# Posts by Tiffany

Total # Posts: 926

**chemistry - DrBob?**

Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond 2. When an atom ...

*November 2, 2014*

**Chemistry**

Hi! Can you tell me if I chose the right options for my chemistry homework? My answers are at the bottom. 1. Electrostatic interaction is important for which type of bond? A. ionic bond B. triple covalent bond C. single covalent bond D. double covalent bond 2. When an atom ...

*November 2, 2014*

**math**

what is the consecutive positive odd numbers of 34,459,425?

*October 27, 2014*

**Chemistry**

1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high percentage of water helps ...

*October 21, 2014*

**math**

the number 34,459,425 is the product of several consecutive positive odd numbers. what is the greatest of these numbers?

*October 18, 2014*

**Chemistry**

If 14.23 mL of 0.203 M NaOH is required to neutralize .269 g of a monoprotic unknown acid, what is the molecular weight of the unknown acid?

*October 9, 2014*

**Math Help Please**

ABC Company is about 1614 feet tall. How long would it take an object falling freely from the top to reach the ground? Use a = 16t^2 I would appreciate any help. ^_^

*September 22, 2014*

**Pre-Calculus**

Hi! I'm having trouble with this math question; can someone help? Thanks! :) Given the function f(x)=x^2+9, solve. a.) Find f(-3) b.) Find f(x-2)

*September 16, 2014*

**English**

What is the relationship between literature and place in these narratives "from A Journey Through Texas" and "form of Plymouth plantation"

*September 15, 2014*

**Geometry**

M is the midpoint of LM LM=3x+5 LN=5x+40 Find MN I've tried to work this out several times and am pretty sure I start it off by 3x+5=5(x)+40 but I keep getting a negative answer or a fraction for X and know that is not right. Can someone please help me?

*September 11, 2014*

**Math plz check if correct**

If a term is multiplied by zero, the resulting product will always be ______.

*August 31, 2014*

**Please check my answers ASAP**

after i pass this test ill give u the anwers

*August 29, 2014*

**Algebra**

If you are paid a weekly base salary of $200 plus an hourly wage of $5.00, determine an equation for finding your weekly gross pay (P) for t hours. Specify an amount between 25 and 50 hours worked for 1 week and determine your gross pay for that week.

*August 14, 2014*

**English / Grammar**

Please help me word this sentence correctly: At its zenith, the depression saw nearly 25 percent of all workers and 37 percent of all non-farm workers completely out of work. I'm trying to say that at the peak of the depression, that's how many people were out of work...

*August 10, 2014*

**General Education**

I said that I chose D above.

*July 20, 2014*

**General Education**

Only circus animals with a clean bill of health will perform in today’s exhibition. A monkey, a poodle, and a horse will perform in today’s exhibition. No circus animals with a clean bill of health were prescribed medications this week. If the statements above are ...

*July 20, 2014*

**General Education**

Memmie: The greater the population near a restaurant, the more potential customers it has and the greater chance its popularity will spread through word-of-mouth. O’Sullivans Restaurant just opened in the very densely populated town of Redville, so its chances for success...

*July 20, 2014*

**General Education**

Thank you very much!!

*July 20, 2014*

**General Education**

<11{2[3(02)26]}> Aron: The two double A batteries in my CD player are dead, so the CD player doesn’t work. My television remote control, which also uses two double A batteries, works fine. So if I move the two batteries from my television remote control to my CD ...

*July 20, 2014*

**probability and statistics**

Suppose every student in your class got a score of 85% on an exam. What are the mean and standard deviation of those exam scores without doing any calculations? I want to say the mean is 100 and the standard deviation is 1 but I don't know why. If all students scored 85% ...

*June 17, 2014*

**Physics**

Josh starts his sled at the top of a 3.0m high hill that has a constant slope of 25 degrees. After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless but the coefficient of kinetic friction between his sled and the snow is .05. How far ...

