection.
*March 20, 2013*

**Math**

What is the perimeter of an equilateral triangle with an altitude of 15m?
*March 14, 2013*

**Calculus**

Is there anybody who can actually walk me through working out the problem please?
*March 11, 2013*

**Calculus**

Find an equation of the tangent line to the given curve at the specified point: y=sqrt(x)/x+1, (4,2/5)
*March 11, 2013*

**college general chemistry**

3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq) how do I find the molar mass of precipitate.X hydrate
*March 10, 2013*

**Algebra 2**

Because of friction and air resistance, each swing of a pendulum is a little shorter than the previous one. The lengths of the swings form a geometric sequence. Suppose the first swing of the pendulum has an arc length of 100 cm and a return swing of 99 cm. a.)On which swing ...
*March 7, 2013*

**Physics**

A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95x10^6 N. What is the average separation between these charges? (kc=8.99×10^9 N • ...
*March 7, 2013*

**Math**

How high is a wall that casts a 10ft shadow @ the same time that a 6ft flag pole casts a 6ft shadow
*February 28, 2013*

**college general chemistry**

calculate the lowest whole number ratio of Moles of Mg/moles of O average of Moles of Mg/Moles of O Trial 1 mass of empty crucible and lid= 36.560 mass of Mg=0.348 mass of crucible, lid, and product=38.229 Trail 2 mass of empty crucible and lid=32.221 mass of Mg=0.340 mass of ...
*February 25, 2013*

**college general chemistry**

calculate the lowest whole number ratio of Moles of Mg/moles of O mass of empty crucible and lid= 36.560 mass of Mg=0.348 mass of crucible, lid, and product=38.229
*February 25, 2013*

**chemistry**

What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
*February 25, 2013*

**chemistry**

What is the limiting reagent for 6HCl + Fe2O3 = 2FeCl3 + 3H2O ? 6HCl has 18.44 moles and Fe2O3 has 2.91 moles. Also how many moles would FeCl3 produce?
*February 25, 2013*

**Spanish**

definite articles(el, la, los, las) must always agree with the noun. If it is masculine singular(el), if it is masculine plural(los), feminine singular(la), feminine plural(las). If you have a mixed group like your pasajeros above, then it would take a masculine plural ...
*February 15, 2013*

**Spanish**

1. Vengo de la taqueria 2. Venimos de la .... 3. Viene de la ..... 4. acabar de 5. acabas de estudiar 6. acaba de caminar por el parque 7. muchas vacas 8. muchos edificios grandes
*February 15, 2013*

**Bio**

In Drosophila, sepia colored eyes are due to a recessive allele s and wild type (red eye color) to its dominant allele s+. Sepia-eyed females are crossed to pure wild type males. What phenotypic and genotypic ratios are expected if the F1 males are then backcrossed to sepia-...
*February 13, 2013*

**math**

What are you trying to find the area???
*February 8, 2013*

**math**

Simplify the third root of 4 over the fifth root of 8
*February 8, 2013*

**Spanish please translate from spanish to english**

Prima in this context is referring to cousin(feminine). 1. Which is the older cousin? 2. Which is the younger cousin?
*February 8, 2013*

**Spanish**

5. c 6. d 7.d. 8. b. 9. a. 10. c
*February 4, 2013*

**Spanish**

1. B 2. Should be D. 3. C is correct 4. Should be A. It is asking what you(plural) do
*February 4, 2013*

**Alegebra I**

I need help please!!! On January 1, 2010, Chessville has a population of 50,000 people. Chessville then enters a period of population growth. Its population increases 7% each year. On the same day, Checkersville had a population of 70,000 people. Checkersville starts to ...
*February 3, 2013*

**college general chemistry**

it's right thank you so much so i just need to learn my significant figures yeah
*February 2, 2013*

**college general chemistry**

I am so lost I imput 6.188 because it's online homework and it said my answer was wrong you don't have to convert because it has the spot where you put the answer then cm^3
*February 2, 2013*

**college general chemistry**

Devron thats not right it said incorrect
*February 2, 2013*

**college general chemistry**

Calculate the volume of a rectangular solid with a thickness of 0.750 cm and an area of 8.25 cm2
*February 2, 2013*

**chemistry**

the helium in a 1.5L flask at 25degrees celcius exerts a pressure of 56.65kPa. How many moles of helium are in the flask?
*January 30, 2013*

**French**

How do you say " I like to..."?
*January 23, 2013*

**reading**

go to Google search doctor operations and see if that helps if not you can also search cool plastic surgery facts.
*January 23, 2013*

**Calculus**

Instructions were evaluate the integral. (x/1-x^4) dx I know that this form is the tanh inverse 1/1-x^2 but not sure how to substitute and start this problem. Please Help.
*January 22, 2013*

