1. Chemistry

I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical

2. CHEMISTRY

I am refreshing on bonding and structure before starting an organic chem class. I am a bit rusty on hybrid orbitals in bonding. Take Methane, CH4, I understand each carbon has an sp3 orbital that overlaps an s orbital on the H to form its 4 bonds. In a

3. chem

Hello, I need help solving this problem on intermolecular dispersion forces. Can you explain how I go about finding the answer? Which member of the following has the stronger intermolecular dispersion forces? a. CO CO2 neither of these b. CH3CH2CH2CH2Br

4. algebra

1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1

5. Chemistry

I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical

6. algebra

1)Use Pascal's triangle to expand (w-x)^5 2)Use the binomial theorem to find the third term in the expression of (n-2p)^6 3)Which is NOT a counterexample to the formula 1^2+3^2+5^2+...+(2n-1)^2=n(2n+1)/3 A.n=3 B.n=2 C.n=1 D.n=4 is it C thanks:)

7. Chemistry

Suppose a piece of lead with a mass of 14.9 g at a temperature of 92.5 C is dropped into an insulated container of water. The mass of water is 165 g and its temperature before adding the lead is 20.0 C. What is the final temperature? I know that I have to

8. time management

As I spend more and more time working, I spend less time with family and friends. However, my career and financial success are important to me. How do I balance the time I spend making money versus time I spend with people? What are some critical questions

9. history

south west asia

10. Algebra. 1

For a snow sculpture content, snow is packed into a cube-shaped box with an edge of 8 feet. The box is frozen and removed, leaving a cube of snow. One cubic foot of snow weighs about 30 pounds. You can estimate the weight ( in pounds) of the cube using the

11. algebra

I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9

12. algebra

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c

13. Math

Ok I have this problem and wanted to know itf its right. If its not please let me know what I did wrong... -8X-12+29x-39+62-3=15x+2 -8x+29x=-37x -12-39+62-3=14 -37x+14=15x+2 -22x+2 22/2 x=1/11??

14. algebra 3

how do i solve square root of 72x to the 3rd power?????

15. Chemistry labs in highschool

I was curious to know whether it was standardized practice to have labs for chemistry classes in highschool. I personally have never had labs for chemistry in highschool. In my state we have the Regents. You may or may not have heard of this test, but the

What are groups of occupations arranged by sector of the economy? I'm doing a cross-word thing, so it starts with "C".

17. math

two 22.5 degree cast iron bend are offset by 3 feet 5 inches, so the diagonal that joins them must have one hub. you need to measure a 10 foot length of 3 inch pipe and cut it for the diagonal. if you measure from the extreme end of the hub, at what

18. social studies

What is the latitude and longitude of Greenwich, England?

19. Critical Thinking

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

20. Algebra II

I don't exactly understand what needs to be done in this problem. Could someone please explain what I am supposed to be doing a bit clearer than the book? Four jobs need to be done, and four workers are available. The chart shows how long each worker takes

21. Algebra1

i think i have to simplify.... but the question just says: (2y-3)^2 possible answers: a.4y^2+9 b.4y^2-6y+9 c.4y^2-12y+9 d.4y^2+12y+9

22. Geometry

I did not get this question at all, if someone could help, I would appreciate it! It says: Reword Theorem 1-3 as two statements, one describing existence and the other describing uniqueness. Theorem 1-3 says: If two lines intersect, then exactly one plane

23. Algebra1

if x-3y=8 and y=2x+1, then x= ???

24. spanish

im not mexican so i don't have a spanish accent. so when im take spanish i don't say it how your suppose to. i say it like english. please help!

25. very simple - my face is red!

What is cheaper: \$40.80 for 250 itmes? OR: \$18 for 100 items? Thank you veyr much!

26. chemistry

A student measures the mass of a book as 12,321g. What is the book's mass in kg?

27. Literature

I am writing report on the novel The Time Machine, by H.G. Wells. I am supposed to write when the story takes place. I have searched through the book and the internet and can't find any hints as to what time frame the young scientist lived in. Please help!

28. math

in the addition problems below each leter represents the same digit in both problems. Replace each letter with a different digi, 1-9, so that both addition problems are true.(there are two possible answers.) A B C A D G +D E F +B E H ------ ------ G H I C

29. history

how did human history begin?

30. Math

I need help with solving this equation and the steps on how to do it? 5X-9-19+22X-38X=-17+17X-9+12

31. algebra/math

i know this is probably a really simple answer and i'm gonna want to hit my head on a wall after i get it, hopefully, but how would i find a unit rate and then simplify it, if possible? like, 3 pages/5 hours? like the directions just say to write as a rate

33. Algebra1

3x/4 - 2x/5 + x/2

34. algebra 2

i need help simplifyng this expression 72a^2*b^3/-24a^2*b^5

35. Math

Is there any difference between an equation with one variable and one equation with two variables?

36. Algebra1

i think i have to simplify.... but the question just says: (2y-3)^2 a.4y^2+9 b.4y^2-6y+9 c.4y^2-12y+9 d.4y^2+12y+9 i got A but i wanna make sure....

