Recent content by iconwin

  1. I

    Exponential Problem: Finding Exponents in a Tricky Equation

    Thank you all!
  2. I

    Exponential Problem: Finding Exponents in a Tricky Equation

    hihihi. Yes, he you're right! However, I thought, if they don't give us the answer,they will at least give us the value of either n or m, or the ratio b/t these two variables in order to solve the equation. Thanks for your comment, Mark. You have a nice day!
  3. I

    Exponential Problem: Finding Exponents in a Tricky Equation

    Oh, I found the answer! It's (d). I just have to try to substitute each choice into the equation to find the right answer. ^^Thanks a lot.
  4. I

    Exponential Problem: Finding Exponents in a Tricky Equation

    [SIZE="3"]Can anyone help me with this problem? Homework Statement Supposed A=BnCm, where A has dimensions LT, B has dimensions L2T-1, and C has dimensions LT2. Then the exponents n and m have the values: a. 2/3; 1/3 b. 2; 3 c. 4/5; 3/5 d. 1/5; 3/5 Homework Equations N/A...
  5. I

    What is the Correct Volume of the Reaction Mixture at STP After Completion?

    Thank you! I'll try again!
  6. I

    What is the Correct Volume of the Reaction Mixture at STP After Completion?

    Homework Statement Consider the following gas phase reaction: http://scholar.uh.edu/webct/RelativeResourceManager/Template/Imported_Resources/20053H_CHEM1331_08946_QIZ_200511041405291131475017966%20folder/QIZ_6442871_M/my_files/test_images/f5g1q49g1.gif 400. mL of NO at STP is reacted with...
  7. I

    Chemistry Help with finding molecular formula at a specific P, V, T

    Hi, I found the right answer: N2O4. Here is my works: 1. I found the mass of each gas in the compound using the given % by mass. mass of N= .304*5.25= 1.596g N mass of O= 5.25 - 1.596= 3.654g O 2. Mass-Mole conversion: 1.596g N* 1mol of N/ 14.01g of N = 0.1139 mol N 3.654g O* 1mol of O/ 16g of...
  8. I

    Chemistry Help with finding molecular formula at a specific P, V, T

    Homework Statement A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25 g sample of the gas occupies a volume of 1.00 L and and exerts a pressure of 1.26 atm at -4.0C. Which of the following is its molecular formula? Variables: 30.4% Nitrogen 69.6% Oxygen M(sample)= 5.25g P=...
  9. I

    How to Solve Vector Problems in Rotated Coordinate Systems

    ;)) Thanks a lot, LowlyPion for your helpfulness and kindness.
  10. I

    How to Solve Vector Problems in Rotated Coordinate Systems

    So, I have the result: Ax'= 8cos37x'-hat= (6.4x'-hat) Ay'= -8sin37y'-hat = -4.8y'-hat Bx'= 6cos37x'-hat= 4.8x'-hat By'= 6sin37y'-hat = 3.6y'-hat Is it right?
  11. I

    How to Solve Vector Problems in Rotated Coordinate Systems

    Aha ;)) Great thank to you! I'll try it now.
  12. I

    How to Solve Vector Problems in Rotated Coordinate Systems

    I found the answer for the first part of the problem to be 10 units. But I have no clue how to deal with the second part :) Please give some hints how to solve this following prob. Homework Statement Two vector A and B, are drawn on an x-y coordinate system as shown. Vector A has a...
  13. I

    Calculate 0.98M CaCl2 to 0.23M Cl- Solution (mL)

    Really!? Thanks. By the way. I think I post this in the wrong section. If you can, please move this post to the proper section. I will read the regulations and follow them the next times.
  14. I

    Calculate 0.98M CaCl2 to 0.23M Cl- Solution (mL)

    This is how i worked it out: CaCl2 + 2H2O => Ca(OH)2 + 2HCl Mol of Cl: 341mL * (1L/1000mL) * 0.23 mol/L= 0.078 mol of Cl Vol. of CaCl2: 0.078 mol Cl * (1mol CaCl2/2mol Cl) * (1L/0.98 mol CaCl2) * (1000mL/1L) = 40.0 mL CaCl2 I TRIED HARD ON THIS... IS THIS THE RIGHT ANNSWER!
  15. I

    Calculate 0.98M CaCl2 to 0.23M Cl- Solution (mL)

    If I understand the problem correctly, I should find how many mol of chloride ions is produced by one mol of calcium chloride first. DO you think that is right?