# Posts by Kelly

Total # Posts: 1,749

**spalding**

its c

**spalding**

im not sure would it be a?

**spalding**

the american bankers association is an example of a? a. labor union b. public interest group c. trade association d. single interest group

**statistics**

Four jelly beans are selected, one at a time from a bowl containing 6 black, 6 red and 6 green jelly beans. Let x represent the number of black jelly beans selected in 4 draws from the bowl. (A) If this experiment is completed without replacing the jelly beans, explain why x ...

**algebra**

If there are 8 red disks numbered 1 through 8, and 6 yellow disks numbered 9 through 14 placed in a box. Find the probability of selecting a red disk numbered 3.

**Chemistry**

40.0 ml of an acetic acid of unknown concentration is titrated with 0.100 M NaOH. After 20.0 mL of the base solution has been added, the pH in the titration flask is 5.10. What was the concentration of the original acetic acid solution? [Ka(CH3COOH) = 1.8 ´ 10–5]

**Algebra 2**

solve log2(3x-1)-log2(x-1)=log2(x+1) i have absolutely no idea how to solve this. can anyone help me, please?

**Math**

a grid has line at 90-degree angles. There are 12 lines in one direction and 9 lines in the other direction. Lines that are parallel are 11 inches apart. What is the least number of 12-inch floor tiles needed to cover all of the line interestions on the grid?

**physics**

An escalator is 15.0 m long. If a person stands on the escalator, it takes 38.0 s to ride from the bottom to the top. (a) If a person walks up the moving escalator with a speed of 0.500 m/s relative to the escalator, how long does it take the person to get to the top? (b) If a...

**English**

The first four relate, but i'm not sure how the last two relate

**physics**

You take the fact that vi=0, vf=x, delta t=5.5 and a=3.1 i think you use the formula vf=vi + a delta t to find your answer

**College Algebra**

And yes this is College Algebra...some of us are better at things other than math. I'm doing great after being graduated for 17 years, a 9 year old, a husband and a full time job. I'm loving my A average thank you.

**College Algebra**

This is the question...is it possible and why?

**College Algebra**

Is it possible for the x-intercept and the y-intercept of a straight line to be at the same point? Why or why not?

**english**

Please correct my essy. 1) please tell me what to change/add. 2)please check my thesis/summary. 4)Is my intorduction good, cammos, sentenc structures. Thanks for the time u took to look at my essay. One of the most controversial issue in America is illegal immigrates. Due to ...

**english**

Thanks for help and websites. Here is what I've written about the building fence so far. please tell me if I'm on the right path. I'm for building the fence and tell me if i need to correct my sentence. Thanks! Due to borders being unsafeguarded, illegal Aliens ...

**english**

Is this correct? Eating two cups of ice-cream every night is my habit because it has sweet and delicious taste, which always makes me feel hyper and pleased and recalls my happy moments in the past, such as party at the beach and my 18th birthday party.

**english**

Thanks you guys!

**english**

Thanks for the help on putting up fence. I need help with starting general information (Background on illegal immigration& putting fence) How can I start with the background information on putting up fence? is it approiate using "THey or It is said? I just need an idea to...

**chemistry**

A given mass of gas occupies a volume of 449 mL at 25°C and 740 mmHg. What will be the new volume at STP?

**english**

I am going to write about illegal immigration and my topic is putting fence on the border and I am for it. my question that i need help with is, How can fence reduce illegal immigration? Thanks for your help?

**English**

Nothin. I just have to search about what Moral aspect of the Justice and I am having hard time with it.

**Chemistry**

The Ka values of H2CO3 are shown below. Ka1 4.6 10-7 Ka2 4.4 10-11 What is the pH of a 0.17 M solution of Na2CO3?

**Statistics**

If the original variance is 9 than the standard deviation is 3. George's score of 70 is 5 standard deviations from the mean (70-55=15/3=5). Then if the mean is moved to 70 we need to add 5 standard deviations to is (5 x 5 = 25) so his new score is 95.

