Wednesday
September 2, 2015

Posts by debbie


Total # Posts: 552

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

Managerial Finance
Compare the performance of East Coast Yachts to the industry as a whole. For each, comment on why it might be viewed as positive or negative relative to the industry. Suppose you create an inventory ratio calculated as inventory divided by current liabilities. How would you ...
September 1, 2011

Finance
Colgate-Palmolive Company has just paid an annual dividend of $0.85. Analysts are predicting a 10% per year growth rate in earnings over the next five years. After that, Colgate’s earnings are expected to grow at the current industry average of 4.7% per year. If Colgate&#...
July 30, 2011

education
how are such difference between urban and rural communities with adolescentsocialization declining overtime and why
July 23, 2011

statistics
78% of us homes have a telephone. In a random sample 250 homes, what is the probablity that fewer than 50 do not have telephone
July 23, 2011

Chem
The formula is C3H6Br2. If the compounds is called 1,2-dibromopropane, A, B and C must be...this is question 20, from which there was no answer to this question. Need to know the answer,please.
July 20, 2011

Chem
we can most accurately say of aluminum that it..
July 20, 2011

ETH/125
I am trouble with my second assignment for week 7. I just can not understand exactly what I should be researching?
June 25, 2011

chemistry
how much heat is needed to bring 90.0 grams of aluminum from 25 to 75 degrees celcius?
June 16, 2011

persuasive essay
Thank you for all of your help on this essay. I will make all the corrections this time. Does this essay sound more persuasive this time?
June 12, 2011

persuasive essay
Why Americans should not count on Social Security for retirement. Even though Social Security may always have enough funds to support itself, Americans need another form of retirement funding in addition to Social Security. Americans cannot live on Social Security alone. With ...
June 12, 2011

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