Monday
December 22, 2014

Posts by connie


Total # Posts: 226

Math
(93.789 - 5.40) x 18.057 = answer should be in proper # of SF My answer is 1596.040173 But my choices are A)1596,B)1600,C)1596.239,D)1590,E)1596.2 So would the answer be 1590 because of the 3 SF Thank You!
October 10, 2011

Math
What is the sequence of conversion factors for units if you change from ft/sec. to km/hour? Is it ft/sec x sec/min x min/hour x ft/m x km/m?
October 10, 2011

chemistry
The density of sample measurements taken by a tech are: 0.810g/mL, 1.375g/mL, 2.046g/mL. The Actual density is 1.027g/mL. Are these measurements by the tech. precise accurate or neither or both Is the correct answer: Neither??? Thanks,
October 10, 2011

chemistry
I got it I take 18 and multiple by 5.172=93.1 g
October 2, 2011

chemistry
Mg3N2 +6H2O- 3Mg(OH)2 + 2NH3-- How many grams of H2O are needed to produce 150g of Mg(OH)2? I thought I had this but.....the correct answer should be 93 grams Where did I go wrong?? 1) Change 150 g Mg(OH)2 into moles by dividing by molar mass from periodic table. 150 / (24 + ...
October 2, 2011

Chemistry
187.55g/moles
October 1, 2011

Chemistry
I got it myself: Yeah! 63.55 + (14.01 + 48)x 2 = 187.55g/moles
October 1, 2011

Chemistry
the molar mass of CopperII Nitrate CU(NO3)2 is _________grams Ok so I 1. Cu= 63.55 2. N=14.01 3. 0= 6 X 16.00=96 I get 96.+14.01+63.55? =173.56 Answer is 188 grams? What did I do wrong? Thank You
October 1, 2011

Chemistry
To convert the number of moles of H20 to moles of NH3? 1. H=2(1.008)= 2.01 2. 0=1(16.0) = 16.0 Total = 18.01 =# of moles of H20???? then what do I do Am I doing it right so far? thank you!
October 1, 2011

chemistry
How many grams of MgO are produced when 40.0grams of 02 react with Mg? 2mg+O2--->2mgO Could you please set the problem up? I think the answer is 101, but I do not know how to get that answer. Thank you
October 1, 2011

Chem
How many grams of N2 are produced when 125g of NH3 reacts by the following? 4NH3+6NO--->5N2 +6H20 I know the answer but I do not know how to do the problem. The answer in the book is 257g But what do I do? I am not even sure where to start? Thanks
October 1, 2011

Chemistry
Plot data, preform interpolations or extrapolations, determine slope of best line, determine y intercept. Write equation of the line. T in Kelvins40.0 70.0 100.0 120.0 0 V in ml 250.0 430.0 610.0 730.0 0 Value of V at T= 50.0? Value of T when V= 800.0? 1.So, I made a graph ...
September 25, 2011

chemistry
What are the joules needed to melt 50.0g of ice at 0 degree C and to warm the liquid to 65.0 degree C? Thank you so much!
September 11, 2011

Chem >Jai
Posted by Connie on Saturday, September 10, 2011 at 10:36am. What is the amount of energy of calories to heat 8.5g of water from 15 C to 36 C? I think you take 8.5g x 21 degree C, but then I am stuck. Thank you Chem - Jai, Saturday, September 10, 2011 at 10:50am amount of ...
September 10, 2011

Chemistry
What are the joules needed to melt 50.0g of ice at 0 degree C and to warm the liquid to 65.0 degree C? Thank YOu
September 10, 2011

Chem
Energy needed to keep a 75w bulb burning for 1 hour = 270kj Calculate energy neede to keep it burning for 3 hours? In J and kcal? I got the J: It is 270kj x 1000/1 x 3/1 = 810000=8.1 x 10^5J But How Do I get the kcal? Thank you
September 10, 2011

Chem
What is the amount of energy of calories to heat 8.5g of water from 15 C to 36 C? I think you take 8.5g x 21 degree C, but then I am stuck. Thank you
September 10, 2011

Chemistry
What is the mass of 36.0mL of a liquid if its density is 2.70g/mL? is the right answer 97.2 g?
August 30, 2011

Chemistry
The average adult has about 9.0 pints of blood. If 20 drops of blood is = to 1 mL. How many drops of blood does the average human contain? Is the answer 85,1400 drops or 85,000 drops or neither? Thanks!
August 30, 2011

