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  1. Post your attempt please

    Post your attempt please
  2. Answers
    1
    Views
    410

    Post your attempt please

    Post your attempt please
  3. Question: Wavelenght

    by Unknown008
    Answers
    1
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    515

    Post your attempt please

    Post your attempt please
  4. Answers
    1
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    523

    Post your attempt please

    Post your attempt please
  5. Answers
    1
    Views
    912

    Show your attempt please

    Show your attempt please
  6. Answers
    1
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    444

    Show your attempt please

    Show your attempt please
  7. Answers
    4
    Views
    1,008

    Show your workings please.

    Show your workings please.
  8. Show your attempt please.

    Show your attempt please.
  9. Question: Speed

    by Unknown008
    Answers
    1
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    632

    What do you think is the difference between those...

    What do you think is the difference between those two?
  10. Answers
    1
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    716

    Show your attempt please

    Show your attempt please
  11. Answers
    1
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    858

    Post your attempt please.

    Post your attempt please.
  12. Answers
    1
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    2,523

    The nitrogen atom is the central atom. Does that...

    The nitrogen atom is the central atom. Does that help?
  13. Answers
    4
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    1,014

    Yup, that's the way to do it. Of course, any...

    Yup, that's the way to do it.

    Of course, any other variable used is acceptable :)
  14. Answers
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    1,027

    Show your attempt please.

    Show your attempt please.
  15. Question: Probability

    by Unknown008
    Answers
    3
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    283

    The probability of getting the first as a carrot...

    The probability of getting the first as a carrot is given by:

    Number of carrot soup cans / Total number of cans

    The probability of getting the second as a carrot is given by:

    Number of...
  16. Question: Probability

    by Unknown008
    Answers
    3
    Views
    283

    What is your attempt?

    What is your attempt?
  17. Question: Find rate

    by Unknown008
    Answers
    1
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    689

    Show your attempt please.

    Show your attempt please.
  18. Answers
    3
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    550

    Let the 4 numbers be variables. For example,...

    Let the 4 numbers be variables.

    For example, let the first number be x.

    The second number would be x+d
    The next would by x+2d
    And the next, x+3d

    Their sum is 20...
    x + (x+d) + (x+2d) +...
  19. Answers
    3
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    680

    I would prefer if you change the way you...

    I would prefer if you change the way you attempted it a bit and retry.

    Let x be the number of nickels and y be the number of dimes.

    The net value of the nickels is 0.05x and the net value of...
  20. Answers
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    1,861

    To get the current, you need to use the formula:...

    To get the current, you need to use the formula:

    I = \frac{Q}{t}

    Q is the charge flowing. You have 5.7x10^16 doubly positively charged ions, and 6.5x10^16 singly negatively charged ions. Find...
  21. The way the speed was given is a bit weird... but...

    The way the speed was given is a bit weird... but that doesn't change the fact that:

    Speed = Distance / Time

    Rearranging gives you:

    Time = Distance / Speed

    This should be easy enough to...
  22. For a function f(x) = \frac{x-1}{1+x}, f(a) will...

    For a function f(x) = \frac{x-1}{1+x}, f(a) will be f(a) = \frac{(a) - 1}{1+(a)} = \frac{a-1}{1+a}

    Similarly, f(2a+b^2-c) will be f(a) = \frac{(2a+b^2-c) - 1}{1+(2a+b^2-c)} =...
  23. Answers
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    1,013

    Right :)

    Right :)
  24. Answers
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    1,013

    Ah, no, not quite right. Half life has a...

    Ah, no, not quite right.

    Half life has a special behaviour. Say something has a half life of 10 minutes and there is initially 128 kg of that thing.

    After 10 min, there would be 128/2 = 64 kg...
  25. Question: Algebra

    by Unknown008
    Answers
    1
    Views
    749

    What is your attempt?

    What is your attempt?
  26. Answers
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    989

    You can find 50 animals/plant you know of and...

    You can find 50 animals/plant you know of and Google their binomial nomenclature. Plus I'm sure you can get a lot of the species for dogs and cats alone what you get you well above 50 examples.
  27. Answers
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    749

    Do you understand how to use the z-table (normal...

