Questions Asked on
January 5, 2009

chemistry
The element rhenium (Re) has two naturally occurring isotopes, 185Re and 187Re, with an average atomic mass of 186.207 amu. Rhenium is 62.60% 187Re, and the atomic mass of 187Re is 186.956 amu. Calculate the mass of 185Re. am i supposed to multiply the
asked by lyne 
Gr.11 Math
A large company has a phone tree to contact its employees in case of an emergency factory shutdown. Each of the five senior managers calls three eployees, who calls three other employees and so on. If the tree consists of seven levels, how many employees
asked by Nancy 
Math
What did they call the duck who became a test pilot? (no it is not firecracker) (its 13 letters) (the worksheets box thing is sk y s af e il ly be er st qu it i a du ck mb in h er up)
asked by skoolgurl 
chemistry
The compound adrenaline contains 56.79% C, 6.56% H, 28.37% O, and 8.28% N by mass. What is the empirical formula for adrenaline? i worked the problem out and got C8O3N but its not right..what did i do wrong?
asked by lyne 
mathhelp
The person in the word problem wants to run a total of 1000 miles in a year and within a 2 month process she ran a total of 231.05 miles, so now they are asking how many more miles she has to run in the year to reach her goal of 1000 miles. So I think I
asked by dev 
math riddle
what do you call a duck that steals
asked by anonymous 
AP Chemistry
The identity of an unknown solid is to be determined. The compound is one of the seven salts in the following table. Al(NO3)3•9H2O BaCl2•2H2O CaCO3 CuSO4•5H2O NaCl BaSO4 Ni(NO3)2•6H2O Use the results of the following observations or laboratory
asked by some kid 
PSYCHOLOGY
which of the following mothers has the greatest chance of birthing a baby with birth defects due to contracting rubella during pregnancy? A a woman who has the illness during the first month of pregnancy B a woman who contracts the disease during the
asked by tzeni 
Chemistry
A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.0 cm, and a piston is carefully placed on the surface of the compound so that, for all practical purposes, the distance between the
asked by lulu 
algebra
What is the slopeintercept form of an equation for the line that is parallel to 5x3y=1 and passes through (0,4)?
asked by james 
algebra
solve the linear system by using elimination. x1/2y = 11/2 x+4y = 26 i cant ever seem to get an answer that isn't nonterminating.
asked by peter 
Science
Why you feel pressed back into the seat of a car when it accelerates. ps.. its based on Newton's inertia, i think. I don't understand this,and i have no idea what this is about...........NO IDEA............. __ ____
asked by I+6 grade science=i don't understand science 
AP Chemistry
An unknown compound contains only the three elements C,H, and O. A pure sample of the compound is analyzed and found to be 65.60 percent C and 9.44 percent H by mass. a.)Determine the empirical formula of the compound. b.)A solution of 1.570 grams of the
asked by some kid 
math
find the sum of the interior and exterior angles of a polygon of 7 sides. find the measure of the exterior and interior angles of a regular pentagon.
asked by john 
EDU
what practices have you encountered that enhance effective instruction in the clasroom setting
asked by luli 
chemistry
Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. okay i did it and i got just the C right and not the H and O help?
asked by lyne 
Recent History
I don't understand what the big deal was about Y2K. Why would the world stop just because the computers would...I mean we existed all of these years without computers. It would make life more difficult certainly, but it wouldn't entirely end life as we
asked by Ben 
math
Make I the subject of the formula V = IR. a) I = VR b) I = V/R c) I = R/V
asked by Renee 
7th grade (General_
Ok, I really like taking random notes but my teacher hates the fact that I do. She says I need to pick a note style. What style is similar to random but has something.
asked by Abby 
math
how do you write in decimal form, five and fourteen thousandths?
asked by deb 
geometry
what the angle between the tangents at T?
asked by niki 
math
if you toss a coin 3 times what is the probability it will land on heads twice and how do you show it in a tree diagram
asked by kelly 
Math Check over please
A ball is dropped from a height of 3m and bounces on the ground. At the top of each bounce, the ball reaches 60% of it's previous height. Calculate the total distance travelled by the ball when it hits the ground the fifth time. Could you please check over
asked by Mae 
prealgebra
convert the units. Round the result to the nearest tenth. 1 2 years to months 2 168 days to weeks 3 1270 minutes to hours
asked by Lily 
Biology
I need help making a food web for the following: Forestfield ecosystem, Corn,Decomposers, Deer,Fox,Grass,Mouse, Owl,Rabbit, Seedeating bird,Snake, Squirrel,Tree I also need help on another one: Saltwater Marsh Ecosystem, Algae, Crustacean, Decomposers,
asked by Jennifer 
math
Can anyone help, my calculator does not have enough space for simplifying this, sqrt[(16*10^113)/250*10^28]
asked by ABCD 
science
the top of a volcano contains a
asked by Esteven 
math
¬=Square root How is [3*(¬2)+2*(¬3)]^2 expanded?
