Wednesday
April 16, 2014

Posts by Kim


Total # Posts: 1,970

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, \rm Na_3PO_4, for a laboratory experiment. How many grams of \rm Na_3PO_4 will be needed to produce 575 mL of a solution that has a concentration of \rm Na^+ ions of 1.00 \it M?

chemistry
What mass of carbon dioxide is produced from the complete combustion of 8.20×10−3 g of methane?

Statistics
The average mpg usage for a 2004 Ford Expedition 2WD for a sample of 10 tanks of gas was 17.0with a standard deviation of 0.8. For a Ford Explorer 2WD, the average mpg usage for a sample of 10 tanks of gas was 18.5 with a standard deviation of 1.0. (a) Assuming equal variances...

Statistics
A survey of 100 mayonnaise purchasers showed that 65 were loyal to one brand. For 100 bath soap purchasers, only 53 were loyal to one brand. a) Perform a two-tailed test comparing the proportion of brand-loyal customers at á=.05.b) Form a confidence interval for the dif...

math
sean is buying a player for $315. interest free payment plan. pays $25 each month. a. how much will he owe after 1 payment? 2 payments? 3 payments? b. use n to stand for the number of payments and a for the amount still owed. write an equation for calculating a for any value o...

Algebra 2
I've got some homework about ellipses and I am not sure if I am doing these right. So if you could check my answers I would appreciate it. Thanks!! 1.) Write an equation for an ellipse if the endpoints of the major axis are at (1,6) and (1,-6) and the endpoints of the mino...

economics
10. 10. The amount of time an individual is willing to offer for a wage depends on the a) all of the following b) value of time devoted to leisure activities c) boredom, discomfort, and aggravation associated with work d) value of time devoted to nonmarket work e) satisfaction...

statistics
Use Excel to find the p-value for each test statistic.a. Right-tailed test, t = +1.677, n = 13 b. Left-tailed test, t = −2.107, n = 5 c. Two-tailed test,t = −1.865, n = 34

statistics
Find the p-value for each test statistic. a. Right-tailed test, z=+1.34 b. Left-tailed test, z=−2.07 c. Two-tailed test, z=−1.69

science
scientific notation 78,990

english
Using the chicago style manuel, how would you cite this in in-text citation. Smith doesn’t disagree. (In fact, he claims he figured this out himself!) Citation: Smith, 2008, p. 15 There needs to be a citation after the word disagree and at the end after the parenthesis. B...

algebra
x=8

3rd grade
writing in math mrs. bradner has 30 tomato plants. she wants to plant the same number of plants in each row of her gardner. explain how she could decide the number of rows to plants.

calculus
A point in the first quadrant lies on the parabola y = x^2. Express the coordinates of P as function of the angle of inclination of the line joining P to the origin

algebra homework
1 minus the sqrt of x by the power of 2. I need help with the steps of solving this. I forgot how to do it. Thakns in advance.

math
For the pair of numbers (-1/5),(-1/2) My teacher wants us to find the quadratic equation with integral coefficients that has these numbers as solutions. I am not sure if I have the right equation for this. Could someone let me know if I am right or wrong and then show me how t...

math
Could someone show me how to solve this problem? I am trying to do it myself.I just want to make sure I am going about it the right way. Thank you. z=(SQRTx^2+y^2) (9)^-3/2 (8)^2/3

Chemistry
What mass of pure aluminum can be dissolved by 13mL of 1.6M KOH?

algebra
I need help solving this problem. -6/z+8=-8/3z+24+7. Could some one help me out with this.

algebra
I just want to see if my answer for this problem is correct or not. The aswer I have is 3x^2-3/7x^3-3x^2-17x+6. I was just wondering.Can I factor my answer? 3x-3/7x-3*x+1/x^2-1

science
most of mali is arid. what kind of vegetation would you find there?

english/Comm
I need help in writing 5 sentences about the role of education in successful finacial planning and I need to use a verb tense in each sentence?

algebra
I am having trouble solving this complex fraction. Can you adise me hoe to work it out? The denominator I am using is 4. Is that right? 1/x - 3/2 ---------- 3/4 + 1/x

statistic
A lottery ticket has a grand prize of $28 million. The probability of winning the grand prize is .000000023. Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Show your calculations and reasoning clearly.