    Do you understand how to use the z-table (normal distribution table)? If you don't, then it's near to impossible for you to solve the first question. And without the answer to the first question, the...
  28. Answers
    1
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    273

    Post your attempt please.

    Post your attempt please.
  29. Answers
    1
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    483

    What are your thoughts about the answer?

    What are your thoughts about the answer?
  30. Question: Chemistry Help

    by Unknown008
    Answers
    1
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    1,293

    You guessed right! You will have 0.1 g of iodine...

    You guessed right! You will have 0.1 g of iodine in water and 0.9 g of it in kerosene.

    And you work the same way with the next extraction. Could you try it out?
  31. Answers
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    585

    Is it normal that your title is different than...

    Is it normal that your title is different than your post content? :confused:
  32. Answers
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    1,583

    You are being asked for the value of P, not the...

    You are being asked for the value of P, not the value of I. But the thing is, you don't have I either.

    What you need to find is a sum, P, which when added to an interest I will give $300.

    And...
  33. Answers
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    481

    What is the meaning of heterogeneous? If you know...

    What is the meaning of heterogeneous? If you know this, you should be able to answer this question.
  34. Question: Physics

    by Unknown008
    Answers
    1
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    669

    Show your attempt.

    Show your attempt.
  35. Question: Chemistry

    by Unknown008
    Answers
    1
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    433

    What would make you think they are less or more...

    What would make you think they are less or more stable than group 1 compounds?
  36. This is something that all the textbooks I came...

    This is something that all the textbooks I came across mentioned. Take your book, give it a read and attempt an answer of your own.
  37. Answers
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    1,074

    What is your attempt?

    What is your attempt?
  38. m1 is the initial molarity. v1 in the initial...

    m1 is the initial molarity.
    v1 in the initial volume.
    m2 is the final molarity.
    v2 is the final volume.

    What you need to find in each case is the molarity.

    For the first test tube, you have...
  39. Answers
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    1,406

    To get the y intercept, put x = 0. This is the...

    To get the y intercept, put x = 0. This is the equation of the y-axis, hence the intercept.

    To get the x intercept, put y = 0. This is the equation of the x-axis, hence the intercept.
  40. Answers
    4
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    658

    If you're being given such a question as...

    If you're being given such a question as homework, it means that you should be able to do it and that it's only practice. Review your notes, your books, there should be examples. Apply the same...
  41. Answers
    4
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    658

    This is not a complete question. And you...

    This is not a complete question.

    And you haven't shown your attempt.
  42. Don't you have the data sheet where there are a...

    Don't you have the data sheet where there are a lot of redox reactions mentioned and listed according to their EV values?

    Anyway, you lack the water molecules here.

    MnO_4\ ^- \ +\ 8H^+\ +\ ...
  43. Answers
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    637

    There is not enough information and post your...

    There is not enough information and post your attempt please.
  44. Answers
    3
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    3,288

    Right, that was a typo from me :o

    Right, that was a typo from me :o
  45. Answers
    3
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    3,288

    Your equations aren't what you were supposed to...

    Your equations aren't what you were supposed to get...

    Take the first sentence only:
    2x + 3y = $2.90

    Taking the second sentence:
    x + 2y = $1.80

    Can you try this now?
  46. Answers
    2
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    1,411

    Show your attempt please.

    Show your attempt please.
  47. Answers
    1
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    1,201

    g(-4) means the value of the function (what you...

    g(-4) means the value of the function (what you usually call y, e.g. y = 3x + 1, y is the function) when x = -4.

    You have a set of coordinates from which you can find the answer. Simply find -4,...
  48. Answers
    2
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    1,593

    Post your attempt. Please show all calculations.

    Post your attempt. Please show all calculations.
  49. Question: Physics

    by Unknown008
    Answers
    1
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    976

    I don't quit understand what you were trying to...

    I don't quit understand what you were trying to do.

    In v = u + at,
    v = final velocity,
    u = initial velocity,
    a = acceleration,
    t = time.

    From what you tried, you are saying that at t = -10...
  50. Answers
    1
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    717

    What is your attempt?

    What is your attempt?
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