**Calculus**

Instructions were evaluate the integral. (x/1-x^4) dx I know that this form is the tanh inverse 1/1-x^2 but not sure how to substitute and start this problem. Please Help.
*January 22, 2013*

**Geometry**

DEFG is a rectangle. H is the intersection point of the two diagonals. DH= 3x – 3 and EG = x + 44. Find the value of x and the length of each diagonal.
*January 10, 2013*

**history**

Using the acronym M.A.I.N. ( militarism , alliances , imperialism , nationalism ) Describe how tension rose in Europe during the early 1900s ?
*January 9, 2013*

**Geometry **

the ration if the side lengths of two similar rectangles is 4:3. what is the ratio of the areas of the rectangles?
*January 9, 2013*

**Math**

7) Use Pascal's Triangle to find the coefficients for (a + b)5 . I need help with this?
*January 8, 2013*

**Probability and Statistics**

For question 1, here's the numbers you use: {20, 18, 17, 19, 22, 29, 16, 27, 24}. 1. Calculate the 50th percentile. For questions 2 and 3 use this number line: {16, 17, 18, 19, 20, 22, 24, 27, 29, 80} 2. Calculate the z-score for the 80 & explain what it means. (Explain ...
*January 4, 2013*

**AP CHEMISTRY**

What is the of a solution obtained by dissolving two extra-strength aspirin tablets, containing 594 of acetylsalicylic acid each, in 202 of water? The active ingredient in aspirin is acetylsalicylic acid , a monoprotic acid with Ka=3.3*10^-4 at 25 C. Can you provide the method...
*January 2, 2013*

**AP CHEMISTRY HELP**

Thank you so much. Also, would this same procedure be used for when there's an air bubble in the titration?
*December 20, 2012*

**AP CHEMISTRY HELP**

a) A student fails to wash the weighing paper when transferring the KHP sample into the beaker. What effect does this error have on the calculated molarity of the NAOH solution? Mathematically justify your answer. b) A student failed to notice an air bubble trapped in the tip ...
*December 20, 2012*

**math**

explian in writing how waould you use a number line to round 148 to the nerst ten
*December 4, 2012*

**physics, please help!**

(a) Find the current in each resistor of the circuit shown in the figure byusing the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoff’s laws: one with the node rule; a second using the loop rule ...
*November 28, 2012*

**precalculus**

Why can't you answer your own homework questions? You can't stroll through life being a cheater.
*November 27, 2012*

**Math Essentials**

How many ways can an IRS auditor select 4 of 9 tax returns for an audit?
*November 27, 2012*

**Chemistry**

True because I did learn that the lower the pH the more acidic it is.
*November 25, 2012*

**Chemistry**

The hydronium ion concentration in coffee is 1 x 10^-5 M. What is the pH of coffee?
*November 25, 2012*

**Chemistry**

The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? I just wanted to let the people that are being nice enough to help me know that this is for a study guide. It is not a test or quiz. :0) Thanks.
*November 25, 2012*

**chemistry**

I want to say because it has more of the reactant. Am I right?
*November 25, 2012*

**chemistry**

Write a balanced equation for the proton transfer reaction between water and phosphate ion. Determine in which direction the equilibrium is favored.
*November 25, 2012*

**Chemistry**

When a 5.00 ml sample of vinegar is titrated, 44.5 ml of 0.100 m NAOH solution is required to reach the end point. What i sthe concentration of vinegar in moles per liter of solution?
*November 25, 2012*

**Chemistry**

How much heat would be released by burning one gallon of octane? The density of octane is 0.703g/mL. 1 gallon= 3.79 liters.
*November 21, 2012*

**algebra**

Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? Justify your answer with an explanation or a graph. How might you explain your answer to someone who has not learned algebra?
*November 20, 2012*

**english**

Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. 1. Water skiing, sailing, and swimming are my favorite summer sports. 2. I enjoy playing the piano.
*November 16, 2012*

**physics**

A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11~ 10-8 ƒ¶m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 ƒ...
*November 15, 2012*

**Analytic Geometry**

Please help. I've been trying to solve these for more than an hour now but I can't seem to get it. 1) The segment joining (-4,7), (5,-2) is divided into two segments, one of which is 5 times as long as the other. Find the point of division. 2) The segment joining (4,0...
*November 14, 2012*

**Math**

Mr. Smith is purchasing a $190000 house. The down payment is 20% of the price of the house. He is given the choice of two mortgages: (A) a 25-year mortgage at a rate of 8%. Find: (i) The monthly payment: $ (ii) The total amount of interest paid: $ (B) a 15-year mortgage at a ...
*November 8, 2012*

**physical science**

34.5
*November 6, 2012*

**AED200**

a 700- to 1,050-word paper in which you outline the steps required for a multicultural education to be effective. Describe types of activities you would incorporate into your classroom that would support a multicultural education for all groups in this class. How could each ...
*November 3, 2012*