asked by Anonymous 
EVERYTHING
EVERYONE THANK YOU SO SO SO MUCH I COULDN'T HAVE FINISH MY HOMEWORK EARLYER THAN I USUALY DO. AND AGAIN THANK YOU SO SO SO SO SO SOOOOOOOOO MUCH THANKKKKKKKKKKKKKKKK YOUUUUUUUUUUUUUU
asked by Juanairis 
US history
How did the Supreme Court decisions mentioned (Marbury v. Madison, McCullough vs. Maryland, and Martin v. Hunter's Lessee) strengthen the American republic?
asked by Lauren 
science
what is a cell
asked by danielle 
Science
A polar substance is most soluble in ... ? A nonpolar substance is most soluble in ... ? A generalized statement summarizing the effect of bond polarity on the solbility of a substance in a solvent is ... ?
asked by Virginia 
ALGBERA
Can you help me set it up please?
asked by George 
math
What is a rate and how doI find it?
asked by Madison 
math word problem
Tickets to the jazz concert cost $12.00 for reserved seats and $15.00 for walkins.Of all the walkns 3/4 of them paid in cash. How much money did the theater earn from walkin tickets?How much of that was cash? Jazz concert reserved seats= 185 walkins =47
asked by Carlos 
work problem math
The theater seats 300 people . How many seats were not sold for the musical? What fraction of the total seats available for the musical were sold as walkin tickets? If reserved seats cost $12.50 , how much did the theater make from reserved seats to the
asked by Carlos 
5th GradeFractions
Pedro used 2/3 of a 33 ounce bottle of soap to wash his mother's car. How many ounces of soap did Pedro use?
asked by SG 
chemistry
How do I change the molecular weight(58) of NaCl to grams?
asked by Iedane 
Math
The temperature dropped from 44 degrees farenheit to 56 degrees farenheit in Browning Montana in a 24 hour period. By how many degrees did the temperature change?
asked by Joe 
Algebra
16. I am supposed to multiply the matrices B and C by each other B is: 7 6 2 3 1 8 9 5 and C: 0 8 2 1 Would someone mind showing me how to multiply CB? Thanks ~Saria
asked by Saria 
chemistry
How do I change grams to moles.
asked by Iedane 
DR BOB???
x+3=4x?
asked by MAtt 
collage algebra 1
find the equation of a line with a slpoe of 2 that passes through the point (4,3).
asked by crystal 
math
From the question before, I got to 18+6*SQRT5+6*SQRT5+12 am I on the right track or did I make a mistake somwhere?
asked by Anonymous 
collage algebra 1
solution by the substitution method: 4x + 3y =9 3y + 6 = x
asked by crystal 
chemistry
Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. help please?
asked by lyne 
7th grade
why would some one want to read your paper.
asked by HELP 
algebra1
how do you solve: 7x+4y=4 5x+8y=28 in elmination
asked by baylee 
math
Can you please tell me what you get when you subtract 1000 miles from 231.05 miles. Thanks!
asked by dev 
math
can you tell me is .300 equivalent to .3 ?
asked by dev 
College Lookup?
Can someone teach me how to search colleges like when people say. oh what major is that college good for? I need help finding that. any suggestions on liberal arts colleges?
asked by Taylor 
math(again)
the ? says "a cone has the surface area of 160 sq. in. If the dimensions are reduced by 1/2,what is the surface area of the new cone?" i just cant seem to find the formula for the surface area of the cone.
asked by brianna 
2 math questions
Can anyone help?
asked by dev 
math
can someone check this please find indicated outputs for f(x)= 4x^2  2x f(0)=0 f(1)=6 f(2)=14
asked by deedra 
math
the ? says "find the next 2 terms of the sequence. 1. 3n+1 2. 4n2 How do I figure out what the next terms are?
asked by RJ 
math
800 at 8% for 1 year
asked by De sean 
math
Last question. How do I add 2*SQRT50+7*SQRT2
asked by Anonymous 
Calculus(Derivative of ln)
I get everything, but I can't seem to crack this one out, only one I got problems on.. sqrt[x^2 +1]/x + ln(x + sqrt[x^2 + 1])
asked by Jim 
WHAT DOES THIS QUOTE MEAN??