**Finance**

Your 401 (k) Account at East Coast Yachts You have been at your job for East Coat Yachts for a week now and have decided you need to sign up for the company’s 401(k) plan. Even after your decision with Sarah Brown, the Bledsoe Financial Services Representative, you are ...

**Maths**

$150 + $120 = $15x $270=$15x 270/15=18 trips

**chemistry**

3.0 g Al +HNO3 > Al(NO3)3 + H2 =how many liters

**Calculus**

I need help creating an equation for a piecewise defined function with two different rules, that is continuous but not differentiable at the point where the rules change, x=3. Please help to justify the answer.

**College Chemistry**

Write the condensed ground-stste electron configuration of the transition metal ion Mo3+

**College Chemistry**

Draw an orbital diagram showing valence electrons and write the condensed ground-state electron configuration for Se3+

**College Chemistry**

Write the electron configuration for Se using the noble gas core format.

**math**

let d=#dimes 10d=value dimes d-3=#nickels 5(d-3)=value nickels 10d+5(d-3)= 165 total value=$1.65 10d+5d-15=165 distribute 15d-15=165 combine like terms 15d=180 add 15 to both sides d=12 divide both sides by 15 You have 12 dimes and (d-3)nickels or (12-3) nickels which is 9 ...

**math**

Make a chart for the pieces of RT=D that you know. Rate X Time = Distance _____________________________________ ship 30 x 30x chopper 90 x-4 90(x-4) You know that at the time the helicopter overtakes the ship that the distances are equal. 30x=90(x-4) set distances equal 30x...

**math**

twelve posts stand equidistant along the stadium. starting at the first post, a runner reaches the eight post in 8 seconds. if he runs at a constant rate, how many seconds are needed to reach the twelfth post?

**maths**

46-6=40 40 / 2 = 20 20+6= 26

**english**

How can I fix this sentence? some of the questions I asked him are “Tell me reasons why did you end up staying at the hospital?” and “Tell me more about the pain in your right leg?”

**Chemistry**

81.9 degrees

**Chemistry**

What will be the final temperature if 2000g of copper at 95 degrees loses 10 kcal of heat?

**english**

thank you! It helps a lot

**Physics**

Michael Jordan, formerly of the Chicago Bulls basketball team, has some fanatic fans. They claim that he is able to jump and remain in the air for two full seconds from launch to landing. Evaluate this claim by calculating the maximum height that such a jump would attain. For ...

**Physics**

A golfer imparts a speed of 32.1 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in one" that ...

**chemistry**

or 21.075ml?

**chemistry**

so is the answer 1000ml?

**chemistry**

The formula for epsom salt is MgSO4 . 7H20 If 1.250 g of the compound is dissolved in water, calculate the number of milliliters of .200 M Ba(NO3)2 that would be required to precipitate all of the sulfate ions as barium sulfate. I got that right with an answer of 25.4 ...

**chemistry**

what is the experimental percent of sulfate in alum?

**math**

find the equation of the line pasiing throught the given point. Use function notation to write the equation. (-2,11)and(1,-4) f(x)

**physics**

4.4

**geometry**

(12x-15)=(3x+45)

**ap chemistry**

A mixture contains only NaCl and Fe(NO3)3. A .456 gram sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is dried and filtered, and its mass is determined to be .107 g. The mass of iron in the sample...

**Chemistry Help**

Thank you so much for your help, for the following question i am getting wrong answers answell. for the first one i got 42.7 and the 2nd I got 19.8. Could you help? Thank you for help in advance 4Cr(s) = 3O_2(g) -> 2Cr_2O_3(s) 2Cr(s)+O_2(g)->2SrO(s)

**Chemistry Help**

I have tried usingg the molecular formula, formulas in the text book but my answers dosent match any of the multiple choice answers, can someone help? For each of the reactions shown, calculate the mass (in grams) of the product formed when 10.7 g of the underlined reactant ...

