Monday

November 30, 2015
Total # Posts: 563

**college algebra**

(9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right
*January 23, 2013*

**social impact on technology**

i think the answer is productivity. It also has offshoring.
*January 23, 2013*

**social impact on technology**

what the biggest cause of unemployment today? A. outsourcing B. Productivity
*January 23, 2013*

**college algebra**

Order of operation done by hand
*January 22, 2013*

**college algebra**

13√9+16 |5-7|^2 I got 9.40 but I think I might have done it wrong
*January 22, 2013*

**college algebra**

Find the center and radius of the circle (x+3)^2+(y-5)^2=13 I think the center is (-3,5) Radius is (13) but I don't know how to show the work for it.
*January 22, 2013*

**physics **

A uniforbm beam 6m long weighing 4kg rest on supports at p and q placed left and right 10m from each end of the beam weights of mass 10kg and 8kg are placed near p and q respectively on each end of the beam . calculate the reactions at p and q ?
*January 20, 2013*

**social impact on technology**

The article "Young at Risk" purposes that the young of humans and animals are more vulnerable to chemical pollutant exposure due to all of the following reasons except that: A. their brains are less sensitive than those of mature humans and animals. B. the young et ...
*January 18, 2013*

**tenchnology**

According to the textbook, there is an infinte amoount of time that our civilization can exist based on the following? A. our civilization is based on non-renewable resources B. Our production of nuclear weapons will lead to mass distruction C. At the present birth and death ...
*January 17, 2013*

**4th. grade english**

what is the rule for why "achieved' is spelled that way instaed of "achieveed"?
*January 16, 2013*

**math**

you are 6 years older than your sister she is 4 years older than your brother. write expressions to show your age and your sisters age if your brother is 4 years old.
*January 10, 2013*

**composition**

Develop a “Welcome Letter” for the visiting students. Keep in mind that the students have not lived in the United States nor attended a U.S. college before. What do they need to know about making and keeping friends here in the U.S.?
*December 17, 2012*

**Math**

4 9/20 make sure you have the same denominator. this is a subtraction problem. 7 1/4 turns into 7 5/20 and 2 4/5 turns into 2 16/20. since you can not subtract 16/20 from 5/20 you need to borrow from the whole which is 7. so 7 becomes a 6 and you add 20/20 +5/20 and get 25/20 ...
*December 5, 2012*

**Math**

make your denomimators the same. change 7 1/2 to 7 5/10 and subtract 6 3/10 = 1 2/10 or simplify and make it 1 1/5
*December 5, 2012*

**science**

its ok dear leaf no worries
*November 29, 2012*

**english**

where can I get a comparism and contrast for the perils of indifference and the power of non-violence
*November 7, 2012*

**BIOLOGY/CHEMISTY**

a student uses the unduiluted glucose stock solution in a reaction and finds that the absorbance values over 90 seceonds are all 1.900. What does this result tell you abou the enzyme activity of glucose oxidase in this reaction after the 90 seconds time point? Would it be ...
*October 28, 2012*

**math**

Since 12n = 12(5m+1)= 60m +12, our goal is to now count integers m such that 100 less than or equal to 60m +12<1000. Subtracing 12 from each part of the inequality, we get 88 lees than or equal to 60m<988. Dividing by 60, we get 2 less than or equal to m less than or ...
*October 25, 2012*

**math**

How many three-digit integers are multiples of both 4 and 6 and have a unit digit of 2?
*October 25, 2012*

**Physics**

PLEASE SOMEONE HELP ME WITH THIS DARN QUIZ. I'm so lost and all my teachers are too 'BUSY' to help me. :/ I'm getting so sick and tired of studying and not getting it but then having to take the blame for my instructor's folly. 2. Which of the following is...
*October 17, 2012*

**chemistry**

Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
*September 24, 2012*

**chemistry**

Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you woulddo–step-by-step–when preparing thissolution. Also show all calculations. Be sure all amounts include un
*September 24, 2012*

**Biology**

Write a brief description of the procedure required to make 10mL each of 2 M, 1.5 M, and 1 M NaCl solution from a 2 M Stock NaCl. Write the description.
*September 23, 2012*

**Biology**

Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
*September 23, 2012*

**Chemistry**

Need Help!! Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water. I got help earlier but still could not figure out the calculations. Please help, it has been a while since i took chemistry. Thank you soo much
*August 29, 2012*

