Determine the mass of carbon monoxide that is produced when 45.6 g of methane CH4 react with 73.2 g of oxygen gas, O2. The products are CO and H2O. Please check my work: CH4 + 3O2 ---> 2CO + 2H20 nCH4=2.84 mol nO2=4.58 mol Limiting Reactant: 1 mol CH4/2.84

2. chemistry

calculate number of atoms in 4.67 mol of Ca(NO3)2 I got: 2.81 X 10^24 C atoms or should it be 28.11 x 10^23 C atoms? 5.62 X 10^24 N atoms or should it be 9.34 x 10^23 N atoms? 1.69 x 10^25 O atoms....but are you allowed to do ^25 or should it be 168.7 X

the vertices of triangle DEF are D(5,12)and E(2,7) and F(8,4) Triangle DEF undergoes an enlargement with the centre ,O, and scale factors k.Its image is D`E`F` where D(5,12)arrow D`(7.5,18) a)How do i detremine the value of k

4. geography

hi guys , anyone having trouble finding info about broughton airbus. i know people have asked before but i can`t find the answers to my questions. the question i`m finding hard is what alterations have been made to the factory? thanks for helping me . ive

5. Electric Field between concentric cylinders

I wanted the electric field between concentric cylinders, and got anexpression using Gauss' Law that considers only charge enclosed. Thus, there was no influence due to the outer cylinder. But, if we consider the limiting case of the inner cylinder having

6. math

the position vectors of A and B relative to the origin are a and b repsectively The point P is on OA such that PA=2PA So my question is if B is the top of the triangle and O represent the left corner of the triangle and A the right corner, where would

7. Economcis

I need some help on the following question, thanks. e = euros Suppose quotes for the dollar-euro exchange rate, E\$/e, are as follows: in New York \$1.50 per euro, and in Tokyo \$1.55 per euro. Describe how investors use arbitrage to take advantage of the

8. Physics

Calculate the change in momentum in each of the following situations and state the direction of the change in momentum. a) A 4kg bowling ball strikes a stationary pin head-on at a speed of 3m/s. It continues to move in its original direction, but its speed

9. geography

hi guys , anyone having trouble finding info about broughton airbus. i know people have asked before but i can`t find the answers to my questions. the question i`m finding hard is what alterations have been made to the factory? thanks for helping me . ive

10. Pre-Algebra

Hi, Well, I have a test tomorrow and I was hoping that's someone could maybe help me? I don't understand probability... Here's a question I don't understand: Find the probability of tossing three coins and getting only two tails. Can anyone help?

11. math

how do i solve the equation for x and y y+4x=27 xy+x=40

12. math

On a vacation in cananda steve used his credit card to buy a camera for Can \$250.00 trinirose: What is the value of the camera in Ja \$. a)I know the asnwer is \$18,125 Ja dollars b)steve has a credit limit of Ja \$30,000.00.After buying the camera,how many

13. chemistry - empirical formula

write the empirical formula for each of the following molecular formulae" a)P4O10 b)C2H6 Confused as to what the diff.is b/w empirical and formula...have no idea how to answer these b/c they look like empirical formulas to me

14. psy info - help

Ms. Sue, Could you tell me where I can get this information: Sternberg, eight general types of love. Thanks.

15. Econ

What kinds of information would you have needed to try to determine whether a company is a monopoly and why is this information important?

16. math (vectors)

calculate the length of AN if a{6} {2} and b= {1} {2} Is it 6^2+4^2 36+16=52 square root of 52+7.211

17. history

Who is roberto clemente?

Hi, please check my work: In an experiment, 23.4 g of FES are added to excess oxygen and 16.5 g of FE2O3 are produced. The balanced equation is: 4FeS = 7O2 --> 2Fe2O3 + 2SO2 Calculate the % yield. My Answer: nFeS=23.4g/87.92 g/mol =0.266 mol 4mol FeS /

19. Math

Ok, I'm lost on this.... The equation D=1.2 gives the distance, D in miles that a person can see to the horizon from a height h in feet. Solve this equation for h

20. History

What did people drink during the Renaissance? Did they drink water?

Is there any flowers that rhymes with journal??????