Chemistry
Caffeine is 49.47% carbon, 5.19% H, 28.8%N and 16.48% O. What is mass of carbon in 37.1g of caffeine?
August 30, 2011

Math
(1.0900 x 10to the 4th) X (2.098X 10 to the 14th) divided by (7.45x 10 to the negative 6th power)
August 30, 2011

math
[7-(-8)]|-6|=
May 11, 2011

chemistry
a patient receives 250 mL of a 4.0% (m/v) amino acid solution twice a day. a) how many grams of amino acids are in 250mL of solution? b) how many grams of amino acids does the patient receive in one day? For a) I came up w/10g and for b) I came up w/ 20g in 1 day. Is this ...
May 4, 2011

chemistry
calculate the volume(ml) of a 0.215M KOH solution that will completely neutralize each of the following? a) 2.50ml of a 0.825M H2SO4 solution b) 18.5ml of a 0.560 M HNO3 solution c) 5.00mL of a 3.18 M H2SO4 solution
April 28, 2011

Anthropology
why do you think that members of a professional academic association(American Anthropological Association) decided to issue an official statement about race? [hint: what is politically relevant about the beginning and growth of anthropology as a discipline?]
April 27, 2011

Chemistry
How do you work the problem 1:10 dilution of 75mL of 2.5M H2SO4
April 15, 2011

chemistry
Just wanted to say thank you to DrBob for responding back even if he wasn't able to answer the question posted on Thur. 4/14/2011. If there is anyone else who can answer I'd appreciate it.
April 15, 2011

chemistry
Its 5:23pm Ive just checked to see if I've gotten a response,looks like mine has been skipped over. I see questions that were asked after mine and the one right before mine. I never got an answer. What's up?!
April 14, 2011

chemistry
I don't know how to explain or if Ive got my homework answer correct. The question is: A patient on dialysis has a high level of urea, a high level of sodium and a low level of potassium in the blood. Why is the dialyzing solution prepared with a high level of potassium ...
April 14, 2011

chemistry
How many grams are in 2.25 mole of NaBr?
April 3, 2011

chemistry
A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP? Did not understand previous answer given!
March 24, 2011

chemistry
A sample of Nitrogen(N2)& Helium has a volume of 250mL @ 30degrees celsius & a total pressure of 745 mmHg a)If the pressure is 32mmHg what is the partial pressure of the Nitrogen? b) What is the volume of the Nitrogen at STP?
March 24, 2011

chemistry
Gasahol is a fuel containing ethanol(C2H6O) that burns in oxygen (O2)to give carbon dioxide and water. a)How many moles of O2 are needed to completely react with 4.0 moles of C2H60? b) If a car produces 88g of CO2,how many grams of O2 are used up in the reaction? c)If you add ...
March 17, 2011

chemistry
If a car produces 88g of CO2, how many grams of O2 are used up in the reaction?
March 17, 2011

physics
thank you!
October 22, 2010

physics
A dart is thrown horizontally with an initial speed of 6 m/s toward point P, the bull's-eye on a dart board. It hits at point Q on the rim, vertically below P, 0.29 s later. Neglect air resistance. (a) What is the distance PQ? (b) How far away from the dart board is the ...
October 22, 2010

US History
What actions did FDR chose to mobilize the nation for war? What new social and economic choices did American face as the nation became the “arsenal for democracy? What new opportunities and old constraints did woman and minorities encounter on the home front and in their ...
October 18, 2010

History
US government not sure what civil liberties?
October 18, 2010

History
Assess the validity of this statement, “One of the ironies of World War I was that in a war to make the world safe for democracy, government attacked the civil liberties that make democracy possible."
October 18, 2010

History
One of the ironies of World War I was that in a war to make the world safe for democracy, government attacked the civil liberties that make democracy possible.
October 18, 2010

FZN
Your school has contracted with a professional magician to perform. The school has guaranteed an attendance of at least 1000 people and total tickets sales of at least $4400. The tickets are $4 for students and $6 for non students, of which the magician receives $2.50 and $4....
October 14, 2010

spanish 1
paso - You would use the 'yo' form to say "During the day, I spend time with my friends."
October 11, 2010

Physics
Thank you!
October 8, 2010

Physics
An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous acceleration 4.20 s into the flight?
October 8, 2010

Physics
A bag of sand dropped by a would-be assassin from the roof of a building just misses Tough Tony, a gangster 2-m tall. The missile traverses the height of Tough Tony in 0.22 s, landing with a thud at his feet. How high was the building? Ignore friction.
October 6, 2010