*June 16, 2014*

**Numer Theory**

1+2+3+...+n=(1+n)+(2+(n-1))+(3+(n-2))+... =(1+n)+(1+n)+(1+n)+... How many copies of n+1 are in there in the second line? with n=6 and n=7

*June 7, 2014*

**SCI 275**

I just did this. Talk about asbestos !!!!!

*May 15, 2014*

**psychology**

Can someone give me an example of correlation and causation.

*April 16, 2014*

**Chemistry**

Thanks for your help. Sorry, I accidentally posted the question again without meaning to.

*April 14, 2014*

**Chemistry**

The problem is: Calculate the standard free-energy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)-> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e- -> Au; E = 1.498 Cr^3+ + 3e- -> Cr; E = -0.74 Ecell = 1.498 - (-0....

*April 14, 2014*

**General Chemistry**

Thanks for your help! I got it now. I messed up with second half reaction, it was supposed to be Cr^2+ + 2e- -> Cr; E = -0.91.

*April 14, 2014*

**General Chemistry**

The problem is: Calculate the standard free-energy change for the following reaction at 25 degrees Celsius. 2Au^+3(aq) + 3Cr(s)-> 2Au(s) + 3Cr^+2(aq) I worked it out, getting half reaction: Au^3+ + 3e- -> Au; E = 1.498 Cr^3+ + 3e- -> Cr; E = -0.74 Ecell = 1.498 - (-0....

*April 14, 2014*

**economics**

Do you feel there are any imbalances to our wage structure in our economy?

*April 2, 2014*

**statistics**

a resturant must choose 5 employees from 12 applicants. in how many ways can they do that?

*March 17, 2014*

**statistics**

a machine has 0.04 probability of producing a defective item. If it produces 6 items find: a. probability none is defective b. at least one is defective c. all are defective

*March 17, 2014*

**statistics**

a quiz had 6 questions, each with 4 possible answers (only one of which is correct). If you answer them at random, find the probability that all are correct and at least one is wrong.

*March 17, 2014*

**Verb - Check**

In the sentence above, which verb is the irregular verb? walked pushed lost dropped

*March 11, 2014*

**Chemistry**

Calculate the total heat energy needed to convert 110g of ice at -10°C to steam at 110°C..?

*February 25, 2014*

**Research and Statistics**

Explain how to accept and reject the null? How to identify the null and alternative hypothesis for t-tests in both statistical and experimental hypothesis?

*February 9, 2014*

**Human Relations Part 1**

C) Self-Confidence makes you seem more interesting to other people.

*February 6, 2014*

**College Algebra**

solve by the the substitution method 8x+9y=-39

*February 2, 2014*

**Social Studies (History)**

What changes in society occurred as a result of the Industrial Age?

*January 21, 2014*

**5TH GRADE MATH PLEASE HELP**

Draw an equation or function table. The cost of shipping mittens purchased online is $2 plus $6 for each of pair of mittens. What is the total cost of buying 5 pairs? P = pair of mittens. Can you please help me with this problem?

*January 14, 2014*

**5th grade math**

Draw an equation or function table. The cost of shipping mittens purchased online is $2 plus $6 for each of pair of mittens. What is the total cost of buying 5 pairs? P = pair of mittens. Can you please help me with this problem?

*January 14, 2014*

**science... PLEASE HELP!**

Within which group would all members show the greatest similarities: Phylum kingdom genus Or species?

*January 13, 2014*

**Social studies (History)**

What are three good questions to ask a student to see if they understand the Reconstruction era?

*January 9, 2014*

**Business Math**

What is the compound interest on the previous investment?

*January 8, 2014*

**Math question**

Thank you Ms.Sue

*January 7, 2014*

**Math question**

6yz?

*January 7, 2014*

**Math question**

y + 2y + 3z?

*January 7, 2014*

**Math question**

5x + 2(x + 6) 7x + 6 7x*2 + 12 7x + 12 7x (x+6)

*January 7, 2014*

**Social Stydies (History)**

Correction: How did the Civil War start the Reconstruction era?