**College Chemistry-Please help me**

I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)->Ba3(PO4)2+6H20(l) I'm totally lost on this question

**math**

16x^7y^12-10X^5y^8/2x^2y^9 =(16x^7y^12/2x^2y^9)-(10x^5y^8/2x^2y^9) =((16/2)*x^(7-2)*y^(12-9))-((10/2)*x^(5-2)*y^(8-9)) =8x^5y^3-5x^3y^-1 or =(8x^5y^3)-((5x^3)/y)

**college chemistry**

A chemical engineer determines the mass percent of iron in an ore sample by converting the Fe to Fe^2+ in acid and then titrating the Fe^2+ with MnO4^-. A 1.3510 g sample was dissolved in acid and then titrated with 39.32 mL of 0.03190 M of KMnO4. The balanced equation is: 8H...

**college chemistry**

I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)->Ba3(PO4)2+6H20(l)

**College Chemistry**

What is the oxidation number of (NH4)2SO4

**College Chemistry**

What is the oxidation number of Cr2(SO4)3

**College Chemistry**

I balanced the equation: HBr(aq) +NH3(aq)->NH4Br I need to find the ionic equation and the net ionic equation

**geometry**

mo bisects angle lmn,m angle lmn = 6x-20, m angle lmo= x+32 find m angle nmo but how if i don't know what lmn is From the above info you know lmo=nmo and lmo+nmo=lmn so 2(lmo)=lmn 2(x+32)=6x-20 2x+64=6x-20 2x+84=6x 84=4x 21=x you know lmo=x+32=21+32=53 you also know lmo=...

**College Chemistry**

Sodium hydroxide is used extensively in acid-base titrations because it is a strong inexpensive base. A sodium hydroxide solution was standardized by titrating 27 mL of 0.1628 M standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 2.44 mL, and the ...

**college chemistry**

You are given solutions of HCl and NaOH and must determine their concentrations. You use 38 mL of NaOH to titrate 100 mL of HCl and 23.2 mL of NaOH to titrate 50 mL of 0.0782 M H2SO4. Find the unknown concentrations.

**Math**

[(8*2)- 13]^3+(4-1)^2+4-2*3+|3|-|-6|=? [16-13]^3+(3)^2+4-2*3+3-6 [3]^3+9+4-6+3-6 27+9+4-6+3-6 36+4-6+3-6 40-6+3-6 34+3-6 37-6 31

**composition and communication**

I need help identifying verb tanses. I have to write 5 sentences about the " role education plays in successful financial planning" using different verb tenses. This is what I have: 1. Education plays an important role in a person’s financial status. (PRESENT ...

**chemistry**

Determine the oxidation state for the second element in SO3

**chemistry**

so what wouldit be for Mg3P2? if it has a subscript?

**chemistry**

Determine the oxidation state for the SECOND element in each of the following: NaF _____ Could you give me the steps to determine the answer

**geometry**

A thin wire is formed into a rectangle with an area of 24 cm2. If it is reshaped so that the 6 cm side is 2 cm longer, how will the area change?

**College Chemistry**

How many milliliters of a 0.200M AgNO3 solution are required to preccipitate most of the Cl^- ions from a solution containing 0.855 g of NaCl?

**College Chemistry**

Pb+NO3+Na2SO4-->?

**algebra**

5c+5d-8(7c-4d) distribute 5c+5d-56c+32d combine like terms -51c+37d

**College Chemistry**

The concentration of lead ions (Pb^2+) in a sample of polluted water that also contains nitrate ions (NO3) is determined by adding solid sodium sulfate (Na2SO4) to the sample of the water. Write the net ionic equation for the reaction. Do not forget to indicate the state of ...