French
how do you unscramble these French words? pest seuclsars
September 23, 2010

accounting
I am trying to get the words together I have written some but have writers block i understand if you can't help. thanks for asking
July 27, 2010

accounting
Write a 700-word paper answering Question 2 in Ch. 24. Explain the need for full disclosure in financial reporting. Identify possible consequences of failing to properly disclose certain items in financial statements.
July 27, 2010

algebra
Soybean meal is 18% protein: corn meal is 9% proten. How many pounds of each sould be mixed together in order to get 360-pounds of mixture that is 14% protein? Soybean meal_______, Corn meal_______.
July 8, 2010

accounting
__a__ 1. A responsibility center that incurs costs (and expenses) and generates revenues is classified as a(n) a. cost center. b. revenue center. c. profit center. d. investment center. _a___ 2. The most useful measure for evaluating a manager's performance in controlling ...
June 29, 2010

math
select at least 5 more Pythagorean Triples. Show why your 5 sets of Pythagorean Triples work in the Pythagorean Theorem formula. 5,12,13
May 18, 2010

college algebra
6x+7y=53 8y-9y= -21 write two equations that have your two intergers as a solution.Addition and subtraction methods
May 7, 2010

college algebra
write two equations that have your two intergers as a solution. 5x-y=10 X + 6y=18 addition and subtraction methods
May 6, 2010

5th grade
solve 3 gal 3 qt = _____ qt
April 19, 2010

6 th grade math
2 students are learning how to bake apple and blueberry pies. The first student makes an apple pie and the second student bakes a blueberry pie. If the first student eats 1/4 of the apple pie and the second student eats 1/2 of the blueberry pie, which expression represents how...
March 24, 2010

Chemistry
The titration of a 50.0 mL solution of the monoprotic bromoacetic acid (pKa = 3) takes 10 ml of 0.01 mol L-1 NaOH to reach the stoichiometric point. What was the initial concentration of bromoacetic acid? A) 0.02 mol/L B) 0.01 mol/L C) 0.002 mol/L D) 0.001 mol/L
March 12, 2010

chemistry
20.92 %
February 27, 2010

? on Chemistry
Ok I did look back and it makes more sense...but I am confused about this problem. I initially did select that [NO2] increases as well as [N2] and [O2]....I selected that the rxn absorbs energy since it stated that dH= +66.4. I'm not sure which of these is incorrect then??
February 19, 2010

? on Chemistry
I understand that's what happens....but I thought that it means there is an overall increase in the product since it is higher than what I started with. However my webassign says it doesn't increase in concentration....so then is it considered to decrease? Here is my ...
February 19, 2010

? on Chemistry
If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an endothermic ...
February 19, 2010

Cemistry
If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an endothermic ...
February 19, 2010

biology 102
This is all stuff that can be easily researched within a few minutes...try doing that on google or something rather than have someone else do your homework for you.
February 19, 2010

Bus/210
• Write a 200- to 300-word description of a business scenario, either real or fictional, that depicts each of the following forms of business organization: • o Joint-stock company o Limited liability company o Partnership o Sole proprietorship
January 28, 2010

HCA 220
You are an allied health professional working with an endocrinologist. You have been working with the patient and need to update the doctor on the reason for the patient’s visit. Begin describing the patient’s concerns.
January 20, 2010

soc101
of the differents forms of social structure described by durkhiem, tonnies and lenski which comes closest to matching your social setting
December 9, 2009

Math
One card is selected at random from an ordinary set of 52 cards. Find the probability of each of the following events: b. A spade and a 5 are drawn. d. A jack is not drawn.

November 30, 2009

biology
why do plants produce far more sugar than they need? why do they not stop photosynthesis once immedaite needs are met?
October 11, 2009

math
You need to choose between two phone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B charges a monthly fee of $13 with a charge of 6 cents per local call. How many local phone calls in a month make Plan A the better deal?
October 5, 2009

math
A truck can be rented from basic rental for $50 a day. in addition you have to pay .20 cents per mile. Cont. truck charges $20 per day in addition to 50 cents per mile. How many miles must you drive in a day to make the rental cost for basic a better deal than Cont.?
October 5, 2009