Statistic
6.16 Calculate each binomial probability: a. X = 2, n = 8, ð = .10 b. X = 1, n = 10, ð = .40 c. X = 3, n = 12, ð = .70 d. X = 5, n = 9, ð = .90

Statistic
6.18 Calculate each binomial probability: a. Fewer than 4 successes in 12 trials with a 10 percent chance of success. b. At least 3 successes in 7 trials with a 40 percent chance of success. c. At most 9 successes in 14 trials with a 60 percent chance of success. d. More than ...

social studies
Compass rose

cell biology
draw the structure 1-palmitoyl-2-sn-glycero-3-phosphoinositol.using the drawing, illustrate the difference between saturated and unsaturated fatty acids 16:0 and 18:1, n-9

general chemistry
For a molecule with the formula AB2 the molecular shape is

English
Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence

math
8x-(4x+4)=28 x=?

algebra
wow, forgot the term, sorry. 8x-(4x+4)=28

algebra
solve 8x(4x+4)=28 x=?

math
What is a function, in your own words?

AP Chemistry 2
which combination of electronic geometries: I. linear II. trigonal planar III. tetrahedral IV. trigonal bypyramidal V. octahedral include all of the molecular geometries with pyramidal structures? Options: 1. II, III, IV, and V. 2. III and IV 3. III, IV, and V. 4. IV. 5. IV and V

AP Chemistry
what is the molecular shape of OCCl2 ion? C is the central atom. Options: 1. seesaw 2. tetrahedral 3. trigonal pyramidal 4. trigonal planar 5. trigonal bypyramidal 6. octahedral

pharmacy math
the iv dose of mannitol is 1.5g/kg, administered as 15% solution. how many mls of the solution should be administered to a 150 pound patient.

Recombinant DNA
When you digest Vibrio DNA with Sal1, wh do you get mostly large DNA fragments?

algebra
solve 2x > 10

math
if an iv dose of mannitol is 1.5g/kg,administrated as 15% solution.how many mls of the solution should be administered to 150 pound patient

math
Perform the addition on the 12-hour clock. 5 + 11 (Points : 1)

business
can you give me a business scenario

chemistry
True or False CH4 probably has a lower boiling point than SnH4

chemistry
How much heat would be relaesed by the condensation of 5.40g of steam at 100 (degrees)C and the subsequent cooling of the water to 25(degrees)C? [(delta)Hvap=40.7 KJ/mol at 100(degrees)C; Cp for H2O(l) is 4.18Jg-1 (degrees)c-1] A) 12.2 kj B) 18.3 kj C) 12.8 kj D) 13.9 kj E) 23...

chemistry
Ethyl alcohol (CH3CH2OH) has a heat of fusion of 5.01 kj/mol. How much heat in kj is required to melt 137g of ethyl alcohol.

Economic
ok

Economic
also i picked United States as the best place to raise a child but i need help starting the intro

Economic
Describing which country you would rank as the best place to raise a child. Be sure to include comparisons such as Literacy rates, infant mortality rates, and at least 5 metrics of the country that you feel might be important to your child. ***what do you about metrics?****

Economics
which country would rank as the best place to raise a child. Be sure to include comparisons such as Literacy rates, infant mortality rates, and any other comparison of a country that you feel might be important to your child.

algebra
Simplify i^-10 How exactly do I solve for this?

business
I'm tring to get on the right page of doing a business model for walmart tring to find the organization,commerce and occupation

chemistry
how many grams of CO2 are produced if 25.0 g of C6H6(BENZENE) was burned?

business
Your friend has asked you why the price of bananas is higher during certain times of the year. Using what you have learned about the laws of supply and demand, explain to your friend how the market affects price.

Intro to Finance
compare and contrast long- and short-term financing. Describe situations in which each type of financing would be used.

business
1. According to the Wolf article, the courts have imposed an "interactive-passive" test of jurisdiction. 2. @ Explain that distinction. According to the Wolf article, is advertising on the web alone enough to confer personal jurisdiction

algebra
ãx + 7 = 2ãx a)(3/7) b) (0) c) (7/3) d) 0

algebra
sqrt() x + 7 = 2sqrt()x a) {3/7} b) {0} c) {7/3} d) 0

5th grade
pressure systems bringing in hurricanes, tornados,and other storms

college
The first difference of a sequence is 6, 10,14,18. The sum of the first two terms of the original sequence is 24. Find the first three term of the original sequence. the first term of the original sequence is?

algebra
Simplify: sqrt() 27 - sqrt() 8 + 2 sqrt() 2 a) 0 b) 3 sqrt () - 2 sqrt() 2 c) 3 sqrt () - 4 sqrt () 2 d) 3 sqrt () 3

algebra
simplify the following radical expression: 3 sqrt () -216x^2/x^2 a) sqrt() -6x b)-6 c)-6 sqrt()x d) 6 sqrt()-x

statistics
that last post, the last number is 120

statistics
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first… a.Percentage of scores less than 100b.Relative frequency of sc...