**MATH**

consistent and independent because the answer is (1,4)

**college chemistry**

How many total moles of ions are released when the following sample dissolves completely in water: 5.15x10^-3 g Ca(NO3)2

**CHEMISTRY**

THE FOLLOWING SOLUTIONS AREMIXED TOGETHER: 121mL OF 1.54 M AgNO3 AND 45mL OF 1.07 M K2SO4 CALCULATE THE MOLAR CONCENTRATION OF Ag+ IONS IN THE FINAL SOLUTION

**math factoring**

(a)5x-3x^2 x(5-3x) remove GCF (b)25-x^2 (5+x)(5-x) Diff of 2 squares

**Chem**

THE FOLLOWING SOLUTIONS AREMIXED TOGETHER: 121mL OF 1.54 M AgNO3 AND 45mL OF 1.07 M K2SO4 CALCULATE THE MOLAR CONCENTRATION OF Ag+ IONS IN THE FINAL SOLUTION

**chemistry**

A 1.500-g sample of a mixture containing only Cu2O and CuO was treated with hydrogen to prduce 1.252 g pure copper metal. Calculate the percentage composition (by mass) of the mixture.

**chemistry**

a mixture containing only sodium chloride and potassium chloride has a mass of 4 g. when this sample is dissolved in water and excess silver nitrate is added a white solid forms. after filreation and drying the solid silver chloride has the mass of 8.5904g. calculate the mass ...

**Chemistry**

A 40.0g sample of an unknow, yellowish-brown, pure metal was heated to 62degrees Celcius and put into a coffee cup calorimeter containing 85.0g of watera at 19.2 degrees Celcius. The water was heated by the hot metal to a temperature of 21.0 degrees Celcius. What is the ...

**Chemistry**

A 40.0g sample of an unknow, yellowish-brown, pure metal was heated to 62degrees Celcius and put into a coffee cup calorimeter containing 85.0g of watera at 19.2 degrees Celcius. The water was heated by the hot metal to a temperature of 21.0 degrees Celcius. What is the ...

**chemistry**

For OCTANE, what is the ratio of Carbon atoms to Hydrogen atoms in a molecule? It's specified that Octane undergoes complete combustion to form 8L of Carbon Dioxide & 9L of Water at constant temp and pressure. thanks :)

**chemistry**

Substances A and B with the same mass and the same initial temperature absorb the same amount of heat energy. The final temperature of A is higher than the final temperature of B. Which substance would have the higher specific heat? Why?

**algebra**

Solve P=2L+2W for L. L=

**math**

what is 6 to the second power

**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 ...

**college physics**

An airport worker needs to make it across a luggage belt in order to retrieve a stuck suitcase. The belt is moving with 1.6 m/s, and the worker can run with v=1.7 m/s. If he wants to make it straight across the d=2.3 m wide belt, how long will it take for him to reach the ...

**Math**

BW made c cookies to divide evenly amoung O,TS,SB,and RD and BW himself. Write an algebraic expression that represents the number of cookies each person will receive. I have no clue...sorry those were intitals the problem characters had long names.

**Physics**

A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? ***Can someone please step me through the problem step by step?***

**chemistry**

in trial one the mass of silver oxide is .5g. The mass of silver metal product is .431 grams. In trial two the silver oxide=.498 and silver metal=.388. Use the conservation of mass to calculate the mass of oxygen that combined with the silver

**physics**

how do you divide 1.49457 x 10^11 by 3.00 x 10^8? thanks for the help

**algebra**

solve the equation m-26/5-5m-28/6=2

**Physics**

The ratio R at which paint can be sprayed from a spray gun may be expressed as R=a.t and R is measured in m3 / s and time is measured in seconds, what are the units of "a"?

**physics**

Using dimensional analysis, which one of the following equations is dimensionally correct? ( a → m/s2, v → m/s, x → m , t → s)

**math**

312 yd.

**Math**

I don't know if I suppose to do LCM or other?I'm going to need help. Beyonce visits her parents every 6 days and Jay-Z vists his parents every 9 days. When will it be the first day they visit there parents on the same day?

**economics**

What institutions might arise in the free market to help a person decide whether to accept or reject a particular private monetary note?

**Math**

what is are some free websites that can give me rational and irrational practice?

**chemistry**

thank you

**chemistry**

calculate the specific heat (j/g C ) for each of the following: -an 18.5-g sample of tin that absorbs 183 J when its temperature inceases from 35.0 degrees C to 78.6 degrees C

**chemistry**

how to simplify (x 3-x)/(x-1)?