**Chemistry**

Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water. Thank you
*August 29, 2012*

**algebra 1**

how do you solve this equation with the substitution method. 1) 6x + 4y = 6/5
*August 21, 2012*

**geometry**

In Exam Figure 7, AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B. Round your answer to two decimal places.
*August 19, 2012*

**Chemistry**

the structural formula,with atoms A,B,and C unspecified,is? [Q2] the formula is C3 H6 Br2 If the compounds is called 1,2-dibromopropane, A,B,and C must be...what?
*August 5, 2012*

**Chemistry**

in describing an equilibrium reaction involving hydrogen gas, iodine gas, and hydrogen iodide gas, all of the statements about equation Q=[Hl]2 divide [H2][l2]are true except for which one?
*August 5, 2012*

**chemistry**

with the exception of the transition elements, Groups3-12 in the periodic Table, and the noble gases, Group 18, atomic radii___ within periods, while atomic radii___ within groups.
*August 5, 2012*

**chemistry**

if a small piece of sodium is dropped into water,it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na(s)+2H2O(l) 2NaOH(aq)+H2(g),the sodium hydroxide that is formed is a..
*August 5, 2012*

**Math**

find the value of the expression 3*45 divide 9-2 (10-6) -4 divide 2
*July 3, 2012*

**Mathmatic**

7+7.9 add
*June 24, 2012*

**SCI -241**

I having problems understanding food labels assignment
*June 15, 2012*

**language**

what is bssmyale unscramble
*June 10, 2012*

**Finance**

How long will it take you to accumulate $10,000 if you save $250 a month starting next month? Assume you can earn an APR of 2.4% on your savings.
*May 14, 2012*

**health**

Your health care organization has called upon you to lead a work team to identify service-quality problems within the environment. Individual Portion Answer the following questions about work teams: What are the benefits of a strong work team? What are the common problems that...
*May 6, 2012*

**health**

Your health care organization has called upon you to lead a work team to identify service-quality problems within the environment. Individual Portion Answer the following questions about work teams: What are the benefits of a strong work team? What are the common problems that...
*May 6, 2012*

**Chemistry**

Thank you. You have been so helpful. I appreciate it. Deb
*April 30, 2012*

**Chemistry**

Dr. Bob, thank you kindly. Do you know if copper sulfate is considered an mm solution? Thanks. Deb
*April 30, 2012*

**Chemistry**

Dr. Bob, thanks for answering. What does w/w and w/v and soln mean? i am an a student in chemistry but am having difficulty with this piece. Deb
*April 30, 2012*

**Chemistry **

How do you prepare 2% Cu S04? How does this solution differ from 2M CuS04? I am stumped. Thank you. Deb
*April 30, 2012*

**government**

Describe one or two ways in which the US government subsidies might affect the rate of production for petroleum within the US. Should the US use tax dollars to increase subsidies and thereby encourage more oil exploration and petroleum production associated with new drilling ...
*April 24, 2012*

**Science**

A boat is moving east at 50 km/ hr on a river that is going west at 7 km/hr. What is the velocity of the boat.
*April 12, 2012*

**Chemistry 2**

calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O that could ...
*April 7, 2012*

**Chemistry 2**

Which is the oxidizing agent in the reaction below. Cr2O72- + 6S2O32- +14H+ > 2Cr3+ + 3S4O62- +7H20 A. Cr3+ B. S4O62- C. Cr2O62- D. S2O32- E. H+ I believe it's D or is it C not 100% sure please help. THANKS
*April 5, 2012*

**Chemistry 2 **

Which is reduced in the following reaction: Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
*April 5, 2012*

**Chemistry 2**

_________is reduced in the following reaction: Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
*April 5, 2012*

**Chemistry**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find number of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2 HELP**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find number of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

left a line out of answer 1.546x10-2mols CuSO4x2=3.09x10-2 mole ions
*April 2, 2012*

**Chem 2**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

Is this the correct formula for dichlorotetramminechromium (III) nitrate? (CrCl2(NH3)4 NO3)
*April 1, 2012*

**Chem 2**

Is this how I right this formula for dichlorodiaquoplatinum (II) (PtCl2(H2O)2)
*April 1, 2012*

**chemistry**

The oxyanion, CrO4 2- the chromate ion, is not in the solubility rules in our text. Examine your results from this lab and write a solubility rule CrO4 2-, the chromate ion. Cite experimental eidence to support your rule. This what our professor wants us to do.
*April 1, 2012*