algebra
What is the approximate value of sqrt()7? a) 1.9 b) 2.2 c) 1.5 d) 2.6

algebra
d^23

algebra
Thank you Jen

algebra
The area of a rectangle is 60 in ^2. The length is 4 inches greater than the width. Find the length. a) 6 in. b) 3 in. c) 4 in. d) 10 in.

algebra
Thank you Ms.Sue :)

algebra
b

algebra
The area of a rectangle is 72 in^2. The width is 6 inches greater than the length. Which expression represents? the width? a) w = 1 * 6 b) w = 1 + 6 c) w = 1 - 6 d) w = 6 - 1

algebra
Thanks

algebra
The area of a rectangle is 144in^2. The length is 4 times greater than the width. Which quadratic equation represents the area of the rectangle? a) w(w - 4) = 144 b) w(w + 4) = 144 c) w(4w) =144 d) w(4 - w) = 144

statistics
Give one example of when practical significance would outweigh statistical significance? Explain your rationale

COMM215
The teacher said they were going to grade the test over the weekend. Is it A. Pronoun shift in number B. Pronoun shift in person C. Ambiguous reference D. No error

chemistry
-log(2.62x10^-1) = 0.58

calculus
Use the first five terms of the exponential series and a calculator to approximate each value to the nearest hundredth. e^3.5 I honestly don't understand the concept or how to solve the problem. :(

Chemistry
Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==> Fe2O3 (s) Delta...

Chemistry
Calculate the enthalpy change (delta H) in kJ for the following reaction. 2Al(s) + Fe2O3 (s) ==> 2 Fe(s) + Al2O3(s) use enthalpy changes for the combustion of aluminum and iron. 2Al(s) + 3/2 O2(g) ==> Al2O3(s) Delta H: -1669.8 kJ 2Fe(s) + 3/2 O2(g) ==> Fe2O3 (s) Delta...

college
How do i find the slope of the line containing the pair of points (5,4) and (7,-10)slope m= what

Chemistry
When 2 mol of solid magnesium (Mg) combines with 1 mole of oxygen gas (O2), 2 mol of solid magnesium oxide (MgO) is formed and 1204kJ of heat is released. Write the thermochemical equation for this combustion reaction.

poetry
thank you so much :)

poetry
i need help on thinking of a IAMBIC and TROCHAIC poem.

English
correct or incorrect? Sally wants a new bicycle,but her mother and father will not buy her one. My little sister is a big baby;she cries all the time. Mr.Smith,my spanish teacher,is going on vacation. Parents want their children to go to college;however they do not always have...

english
Correct or incorrect? My Garden is full of water,because of yesterday's rain.

biology help
Pick one of the multiple choice that best matches the answer. For grasshoppers and locusts to be in the same family they must also be in the same a. order b. group c. genus d. species

poetry
thank you so much :)

poetry
oh yea sorry i meant troy.

poetry
thank you so much

poetry
I need help to think of 3 more lines to finish this poem. "Dashing trough the streets of Toy, Greeks with swords, and not one coy, Wooden horse was brought within, --------------------------------- --------------------------------- ---------------------------------

health
What are the key anatomical parts of the cardiovascular system and how does it work.

reimbursement methodologies
Robles, I am working on this exam right now. I am having problems with the question - What reimbursement amount will the hospital recive from Medicare? You say it is A. $12,856. What are your calculations? I just can't see how you came up with that amount. If Robles or som...

chemistry
How do you calculate the energy change required to take 45g of water vapor at 126 degrees C to ice at -25degrees C?

Algebra
solve for h. d=1.2 square root h

college
i need math help please. on a math problem

college algebra
4. The yearly cost T, in thousands of dollars, of tuition and required fees at a private college (includes two- and four-year schools and does not include room and board) can be approximated by T= 3/5n + 5 where n is the number of years since 1985. That is, corresponds to 1985...

science
which best describe the desert? a.thick,waxy leaves b.many large leaves. c.a shallow root system.d.a tall,woody stem.

4th grade science
on which of theseb do the phases of the moon have an affect? a. the season b.ocean tides c.day and night d.weather

science
On which of these do the phases of the moon have an affect? a.the season b.ocean tide c.day and night d.weather

science
on which of these do the phases of the moon have an affect? a.the season b.ocean tiders 3.day and night 4.weather

chemistry
Explain why the rate of a simple chemical reaction such as NO(g)+1/2O2(g)=NO2(g) is likey to be most rapid at the beginning of the reaction.

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