Finance
I need help with number 7 on the worksheet for Ziggler case study
September 29, 2009

survey of mathematics
Awer
September 5, 2009

geography
A PORTION OF THE OCEAN THAT'S ENCLOSED OR PARTLY ENCLOSED BY LAND
September 2, 2009

business
In a physicians office performing billing if the guidelines haven't been followed accurately in completing claim form what happens if not corrected?
August 5, 2009

critical thinking
WHAT BACKGROUND INFORMATION CAN YOU HAVE ABOUT CLAIMS
July 27, 2009

math
Posted by connie on Monday, July 20, 2009 at 11:56pm. Find the indicated outputs for f(x) = 2x²-4x f(0)= ____? f(-1) =____? f(2) =____? Responses math - Reiny, Tuesday, July 21, 2009 at 8:00am f(0) = 2(0)^2 - 4(0) = 0*0 = 0 f(-1) = 2(-1)^2 - 4(-1) = 2(1) + 4 = 2 + 4 = 6 ...
July 21, 2009

math
Reiny I'm still lost i only got so far. f(2)=2(2)^2-4(2) =2(2) from their on i'm lost please help
July 20, 2009

math
Find the indicated outputs for f(x) = 2x²-4x f(0)= ____? f(-1) =____? f(2) =____?
July 20, 2009

science
Should we eliminate fats from our diets altogether and increase proteins? What are some of the benefits that unsaturated fats and proteins provide when included in a balanced diet?
July 1, 2009

Biology
How are scientists able to piece together the process of protein synthesis and the effects of genetic controls without direct observation?
May 14, 2009

science-lifecycles
Thank you very much.
April 18, 2009

science-lifecycles
what is a suitable simple website about lifecycle of a cicada ?
April 18, 2009

kindergarten
in the word grandmother there are at least 3 syllabbles inthe word grandmother try clapping it out if your not sure
March 27, 2009

Math
Good Job! Thanks for the help!
March 7, 2009

Math
That sounds correct so this is what I got! F.O.I.L. = First, Outer, Inner, Last. (4x+6)^2 = (4x+6) (4x+6) First 4x*4x = 16x^2 Outer 4x*6 = 24x Inner 6*4x = 24x 24x+24x = 48x Last 6*6 = 36 16x^2 + 48x + 36
March 7, 2009

Math
Multiply (4x + 6) ^2
March 7, 2009

social justice and ethics
Discuss current trends affecting social welfare. Do modern trends favor the solution of social issues? What are the most effective social welfare organizations today, in your opinion, and why?
March 5, 2009

Biology
5' C U A C C U C A G A U U C G C C U A C C U 3' a.What is the DNA sequence that encodes for the word for this protein? Be sure to note the 5' and 3' ends. I would appreciate the help! Thanks!
February 20, 2009

Biology
5' C U A C C U C A G A U U C G C C U A C C U 3' a.What is the DNA sequence that encodes for the word for this protein? Be sure to note the 5' and 3' ends.
February 20, 2009

algebra
Cycle Paths, Inc. makes bicycles, tricycles, and unicycles. Last week they made 88 more bicycles than unicycles, and 5 times as many tricycles as unicycles. If they made 40 more bicycles than tricycles, how many unicycles did they make.
September 30, 2008

compehenison
derek is going to washing, d.c.,with
August 25, 2008

rational equation
(-2/x-1)=(x-8/x+6) please help i'm having a hard time doing this by steps
April 30, 2008

math
(-2)/(x-1)=(x-8)/(x+6)
April 29, 2008

MATH
two circles whose equations are (x-3)^2+(y-5)^2=25 and (x-7)^2+(y-5)^2=9 intersect in two points. What is the equation of the line passing through these two points? Can anyone please give me some ideas how to do it without graphing it out? THANKS A LOT!
April 25, 2008

math-repost
I still don't get it
April 22, 2008

math-repost
Which equation has the complex number 4-3i as a root? (1) x^2+6x-25=0 (2) x^2-6x+25=0 (3) x^2+8x-25=0 (4) x^2-8x+25=0 I have no clue how to do it!!!PLEASE HELP!!!Please guide by step by step!!THANKS A LOT~!!!!
April 22, 2008

math
Are you answering me my question????
April 22, 2008

math
Which equation has the complex number 4-3i as a root? (1) x^2+6x-25=0 (2) x^2-6x+25=0 (3) x^2+8x-25=0 (4) x^2-8x+25=0 I have no clue how to do it!!!PLEASE HELP!!!Please guide by step by step!!THANKS A LOT~!!!!
April 22, 2008

algebra
92 decreased by 4%
April 8, 2008

algebra
350 increased by 7%
April 8, 2008

algebra
In your industrial oven, you bake two cooking sheets with 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies. If the price of the scones are $2.28 each and the cookies are $1.19 each, how much total revenue would result ...
April 3, 2008

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