37. Maths

A police officer gathered data on the speeds, in kilometres per hour (km/h), of some cars as they drove down hill towards her car. The speed limit is 50 km/h. Analysis of the results showed that the speeds of the cars were normally distributed with a mean

38. Geography

I have an assignment to do comparing Thailand and Australia economically. I don't understand how the GDP, inflation, unemployment and currency rate are linked. For example if inflation is high, what is the expected GDP (low or high). Can someone please

39. Art... complements

Hello, My answer for the following question is #4, is that correct? Thank You When your brain automatically seeks the complements of highly saturated colors, this visual phenomenon is called #1 Simultaneous contrast #2 contrasting complementary color #3

40. ETH

What are the most significant similarities between the Chinese American and Japanese American [cultural] experiences? What are the differences?

41. Writing

Im doing an essay and Im going to write the name of a school. what do i put around it, quotation marks or capitalize it or underline the name?

42. Geometry question

In isosceles ABC, B is the vertex. The measure of angle B can be represented as (8x+2). The measure of angle A can be represented as (9x-2). Find the measure of all three angles of the triangle. Be sure to name the angle with it’s measurement (ex: angle

43. math

insert grouping symbols into 2*3^3+4 to get it to equal 4374

44. Romantic Era

Can anyone point me in the direction of some links about the developements in science during the Romantic Era?

45. word problem

a boy gives his classmates an equal number of candy bars. he tell s his friends that if five fewer kids show up next time, they will get two more candies each. instead, four more kids show up so they get one less candy a piece instead. how many candies

46. math

insert grouping symbols into 2x3^3+4 to get it to equal 4374 and 279,936.... i don't even think its possible!

47. algebra 2

square root of 7 squared + 3...how in the world do i do that if its not a perfect square?

48. math

use grouping symbols to make 2x3^3+4 equal 279936

49. IT

In this assignment, you are going to be gathering information about the future students of NSU at one of our open houses. Since there will be plenty of student candidates with interests on different programs, I would like you to create a database using

50. social studies

Where can I find a map that shows crops grown in Louisiana?

51. history

an ancient greek astonomer and mathematician named_________

52. Algebra1

which of these are equivalent? I. x>-3 II. X-4

53. algebra

x-3*2x+1=8

what is the theme of John Grisham's "the rainmaker"???

55. math

I am getting difficulties by doin this homework.plzzzz can u hel pme;Solve this simultaneous equation;1/3(x+2)-1/4(y-1)=1,5X=4Y(B)SOLVE TO 2 DECIMAL PLACES'x-15/x=12. The second number am not sure of my calcalations;The point (x,y)is transformed by the

56. math/algebra

I have a question of how do I determine the variables when graphing linear equation? For an example graph x+2y=4, how do you come up with the variables as (0,2) (2,1) and (4,0)? The example in my book does not tell me how they came up with this. I know how

57. science

ionisation enegy is higher than second ionisation energy which is heigher than furst ionisation energy.explain

58. English

How do I list quotations? I want to say this: She came down with a host of apologies, among which were, "I'm so sorry for keeping you." "Mr. Nuttel, may I offer you some tea?" And, finally, "I hope Vera has made you feel welcome." Should I separate each

59. Algebra I

Find the slope of any line parallel to the line through points (19,1) and (10,2). I have come up with the slope of that line which should be 1/-9, but beyond that I'm lost.

60. Art ... Light

Hello, Flourescent lighting has a high color temperature... Correct? Thank You

61. social studies

how would you a,s atest aboutusing a map?define the words cardinal direections intermediate directions relative location scale map symbol locator

62. Math

can someone please explain to me how to do place values ant the powers of ten

63. algebra 2

in absolute value i kno that a negative number then turns to positive...but wat if theres a subtraction sign is that included too? Example: (PARENTHESIS ARE THE ABSOLUTE VALUE SIGNS) (2-1) dont be too complicated plz and thank u!!!

WHy is acceleration or delay of payments more useful to an IC than smaller, separate companies?

66. grammar

in the sentence Jack told me. Is me the direct object or the indirect object? I am confused b/c I could say Jack told the secret to me. TIA!

67. Social Studies

What is the key to understanding other societies?

Please check focusing on the grammar area specified in the left column. The Sentence following the grammar area is the sentence in question. 1.Dangling Modidiers - If your baby does not like cold apple juice, it should be heated. My Answer: If your baby

69. Environmental Science

What does DNA stand for, and what does it do?

70. Algebra

5x-6=4x+2 Can someone help me how to solve this problem please?

(p^x)^y

x-3*2x+1=8

73. Critical Thinking

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

74. English

Is this too much of a mouthfull? “Mr. Nuttel, you may wonder why we keep that window open on such a cold October day,” she said, motioning toward a large, French window that opened on to a green, pristinely manicured lawn.

75. math

plz help me to do this am not sure of my answer;th point (x,y)is transformed by the matrix(5 -1) (2 1) to (19 9).find the value of x and y. as answer i got4 and 1.