**chemistry**

I need some help with making a solubility rule for CrO4 -2 for my chemistry homework.
*April 1, 2012*

**chemistry**

Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10–20, in 0.91 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ⇌ Cu(NH3)42+, K = 5.0 × 1013. Round your answer to two significant figures and do NOT use scientific notation.
*March 31, 2012*

**Chem 2**

need to figure out how to calculate. the value of DeltaH for the reaction below is -72kj_____kj of heat are released when 1.0 mole of HBr is formed in this reaction. H2(g)*Br2(g)> 2HBr(g) I know the answer is 36 but need help
*March 30, 2012*

**Chem 2**

i need help setting this problem up i know what the answer is but need to know how to get to it. calculate the kinetic energy in joules of an automobile weighing 2135lb and traveling at 55 mph (1 mile=1.6093km, 1lb=453.59g)
*March 30, 2012*

**Chem 2**

Checking to see if I did this right? Titration of HN03 titrated with NaOH ending result is 1.38. Titration A, endpoint pH = 8 is pKa or pKb= 1.38x106=5.861 and Titration of NH03 titrated with KOH ending results 1.54. Titration B, endpoint pH = 7 is KaorKb= Ka=1.54x105
*March 21, 2012*

**Chem 2 **

5 drops of 0.10M NaOH were added to 20mL of the buffer problem, the pHwent from 3.40 to 3.43. Write a net ionic equiation to explain why the pH did not go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20mL 0.00040. HELP PLEASE....
*March 6, 2012*

**Chem 2**

Which of the following has the highest buffer capacity? A. 0.10M H2PO4-/0.10M HPO4 2- B. 0.50M H2PO4-/0.10M HPO4 2- C. 0.10M H2PO4-/0.50M HPO4 2- D. 0.50M H2PO4-/0.50M HPOr 2- E. They all have the same buffer capacity. Double checking I believe C is the right answer.
*March 5, 2012*

**Chem 2**

A popular buffer solution consist of carbonate (CO3 2-) and hydrogen carbonate (HCO3-) conjugate acid-base pair. Which, if any of the following such buffers has the highest buffer capacity? A. 0.9M CO3 2- and 0.1M HCO3- B. 0.1M CO3 2- and 0.9M HCO3- C. 0.5M CO3 2- and 0.5M ...
*March 4, 2012*

**com156**

i need help with my homework part 2:paraphrasing and quoting
*March 3, 2012*

**science**

if Earth's axis were not tilted,could any area have both a hot summer and a cold winter?
*February 27, 2012*

**algebra**

The sum of an uncirculated 'Mint-65 '1950 jefferson nickkle mintedd in Denver is 4/3 the value of a 1945 nickle minted in philadephia in similar condition. Togather the total of two coinsis$35. What is the value of each coin?
*February 23, 2012*

**algebra**

Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
*February 20, 2012*

**Algebra**

(3a-1)(a-4)
*February 20, 2012*

**Math/117 University of Phoenix**

Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
*February 20, 2012*

**math/117**

Could someone look over this paper before I turn it in? Thanks Hint: Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of...
*February 19, 2012*

**MATH**

Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x-3 and ST=2x+6.
*February 12, 2012*

**MATH**

find y if s is the midpoint of segment RT, T is midpoint of segment RU, RS = 6x+5, ST=8x-1, and TU=11y+13.
*February 12, 2012*

**math**

In Exam Figure 7, AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B. Round your answer to two decimal places.
*February 10, 2012*

**CDA**

I need to find 5 children's books that support dev. of gender identity by portraying males and females in diverse roles.
*February 7, 2012*

**Thermodynamics**

Streptomycin, an antibiotic, is produced on a large scale in the United States. The purified solution contains 50 wt% streptomycin water. Preparation of 500 mL intravenous (IV) drip solution bag requires addition of diluent and preservative. The diluent solution is 2 wt% NaCl ...
*January 31, 2012*

**Algebra**

In 1994, the life expectancy of males in a certain country was 63.8 years. In 2001, it was 66.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1994. The linear function e(t) that fits the data is? Use the function to predict ...
*January 29, 2012*

**Geometry**

The endpoints of one diagonal of a rhombus are (0, -8) and (8, -4). If the coordinates of the 3rd vertex are (1, 0), what are the coordinates of the 4th vertex? (7, -12) (7, -8) (-8, -4) (-4, -12)
*January 17, 2012*

