# Questions Asked onJanuary 5, 2009

1. ## 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

2. ## 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

3. ## 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)

4. ## 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?

5. ## math-help

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

6. ## math riddle

what do you call a duck that steals

7. ## 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

8. ## 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

9. ## 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

10. ## algebra

What is the slope-intercept form of an equation for the line that is parallel to 5x-3y=1 and passes through (0,-4)?

11. ## algebra

solve the linear system by using elimination. x-1/2y = 11/2 -x+4y = 26 i cant ever seem to get an answer that isn't nonterminating.

12. ## 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............. __ ____

13. ## 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

14. ## 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.

15. ## EDU

what practices have you encountered that enhance effective instruction in the clasroom setting

16. ## 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?

17. ## 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

18. ## math

Make I the subject of the formula V = IR. a) I = VR b) I = V/R c) I = R/V

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.

20. ## math

how do you write in decimal form, five and fourteen thousandths?

21. ## geometry

what the angle between the tangents at T?

22. ## 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

23. ## 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

24. ## pre-algebra

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

25. ## Biology

I need help making a food web for the following: Forest-field ecosystem, Corn,Decomposers, Deer,Fox,Grass,Mouse, Owl,Rabbit, Seed-eating bird,Snake, Squirrel,Tree I also need help on another one: Saltwater Marsh Ecosystem, Algae, Crustacean, Decomposers,

26. ## math

Can anyone help, my calculator does not have enough space for simplifying this, sqrt[(16*10^113)/250*10^-28]

27. ## science

the top of a volcano contains a

28. ## math

¬=Square root How is [3*(¬2)+2*(¬3)]^2 expanded?

29. ## 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

30. ## 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?

31. ## science

what is a cell

32. ## Science

A polar substance is most soluble in ... ? A non-polar substance is most soluble in ... ? A generalized statement summarizing the effect of bond polarity on the solbility of a substance in a solvent is ... ?

33. ## ALGBERA

Can you help me set it up please?

34. ## math

What is a rate and how doI find it?

35. ## math word problem

Tickets to the jazz concert cost \$12.00 for reserved seats and \$15.00 for walkins.Of all the walk-ns 3/4 of them paid in cash. How much money did the theater earn from walk-in tickets?How much of that was cash? Jazz concert reserved seats= 185 walk-ins =47

36. ## 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 walk-in tickets? If reserved seats cost \$12.50 , how much did the theater make from reserved seats to the

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?

38. ## chemistry

How do I change the molecular weight(58) of NaCl to grams?

39. ## 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?

40. ## 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

41. ## chemistry

How do I change grams to moles.

x+3=4x?

43. ## collage algebra 1

find the equation of a line with a slpoe of -2 that passes through the point (4,3).

44. ## 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?

45. ## collage algebra 1

solution by the substitution method: 4x + 3y =9 3y + 6 = x

46. ## chemistry

Calculate the number of C, H, and O atoms in 4.50 g of glucose (C6H12O6), a sugar. help please?

48. ## algebra1

how do you solve: 7x+4y=-4 5x+8y=28 in elmination

49. ## math

Can you please tell me what you get when you subtract 1000 miles from 231.05 miles. Thanks!

50. ## math

can you tell me is .300 equivalent to .3 ?

51. ## 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?

52. ## 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.

53. ## 2 math questions

Can anyone help?

54. ## math

can someone check this please find indicated outputs for f(x)= 4x^2 - 2x f(0)=0 f(-1)=6 f(2)=14

55. ## math

the ? says "find the next 2 terms of the sequence. 1. 3n+1 2. 4n-2 How do I figure out what the next terms are?

56. ## math

800 at 8% for 1 year

57. ## math

Last question. How do I add 2*SQRT50+7*SQRT2

58. ## 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])

59. ## WHAT DOES THIS QUOTE MEAN??

WORK PAYS LATER. LAZY PAYS NOW.

60. ## medical transcriber

in medicine when are abbreviations acceptable who should use them and why?

61. ## 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.

62. ## 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.

63. ## 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?

64. ## 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)

How can a person distinguish between the prejudicial and nonprejudicial use of rhetorical devices?

66. ## 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.

67. ## 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

68. ## Human Resources

Can someone tell me what is employee training and employee development?

69. ## 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)

70. ## Geography

What is geography's effect on the Industrial Revolution and the current Mid-East crisis?

71. ## SOCIAL STUDIES

wHAT KIND OF PEOPLE LIVED IN THE EAST COAST OF NORTH AMERICA IN THE LATE 1600'S OR EARLY 1700'S?

72. ## 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)

73. ## math

what is a range?