WORK PAYS LATER. LAZY PAYS NOW.
asked by TOM 
medical transcriber
in medicine when are abbreviations acceptable who should use them and why?
asked by bonnie 
physics
If a plane is diving straight towards the ground at 500 m/s how high up must he pull out of the dive to avoid hitting the ground.
asked by john marsh 
physics
a rope can withstand 300N of force before snapping. assume that a 4 kg object is attached to the rope and is being spun in a horizontal circle with a .5 m radius. Find the velocity of the object when the rope breaks.
asked by john marsh 
physics
a man and a woman are sitting .5m away from each other. the man has a mass of 75 kg and the woman has a mass of 65 kg. what is the attractive force between them due to gravity?
asked by john marsh 
AP Chem
How many mL of 3.84 M HCL are required to consume 4.12g of Zinc in the following reaction? Zn(s) + 2HCL(aq)> ZnCl2(aq) + H2(g)
asked by Bobby 
Business
How can a person distinguish between the prejudicial and nonprejudicial use of rhetorical devices?
asked by Debra 
math
the ? says "find the 10th term of the sequence" 5n+3 Would I do 5(10) +3 and get 53 as the answer? Am I doing this correctly? Thank you for your help.
asked by RJ 
Dialog/Dialogue?
How do you spell dialog(ue) when using it in this context: "Much of the dialog(ue) used in the movie was identical to that of the book"? Or can you use either variation? Thank you in advance
asked by Anonymous 
Human Resources
Can someone tell me what is employee training and employee development?
asked by Chloe 
Trig Identities
a)Express as a function of cos (theta) 2 sin^2(theta)  1 b)Express as a function of sin (theta) or cos (theta) tan^2(theta)  2 sec(theta)sin(theta)
asked by Donovan 
Geography
What is geography's effect on the Industrial Revolution and the current MidEast crisis?
asked by Mary 
SOCIAL STUDIES
wHAT KIND OF PEOPLE LIVED IN THE EAST COAST OF NORTH AMERICA IN THE LATE 1600'S OR EARLY 1700'S?
asked by kAYLA 
Algebra
Do the matrixes of 1 4 3 5 2 0 6 1 multiplyed by 2 0 1 4 3 2 5 1 equal 3/4? Thanks, I just want to confirm that my answer is right (or wrong)
asked by Saria 
math
what is a range?
asked by brianna 
geography (population)
Hello...uh yeah I have this one question i'm not really understanding....this is the question List the 5 largest immigrant populations in Canada and their population. yeah...I don't actually even understand the quesiton!.....like...Immigrant population?
asked by Dawn 
math
how do you graph 0.04 on a grid sheet with counting squares in the hundreths? Would it be the first 4 blocks colored in? _____________________ x_____________________ x_____________________ x____________________ x____________________ _____________________
asked by deb 
Science  gr. 10 physics
How do you find displacement when given a velocity/time graph?
asked by Jake 
central algebra
simplify k squared plus 6k1 all divided by k+5
asked by shaila 
chem
Dr Bob please answer below
asked by lyne 
TRivia
Who said,We may have disagreement, but let some other country step on our tail and see how quickly American unite. It is a Western movie star.
asked by Steven 
Math
is this correct? find domain of the function p(x)=x^22x+2 x is a real number
asked by deedra 
math
Fill up the missing columns in the following. 1.lengthcm,breadthcm,area0.64 m(square)
asked by ritu 
psychology
Regarding the use of anesthetics during childbirth, which of the following statements is true? A They are rarely used these days B The epidural procedure is most often favored C Anesthetics in current use can't cross the placental barrier to affect the
asked by tzeni 
ALGEBRA
Can someone please solve these for me? Thank you. x^2 + 5x + 6 = 0 [SQRT(x + 3)] = 2[SQRT(x)]
asked by SAL 
Math
9/7 x 2/3 = 18/21
asked by deedra 
science
how do you use a microscope?
