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Posts by Kim

Total # Posts: 2,618

chemistry
I have tried using that equation but I keep getting 4.something. My answer should be around 9.

chemistry
do i work this out the same way i do a pH problem with one volume?

chemistry
.70 L of a buffer solution that is 0.120 M in NH3 and 0.450 M in NH4Cl are diluted to 5.80 L with distilled water. What is the pH of the buffer? Kb of NH3 = 1.8 x 10^-5

math
A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20 dollars, the company sells 139 units per week. When the price is 34 dollars, the number of DVDs sold decreases to 91 units per week. Answer the ...

math
Fabulous!!! Thank you so much!!! He's having trouble grasping the concept so I didn't want to confuse him!! Thank you thank you thank you!!!!

math
8999 = 9000 8999 = 9000 8999 = 9000 I'm helping my 3rd grader and I'm getting confused!! (sad part is, I do basic math everyday!! LOL) And thank you so much for all your help!

math
round to the nearest thousand, nearest hundred, nearest ten 8999

math
round to the nearest ten 3,490

math
Round to the nearest thousand, nearest hundred, and the nearest ten 7509

math
3y+6y^3-2y^2+5y^3+5y^2-4y+2

math
3y+6y^3-2y^2+5y^3+5y^2-4y+2

science
What are the functions of indicator in acid-base titration?? Thank you!

Ohlone
how many moles of oxygen are consumed in burning 1.6 moles of benzene, C6H6?

math 5th grade
(17-A)SQUARED=2209 SOLVE FOR A

physical ed sports
name the six positions on a volleyball court IN SERVING ORDER(1st-6th)beginning with the first player serve.

Bio
Given an allele frequency of o.91 for a hypothetical red allele (bead), the percentage of blue alleles residing in the heterozygotes would be? a) 89% b) 90% c) 91% d) 92% e)93% i don't even know how to approach this question

physics
Water flows (v approx. 0) over a dam at the rate of 660 kg/s and falls vertically 86 m before striking the turbine blades. Calculate the rate at which mechanical energy is transferred to the turbine blades, assuming 53% efficiency.

physics
A 120-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the floor is frictionless, and for the next 17 m the coefficient of friction is 0.34. What is the final speed of the crate?

3rd grade
No couse 71 is a huge jump from 80

marketing
. In your own words describe at least three activities that represents each characteristic of a CRM plan; share of customer, lifetime value of a customer, customer equity or high-value customers.

physics
A 120 kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 400 N. For the first 17 m the floor is frictionless, and for the next 17 m the coefficient of friction is 0.34. What is the final speed of the crate?

statistics
A survey of 40 clothing stores reported these numbers of sales held during a randomly selected year 11-15,16-20,21-25,26-30, 31-35, 36-40 and the frequencies are 3,5,12,9,8,3 Caculate the mean variance and standard deviation

statistics
A survey of 40 clothing stores reported these numbers of sales held during a random,ly selected year

science
What does the () around an element mean, for example Mg(OH)2

Chem
You are titrating an unknown weak acid you hope to identify. Your titrant is a 0.0935 mol/L NaOH solution, and the titration requires 22.3 mL to reach the equivalence point. How many moles of acid were in your sample?

Physics Help!
A force of 36.1 N is required to start a 4.0 -kg box moving across a horizontal concrete floor. If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of kinetic friction? I got 0.072 as my answer and this is showing as incorrect. I did: 36.1...

physics
I got 0.072 as my answer and this is showing as in correct. I did: 36.1 - mu x 4.0kg x 9.8 = 4.0kg x 0.71 0.71 / 9.8 = 0.072

physics
A force of 36.1 N is required to start a 4.0 -kg box moving across a horizontal concrete floor. If the 36.1 N force continues, the box accelerates at 0.71 m/s^2. What is the coefficient of kinetic friction?

math
wow thank you now I understand

math
yes, I don't understand how to solve the problem

math
write in order from least to greatest the six numbers whose digits are 2,8,and 9

Stats
Instructions for Data Sets: In each data set, the dependent variable (response) is the first variable. Choose the independent variables (predictors) as you judge appropriate. Use a spreadsheet or a statistical package (e.g., MegaStat or MINITAB) to perform the necessary ...

English
What is the verb, the subject, the predicate nominatives, and direct object in the folling sentence 1.In September of 1739, David Brainerd entered Yale College. 2. Yale was a good school for young preachers. 3. After four months of school, Mr. Brainerd caught the measles. 4. ...

Alg. II
Solve y=Arcsin 1/2 A.) -5pi/6 B.) 5pi/6 C.) -pi/6 D.) pi/6

Accounting
What is the relationship between the amounts on the adjusted trial balance for an account and its ledger? Why is it necessary to prepare the formal financial statements if all the data are on the adjusted trial balance? I am having problems finding the answer to thsee two ...

college- Physics
David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70m/s^2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

Science- Physics
David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70m/s^2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

physics
A boat moves through the water of a river at 5 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.6 m/s, how long does it take the boat to make a round trip consisting of a 180 m displacement downstream followed by a ...

statistics
12) The regression equation Credits = 15.4 - .07 Work was fitted from a sample of 21 statistics students. Credits is the number of college credits taken and Work is the number of hours worked per week at an outside job. A) Interpret the slope. B) Is the intercept meaningful? ...

Statistics
12.22 A regression was performed using data on 16 randomly selected charities in 2003. The variables were Y = expenses (millions of dollars) and X = revenue (millions of dollars). (a)Write the fitted regression equation. (b)Construct a 95 percent confidence interval for the ...

5th grade English
Lake Baikal is in southeast Siberia. I have to identify the adjectives. southeast

college physics
A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up? Can someone please ...

algebra 1
arlene house of beauty offer a package of three facial for $48 each. your best friend hear that you plan to purchase the package from arlene and offers todothe work on you herself she wants you to buy any supplies needed and pay her $12 per hour for her time. the supplies you ...

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
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 ...

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 ...

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 ...

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. ...

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 ...

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=?

Chemistry
A scuba diver 60 ft below the ocean surface inhales 50.0 mL of compressed air from a scuba tank at a pressure of 3.00 atm and a temperature of 8.0 oC. What is the final pressure of air, in atmospheres, in the lungs, when the gas expands to 150.0 mL at a body temperature of 37 ...

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

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