*January 7, 2014*

**Social Stydies (History)**

What happened that started the creation of the Reconstruction era? I believe it was the Civil War, but I do not know if there was anymore situations that started it. And if not how did the Civil War start the War? Please help!

*January 7, 2014*

**History**

What are some positives and negatives results from the reconstruction era?

*January 6, 2014*

**Social Studies (History)**

What does it mean by "Uplift America's urban poor"?

*December 17, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = x^2 − 4x + 1 and y = −x^2 + 4x − 5 for x in [0, 3] Please don&#...

*December 16, 2013*

**Calculus**

the answer wasn't correct and I tried to do it myself and it is not working

*December 16, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Enclosed by y = x and y = x^4

*December 16, 2013*

**Calculus**

Evaluate the integral. HINT [Use a shortcut or see Example 4.] 4 to 3 x/(3x^2-6)dx

*December 16, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. HINT [See Example 3.] Enclosed by y = x and y = x^4

*December 15, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. (Round your answer to three decimal places.) Between y = e^x and y = x for x in [1, 2]

*December 11, 2013*

**Calculus**

thank you so much

*December 11, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Enclosed by y = x^2 − 4x + 1 and y = −x^2 + 4x − 5

*December 11, 2013*

**Calculus**

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Enclosed by y = x^2 − 4x + 1 and y = −x^2 + 4x − 5

*December 11, 2013*

**Science**

Which mineral property is the best way to tell the difference between each type of mineral?

*December 3, 2013*

**Science**

Which mineral property test is the best way to tell the difference between each type of mineral? Why? Mineral Properties are: -Luster -Color -Magnetism -Hardness -Streak -Cleavage There are other mineral properties like Odor and Taste.

*December 3, 2013*

**Grade 8 Math**

Oh, so all we need to do is make combinations, so that all the area adds up to 500m2. Thank you Steve and Aryan!

*November 23, 2013*

**Computers (Internet)**

Is this considered plagiarism? Original passage: A letter of thanks is a courteous acknowledgment of a gift or of something that was done for you. Another passage: A thank you note is a polite acknowledgment of a present or something nice someone did for you. Please also ...

*November 20, 2013*

**math**

integral problem 8^7dx=

*November 20, 2013*

**statistics**

David wants to rent an unfurnished apartment for next semester. He took a random sample of 9 apartments adversised in the local Halifax paper, and recorded the rental rates. The rents (in $ per month) were: 500 650 600 505 450 550 515 495 640 a) Find a 90% confidence interval ...

*November 14, 2013*

**Computers (Internet)**

What are 2 credible websites that has information with human evolution?

*November 8, 2013*

**internet**

What does, "How is the coverage on the subject?" mean?

*November 6, 2013*

**Internet**

What does it mean when a question says, "Has the article been peer reviewed?"

*November 6, 2013*

**Health part 2**

Go Ashworth

*November 5, 2013*

**Computers (internet)**

What steps would it take you take to discover if the article was accurate? Please list them in order.

*November 5, 2013*

**Computers (internet)**

How would you know whether a particular article from Wikipedia is accurate?

*November 5, 2013*

**math**

why couldn't the chicken find her egg

*November 5, 2013*

**Computers (internet)**

But what is the process if they have an argument/disagree whether or not the information should be included or not?

*November 4, 2013*

**Computers (internet)**

If there is some debate about whether a particular bit of information should or should not be included in an article, what is the process for deciding?

*November 4, 2013*

**Computers (internet information)**

Where does Wikipedia get its information?

*November 4, 2013*

**Science**

He said it measures mass. However, the question does not make sense for it to be mass. I said it was mass, but I have second thoughts of whether it could be grams that it is measuring.