22. Algebra

Solving quardratic equations using factoring. 2X^2+2X-4=0 The book says the answer is -2,1. I got the -2,1 but not in the order of -2,1. I used FOIL to solve. When I use -2,1 I don't can not solve. When I use 1,-2. I can solve. I am not clear.

23. written communication

Ironing out all wrinkles, the pants looked much more presentable

24. science

why is the electron the part of the atom that moves when an electric current flows?

25. health

what range of health care benefits are covered by Medicare and Medicaid?

26. Social Studies

Whos is Nelson Mandela? FW de Klerk? How did they impact apartheid?

27. geography

do you know which sites tell you about what happens to the parts when they go to the toulouse airbus factory? thanks Ms.Sue for you help i appreciate it.

Hi, please check my work: In an experiment, 23.4 g of FES are added to excess oxygen and 16.5 g of FE2O3 are produced. The balanced equation is: 4FeS = 7O2 --> 2Fe2O3 + 2SO2 Calculate the % yield. My Answer: nFeS=23.4g/87.92 g/mol =0.266 mol 4mol FeS /

29. Math

What would be considered as a competitive interest rate and was is a compeititve interest rate?

x2-13x+30

31. public policy development

I need to write a sentence outline showing how an agency creates goals and objectives.

32. CRITICAL THINKING

Why and how could you apply critical thinking when evaluating each of the following: • Articles • Advertising • Media • Conversations

33. MAT 116

solve 59X-81>3x+215

34. maths

x and y are two matrices x= {-2 0} and y {4 -1} {5 1} {3 7} evaluate x^2+y is the ans={8 -1} {18 8}

35. education inequalities

What are some inequalities in education between men and women?

36. religion

Why did martin luther king responde the way he did to poeple

37. chemistry

We're studying acids and bases; the question states that 50mL of 0.1M HNO3 solution is mixed with 25mL of 0.1M NaOH. What is the pH? I thought that I would use the Henderson-Hasselbach equation; but my answer does not match the one give in the solution.

38. french

The use of the pronouns y and en is confusing, i know y is used for a place, but also with certain verbs followed by "a": pense a...for example. How do i know i don't use other direct or indirect object pronouns. Same for "en", when do i use it and when do

39. calculus

Find lim (with x¨‡ under it) (x^2-1)/x or state that the limit does not exist. I'm so lost with what to do with limits...I tried to simplify the expression to lim x+lim -1/x, but from there I'm pretty dumbfounded. If anybody could help me out I'd

40. M116

59x - 81 > 3x + 215

41. Biology

How are the lungs and the liver in a frog different from those of a human? Thanks (other than being smaller)

42. AED

can anyone help me with my introduction to the fallowing please: Many teachers leave the profession after their first year as an educator. Examine programs that encourage individuals to stay in the profession of teaching and lower the attrition rate.How

Thanks if anybody can help me!! I need some words that rhymes with journal. Thanks!!!!!!!!!!!1

44. french

CAn someone proof read this? Nous sommes allées au Musée des Tissus et des Arts Décoratifs à onze heures. L’adresse a été 34, rue de la Charité, Lyon, France 69002. Nous avons vu des textiles du dix-huitième siècle et il y avait des tableaux par

45. algebra

I am having a hard time solving my problem 2ã20 + 5 ã 80 - 7 ã5 Can someone please help me

46. science

Provide at least three freshwater and three ocean water resource challenges

47. mathematics: algebra;equations

wuts the answer for -12 + 5u= -48

48. algebra

I am having a hard time solving my problem 2ã20 + 5 ã 80 - 7 ã5 Can someone please help me

49. history

When was the statue of zeus at olympia made? How was it made?

50. history

How whas the statue of zues made? i cant find it on google or anything. i also prefere to not use wikipedia.

51. health care

health care benefits covered by Medicare and Medicaid?

52. Algebra

The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7

53. Economics

How do you do the portfolio worth part 2?

54. History

What was the type of currency during the renaissance?

55. Talent Shows

In class I have to do a talent show. If I learn karate from my friend do YOU think that is okay for a talent show?

56. medical

What does ROS stand for?

57. medical

A physical or mechanical device used to remove health hazards form the workplace is called a _______ control.