74. ## 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?

75. ## 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____________________ _____________________

76. ## Science - gr. 10 physics

How do you find displacement when given a velocity/time graph?

77. ## central algebra

simplify k squared plus 6k-1 all divided by k+5

79. ## 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.

80. ## Math

is this correct? find domain of the function p(x)=x^2-2x+2 x is a real number

81. ## math

Fill up the missing columns in the following. 1.length----cm,breadth----cm,-----area0.64 m(square)

82. ## 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

83. ## ALGEBRA

Can someone please solve these for me? Thank you. x^2 + 5x + 6 = 0 [SQRT(x + 3)] = 2[SQRT(x)]

84. ## Math

-9/7 x 2/3 = -18/21

85. ## science

how do you use a microscope?

86. ## english

a special plane stood waiting for the president find the italicized word

87. ## 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?

88. ## 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?

89. ## ALEgBRA 2

Give the domain (that is, possible values of x): 1. y= 2[SQRT(x - 1)] 2. y=-[SQRT(4 - 3x)] + 6

90. ## Social Studies

Who refused to sign the US Constitution and why?

91. ## math

What formula is this? (x1+x2/2, y1+y2/2)?

Why did many peple come to the Middle Atlantic colonies?

93. ## chemistry

Is 0.2% is 2/100 or 0.02/100

94. ## 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

95. ## Basic Math

Evaluate the following. 4-(-3)+1 / 2-2/(-2)?

96. ## us history

How does Cre'vecoeur's description of an American apply to Byrd?

97. ## spelling

Could you give me a couple more synonyms for fun? All I have is enjoyable, amusing, lively, pleasant, entertaining, pleasing,and pleasureable.

98. ## chem

What mass of iron contains the same number of atoms as 70.05 g of nitrogen?

99. ## 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

100. ## math

The width of a rectangle is fixed at 28 cm. What lengths will make the perimeter greater than 70 cm?

101. ## 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

102. ## 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!

103. ## math

I am having a really hard time with these! 1. Solve system of equations x+3y=7 (1) x=8-3y (2) 2. find slope (9,8) (10,-7) 3. translate into an algebraic expression The product of 46% and some number

104. ## History

Where did George Rogers Clark march begin and end?

105. ## SS

Where are the Norwegin Fjords?

106. ## 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???

107. ## 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

Why are matter cycles essential in an ecosystem?

109. ## 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

110. ## Chemistry

I have 250 grams of Al2(PO4)3 How many moles of Al are there?

Why are matter cycles essential in an ecosystem?

How is a food chain different from a food web?

Wolves don't eat plants, but a wolf could not live in an ecoystem that didn't have plants. Please Explain.

114. ## 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 2-butanol? 2. When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has

Can anyone help with some ideas in constructing a food web of the organisms found in a landfill site. Thanks.

116. ## Geography

Why have countries in the Pacific South America have developed slowly?

117. ## English

What does this quote mean? "What I lack in SKILL, I make up for in LAZINESS" Please help.

What are sources of fixed and working capital? Give some examples of each.

Explain potential for growth internally and externally.

120. ## 8th grade honors class (math)

Why did they call the duck who became a test pilot?

121. ## 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

122. ## math

0.5x + 7 less than or equal to 1.3x-8 .5xless than or equal to 1.3x-15 -.8xless than or equal to -15 x less than or equal to-18.75 Is this correct?

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.

would you use 1000 as a benchmark to estimate the number of shoes in your classroom?

125. ## 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

126. ## 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..

127. ## EQUATIONS

9y2 + 16=0

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?

129. ## 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

130. ## Chemistry

What is the weight/volume for a 0.2% solution?

131. ## chemistry

How to make a 2 Molarity solution?

133. ## Science

How can you estimate the time difference between your home and places that are 60 degrees east and west longitude of your home?

134. ## science

word containing the word rock with ice only

135. ## Chemistry

How to make a 55ml of a 3% solution of NaCl?

136. ## math

8 8 ^ 8 8 ^ 8 =64 64 – 7 = 63 63/7 = 9 9-8 = 1 =1 How can you put this as a negative -1? please help

137. ## 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.

138. ## 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

139. ## government

what is the structure of the united nation (UN)

140. ## MRS SUE I NEED YOUR HELP

[SQRT(x + 3)] = 2[SQRT(x)]

141. ## 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

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?

143. ## Chemistry

Sorry, just asking a question on chemistry.

144. ## Chemistry

I am making a NaCl solution. What are the steps in calculating and weighing out NaCl for a 4 M solution.

145. ## math

blank times blank equals 140 what is the two blanks