asked by ana 
english
a special plane stood waiting for the president find the italicized word
asked by yeshua 
math
It is hard to type fractions here, but I will try. My book says I need to "tell why the ratio $0.37 $1.85 ______ and ______ 1 stamp 5 stamps is not a proportion." It looks like a correct proportion to me! Is the problem that there is a 1 as a denominator?
asked by Lee 
quote
what does "you can't keep the birds of sadness from flying into your head, but you can keep them from nesting in your hair" means?
asked by Juanairis 
ALEgBRA 2
Give the domain (that is, possible values of x): 1. y= 2[SQRT(x  1)] 2. y=[SQRT(4  3x)] + 6
asked by Matt 
Social Studies
Who refused to sign the US Constitution and why?
asked by DurreShehwar Ali 
math
What formula is this? (x1+x2/2, y1+y2/2)?
asked by Kyle 
5th grade
Why did many peple come to the Middle Atlantic colonies?
asked by Andy 
chemistry
Is 0.2% is 2/100 or 0.02/100
asked by Lilly 
statistics
hey guys,im sorry if i did any wrong that my question has been deleted,but please help me... hi,care to explain this..its really hard..i only got 2/40 in my exam yesterday,so we have a retest tomorow,and i really need to pass that in order to pass..please
asked by 亚 
Basic Math
Evaluate the following. 4(3)+1 / 22/(2)?
asked by A.W. 
us history
How does Cre'vecoeur's description of an American apply to Byrd?
asked by will 
spelling
Could you give me a couple more synonyms for fun? All I have is enjoyable, amusing, lively, pleasant, entertaining, pleasing,and pleasureable.
asked by Anya 
chem
What mass of iron contains the same number of atoms as 70.05 g of nitrogen?
asked by lyne 
physics
two small objects of masses 'm' & '2m' each are attaached to the ends of a light rigid rod of length 'L' . the rod is pivoted at a point where centre of mass of the two objects lie. the moment of inertia of the arrangement about an axis through the centre
asked by hriday 
math
The width of a rectangle is fixed at 28 cm. What lengths will make the perimeter greater than 70 cm?
asked by deedra 
math
Can someone please check my answers? Thank you! 1. is (8,9) a solution of 2x+4y=12 No 2. Solve using the multiplication principle. 1/2x=9/10 answer: 9/5
asked by deedra 
Math
Solve the inequality: absolute value of x+is greater than or = to1. What form do you put it in? I missed class, and would appreciate someone telling me how to do this problem. Thanks!
asked by Amir 
math
I am having a really hard time with these! 1. Solve system of equations x+3y=7 (1) x=83y (2) 2. find slope (9,8) (10,7) 3. translate into an algebraic expression The product of 46% and some number
asked by deedra 
History
Where did George Rogers Clark march begin and end?
asked by Luther 
SS
Where are the Norwegin Fjords?
asked by Anonymous 
leopard manuel
computer upgrades are great but what's one to do when there is no manuel for teaching the new upgrades? my question: has anyone found an apple manuel (book of info) that has the in(s) and out(s) for leopard X.5.4???
asked by barb 
computer subject
SPECS:construct a flowchart that shall producethe corresponding sales commission amount of each sales income enterd. LEGND: commission table(per month) sales income bracket commission rate above $/100,000 15% $/75,000.01$/1000,000 12% $/50,000.01$/75,000
asked by 亚 
Grade 7 Science
Why are matter cycles essential in an ecosystem?
asked by Peyton 
Math
Solve the inequality: Absolute Value of X+5 is greater than or equal to 1. I'd appreciate someone telling me how to solve it and get the answer. Thank you
asked by Amir 
Chemistry
I have 250 grams of Al2(PO4)3 How many moles of Al are there?
asked by mw 
7th grade
Why are matter cycles essential in an ecosystem?
asked by Peyton 
7th grade
How is a food chain different from a food web?
asked by Peyton 
7th grade
Wolves don't eat plants, but a wolf could not live in an ecoystem that didn't have plants. Please Explain.
asked by Peyton 
O Chem
1. What is the maximum volume (at STP) of the butene mixture that could be obtained by the dehydration of 81 mg of 2butanol? 2. When 2methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has
asked by dora 
7th grade
Can anyone help with some ideas in constructing a food web of the organisms found in a landfill site. Thanks.
asked by Peyton 
Geography
Why have countries in the Pacific South America have developed slowly?
asked by Lily 
English
What does this quote mean? "What I lack in SKILL, I make up for in LAZINESS" Please help.
asked by Adam 
Principles of Business
What are sources of fixed and working capital? Give some examples of each.
asked by Shabida 
Principles Of Business
Explain potential for growth internally and externally.
asked by Shabida 
8th grade honors class (math)
Why did they call the duck who became a test pilot?
asked by honorsclass 
English help!!