**geometry**

The endpoints of one diagonal of a rhombus are (0, -8) and (8, -4). If the coordinates of the 3rd vertex are (1, 0), what are the coordinates of the 4th vertex? (7, -12) (7, -8) (-8, -4) (-4, -12)
*January 17, 2012*

**Economy Today**

Do total profits (A) decrease, (B) increase, or (C) stay the same when new technology reduces average total costs (shifts ATC downward in Figure 26.2 ) in (a) An unregulated natural monopoly? (b) A price-regulated natural monopoly? (c) A profit-regulated natural monopoly?
*January 15, 2012*

**Algebra 1**

Solve by substitution 2x+3y=40.50 3x+y=38.00
*January 13, 2012*

**Mathematical methods**

Following completion of your weekly readings, complete the exercises in the “Projects” section on page 397 of Mathematics in Our World. You should be concise in your reasoning. For Project #1, work only equations (a) and (c), but complete all 6 steps (a-f) as shown ...
*December 13, 2011*

**statistics**

if a 2-tail p value is .56 and the alpha is .05 how do i interpret the results?
*November 27, 2011*

**Finance**

Assume WhirledCom has an issue of 15 year $1000 par value bonds that pay 6% interest, semiannually Futher asssume that today's required rate of return on htese bonds is 9% How much would these bonds be worth today? Round off to the nearest $1
*November 14, 2011*

**nath**

explain how you can add two fractions with denominators of 10 and end up with a sum whose denominator is 5.
*October 25, 2011*

**statistics**

In a poll of voters in a certain city, 32% said that they backed a bill which would limit growth and development in their city. The margin of error was reported as 1.7% with 90% confidence. Determine the bounds for the confidence interval. A. (88.3%, 91.7%) B. (30%, 34%) C. (...
*October 23, 2011*

**7th grade social studies**

„X Nationality - Born in Italy but closely associated with Spain „X Lifespan - 1495 - 1558 „X Career - Franciscan Friar who became a Missionary & Explorer in the New Wordl „X Famous for : Discovering the Pueblo tribe called the Zuni indians. Duped into ...
*October 23, 2011*

**Calculus**

find the critical numbers of the function: h(p)=p-1/p^2+4
*October 17, 2011*

**calculus**

for a given patient it is determined that the blood vessel may rupture if its diameter increases faster than 200 um/s. The blood vessel starts with diameter 4mm and needs to expand to a diameter of 7mm. Is it safe to inflate the balloon at a constant rate of 30 mm^3/s? What ...
*October 17, 2011*

**Calculus**

suppose a balloon used in angioplasty is a 30mm long cylinder, with hemispherical caps at both ends.Determine a relationship between the rate of change in the volume of the balloon and the rate of change of its diameter.
*October 17, 2011*

**math**

If f(x)=x/(14 x + 11), then the domain of f includes all real numbers except
*October 7, 2011*

**math**

How do I solve this problem- how many 2/3 x 3 inch slices can I get out of eight 12 x 6 inch cakes?
*October 5, 2011*

**Algebra II**

prove the following using trigonometric identities: cos 0 (sin 0 + cos 2nd power / sin 0) = cot 2. Keep getting stuck. thanks
*October 2, 2011*

**ETh126**

Describe other measurements sociologists utilize to calculate prejudice.
*September 30, 2011*

**physics**

suppose an airplane, landing on a runway with an initial speed of 45 m/s, slows down at an acceleration rate of -5m/s/s. What will the speed of the airplaine be one second after landing?
*September 14, 2011*

**math word problem**

Melissa collected 3 kinds of leaves when she was out -elm, maple and oak. She has 2 times as many maple leaves as elm leaves and 5 times as many oak as elm leaves. Altogether she has 32 leaves. How many of each kind does she have?
*September 13, 2011*

**Geometry**

A right triangle and a square share a side. The hypotenuse of the triangle measures 10 cm. One base of the triangle measures 4 cm. Neither the known base nor the hypotenuse is the side that is shared with the square. Find the area of the square.
*September 11, 2011*

**Math**

1/2(12n - 8)
*September 8, 2011*

**Algebra**

After three plays in which a football team lost 7 yd,gained 3 yd and lost 1 yd, respectively, the ball was placed on the teams own 30 yd line. Where was the ball before the three plays?
*September 6, 2011*