**Health**

So, it's C right?
*October 25, 2012*

**sociology**

Smiling and making polite remarks to people we do not like is an example of: A) making another feel embarrassment. B) exercising power over another. C) idealizing a personal performance. D) using tact.
*October 24, 2012*

**math**

find the interest rate to the nearest hundredth of a percent that will produce $2500, if $2000 is left at interest compounded semiannually for 4.5 year
*October 23, 2012*

**Chemistry**

What is the molar concentration of nitrate ions in a 0.161M magnesium nitrate(aq) solution?
*October 22, 2012*

**Business**

Choose a product you wish to market. You will follow this product through all four P's of Marketing. Describe your goal. Is it to maximize quantity, market penetration, market share, gross revenue, profit, or other goal (such as social change)? In your one to two page ...
*October 21, 2012*

**Marketing**

Identify the product concepts you used in determining the packaging. How does the packaging affect the effectiveness of the packaging? Are there any physical, social, or economic restraints that could limit or enhance your packaging? Market Research Product Concepts
*October 21, 2012*

**college physics**

A student moves a box of books by attaching a rope to the box and pulling with a force of 80.0 N at angle of 45o. The box of books has a mass of 25.0 kg and the coefficient of kinetic friction between the bottom of the box and the sidewalk is 0.43. Find the acceleration of the...
*October 21, 2012*

**Science**

. Which of the following is a measure of motion, with the derived units in m/s? power force resistance speed
*October 17, 2012*

**Geometry**

To approach a runway, a plane must began a 7 degree descent starting from the height of 2 miles above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of this approach?
*October 16, 2012*

**chemistry**

how much heat is released when 42.3 grams of ammonia is produced?
*October 8, 2012*

**Chemistry**

Muriatic acid is the common name of industrial-grade hydrochloric acid (HCl). One of its uses is to clean or etch concrete in preparation for sealing or painting. It is typically sold in 5.00 gallon buckets, with a concentration of 11.7 M. a.What volume of concentrated ...
*October 5, 2012*

**Stats**

On her first test in algebra, Mary earned a score of 75, and she made an 85 on her first psychology test. If the average score on the algebra test was a 68, with s=7, and the average on the psychology test was 91, with s=6, is Mary doing better in psychology or algebra. Why?
*October 4, 2012*

**math**

I am a two digit number, twice the sum of my digits is 22. The product of my digits is 24.My tens digit is greater than my ones digitwhat number am I?
*October 2, 2012*

**math**

Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5? 1) commutative property of addition 2) distributive property 3) additive identity 4) additive inverse
*October 1, 2012*

**writing**

what is the prepositional phrase in the following sentence, What is the price of the blue 2006 Honda Civic in the last row of cars on the lot?
*September 27, 2012*

**Math**

find a polynomial of least degree(having real coefficients) with zeros: 5, -2, 2i
*September 27, 2012*

**earth**

what is geography?
*September 20, 2012*

**Chemistry**

Which element has no stalbe isotopes: 82Pb, 27Co, 51Sb or 90Th?
*September 15, 2012*

**history**

What caused the rapid population growth of homo sapiens
*September 13, 2012*

**math**

x^2=8x-9 solve by completing the square to obtain exact solutions
*September 12, 2012*

**Physics**

Three men are trying to move a wardrobe. One pushes northward with a force of 100N; the second pushes eastward with a force of 173N; the third pushes in a direction 60 degrees west of south with a force of 200N. What is the resultant force on the wardrobe and it's direction?
*September 11, 2012*

**Chemistry**

In solution, hypochlorite ion is known to decompose with a second-order rate law. If [ClO-]0 = 0.0570 M and k = 2.06x10-4 M-1·min-1, calculate the half-life for this reaction 2ClO- 2Cl- + O2.
*September 6, 2012*

**Chemistry**

Calculate the temperature at which k = 2.0 s-1 if k = 10.0 s-1 at 371 K. The activation energy for the reaction is 30.0 kJ mol-1.
*September 6, 2012*

**math**

if the weight of a fish varies jointly as the length and the square of the girth, and if a fish 11 inches long with a girth of 7 inches weighs 0.7lbs, find the weight of a fish 23 inches long with a girth of 18 inches.
*September 5, 2012*

**math**

if Y varies jointly as X and the square of Z, and if Y=24 when X=2 and Z=6, find Y when X=10 and Z=9
*September 5, 2012*

**algebra**

an airplane is flying at an altitude of 3200 feet. an air- traffic controller in the tower keeps constant track of the planes distance from the tower in X feet. express the horizontal distance from the tower to a point directly below the airplane,d, in terms of X.
*September 5, 2012*

Pages: <<Prev | 1 | 2 | **3** | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Next>>