After selecting your quote, write a statement explaining your choice. Define your statement and discuss its importance to your life. Your statement must be at least half page in length. Express yourself!! This is my quote: I'm not lazy. I'm energy
asked by Jim 
math
0.5x + 7 less than or equal to 1.3x8 .5xless than or equal to 1.3x15 .8xless than or equal to 15 x less than or equal to18.75 Is this correct?
asked by deedra 
math3rd grade
Darin counted 46 more cars than trucks in a parking lot. There were 29 trucks write an expression that shows how many cars were in the parking lot.
asked by Jalyn 
3rd grade
would you use 1000 as a benchmark to estimate the number of shoes in your classroom?
asked by Sandy 
Accounting
The question is, indicate which of the following accounts normally require an adjusting entry. The accounts are Salaries Payable, Land, Dana Cates  Drawing, Accumulated Depreciation, Unearned Rent and Supplies. The ones that I think require an adjustment
asked by Teresa 
science
why would a car with a large mass might use more fuel than car with a smaller mass. Assume both cars drive the same distance..
asked by Juanairis 
EQUATIONS
9y2 + 16=0
asked by Matt 
7th grade
I created a food chain with three organisms corn,cow,and humans. Can only pleas tell me if I can make a food web out of my chain and what other organisms would i add?
asked by Peyton 
English
Hi, I am doing an !@#$%^&. on transitions. I need some help. Here is what I have. 1. Care for a crispy, juicy grasshopper for breakfast? For example, in many parts of the world, it is considered perfectly acceptable to eat. I added for example. 2. People
asked by Victoria 
Chemistry
What is the weight/volume for a 0.2% solution?
asked by Lane 
chemistry
How to make a 2 Molarity solution?
asked by Da 
math
How could knowing that 35/7=5 help you find 42/7? Explain
asked by Jake 
Science
How can you estimate the time difference between your home and places that are 60 degrees east and west longitude of your home?
asked by Angie 
science
word containing the word rock with ice only
asked by Jonathan 
Chemistry
How to make a 55ml of a 3% solution of NaCl?
asked by Kristy 
math
8 8 ^ 8 8 ^ 8 =64 64 – 7 = 63 63/7 = 9 98 = 1 =1 How can you put this as a negative 1? please help
asked by Julissa12 
fine arts
please can you help me with these two questions. i have tried looking it up on google, but cant get the exact answer. 1. During what period did worshipping of the Virgin Mary begin to grow steadily? a. Gothic b. Romanesque c. Early medieval d. Feudal 2.
asked by y912f 
AED / ASAP PLEASE
Based on the reading in Chapter 3 of the text, what factors do you think most contributed to the Supreme Court's decision in Brown v. Board of Education (1954)? How does this decision continue to impact education today? I say the Civil rights. I say this
asked by troyer0269 
government
what is the structure of the united nation (UN)
asked by lila 
MRS SUE I NEED YOUR HELP
[SQRT(x + 3)] = 2[SQRT(x)]
asked by Matt 
More Acctg
The supplies account had a beginning balance of $1245 and was debited for $2860 for supplies purchased during the year. Journalize the adjusting entry required at the end of the year assuming the amount of supplies on hand is $1349. I added the $2860 for
asked by Teresa 
8th grade math
The radius of circle M is 3 times the radius of circle P. If the area of circle P is abotu 27 sq. cm. the area of circle M is about what? (Use 3 as pie) i don't get it. is the scale ratio 3:1?
asked by brianna 
Chemistry
Sorry, just asking a question on chemistry.
asked by Kristy 
Chemistry
I am making a NaCl solution. What are the steps in calculating and weighing out NaCl for a 4 M solution.
asked by Kyle 
math
blank times blank equals 140 what is the two blanks
asked by Dave 
math
how to solve (x ^21)/(x+1)x ho can I solve to a 1. Please help
asked by Julissa12 
math
unscramble these letter for a 5th grade math question dealing with fractions and decimals. the letters are IPDLISAF
asked by Deborah 
Help!
I was wondering if someone could show me how to post links on this website. It gives me an error when I try to post a link in my reply.
asked by Don