*November 4, 2013*

**Math**

y = (x^2.7/9 + 7/x^2.7) (9x-1) dy/dx solve derivative and show work

*October 22, 2013*

**Math**

If I had the math problem: 2^4 x 3^9 ---- ---- 3^5 2^7 And I used the method of sorting the bases and subtracting the exponents. Would my answer be 2^-3 x 3^4?

*October 21, 2013*

**Physics**

Tangential acceleration and speed are constant. Tangential acceleration is zero

*October 8, 2013*

**chem 2**

calculate kc for reaction I2 (g)+Cl2 (g)⇌2ICl(g )Kp=81.9 (at 298 K)

*October 6, 2013*

**history**

. Parliament passed the Coercive Acts, known in America as the Intolerable Acts, in response to A. Patrick Henry's Resolves. B. the Boston Tea Party. C. insults addressed to the customs commissioners. D. the Boston Massacre.

*October 2, 2013*

**Math**

mr blackwell tracks sales of ski equipment each week for a month. complete the table to determine which week had the highest percent of ski equipment sales.

*September 24, 2013*

**Math**

a group of friends went on a hiking trip. they planned to hike a total of 38 miles. they want to complete 25% of the hike by the end of the first day.

*September 23, 2013*

**Accounting**

Annual interest of 5% paid if balance exceeds 800, $7 monthly fee if account falls below minimum balance, average monthly balance $1,160, account falls below $800 during 5 months. What is the annual net cost of this checking account?

*September 6, 2013*

**Physics**

how long will it take a bobsled with a velocity of 6 meters a second o stop if it decelerates at a rate of 3 meters per second?

*September 6, 2013*

**math**

The cost of renting tuxes for the Choral Society's formal is $20 down, plus $80 per tux. Express the cost C as a function of x, the number of tuxedos rented.

*September 3, 2013*

**3 grade math**

8000 counters

*August 22, 2013*

**Science**

False

*August 21, 2013*

**Physics**

thank you, i was making sure i was correct before i responded back to steve. i thought the 2 represented half of 4s, which is the delay of the echo

*August 19, 2013*

**Physics**

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel at 1530 m/s in seawater. Show that when the time delay of an echo to the ocean floor below is 4 s, the depth of the water is 3060 m. d=vt=1530ms x 2 =3060 not sure if i did it correct ...

*August 19, 2013*

**Physics**

In grandpa’s time automobiles were previously manufactured to be as rigid as possible, whereas autos are now designed to crumple upon impact. Why?

*August 4, 2013*

**Chemistry**

Need help identifying organic functional groups of Mifepristone's lewis structure.

*July 20, 2013*

**Chemistry**

An antacid contains 200mg of aluminum hydroxide and 200mg of magnesium hydroxide per capsule. a. How many moles of Al(OH)3 does each capsule contain? 2.56 x 10^-3 mol Al(OH)3 is that correct? b. What is the mass in milligrams of 0.0457 mole of magnesium hydroxide? 2.665 x 10^-...

*July 1, 2013*

**Chemistry**

If I have 1.93 x 10^-6 mole of chromium that would equal 100.35 mcg correct?

*July 1, 2013*

**Chemistry**

If I have 40mg of potassium, that would be how many moles of potassium? mols= grams/atomic number 0.04g/39.0983= .001023062 would equal 1.02 x 10^-3 correct? Did I do this problem correctly?

*July 1, 2013*

**calculus**

1.Ruth has 240 feet of fencing available to enclose a rectangular field. Express the area A of the rectangular field as a function x, where x is the length of the field. 2. For what value of x is the area largest? 3. What is the maximum area?

*June 20, 2013*

**Math**

If I had to report calculations precision to +/-1, 23.40-18.2= 5.2 948.75+62.45=1011.20 Would those answers be correct?

*June 20, 2013*

**Chemistry**

When one gram of gas, is burned, 55.5kJ of heat are released. How many pounds of methane gas must be burned to release 2.578 x 10^3kJ of heat?

*June 19, 2013*