Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Math & Sciences (https://www.askmehelpdesk.com/forumdisplay.php?f=402)
-   -   Steps for solving (https://www.askmehelpdesk.com/showthread.php?t=136802)

  • Oct 3, 2007, 05:38 PM
    kenny-g
    Steps for solving
    Sucrose has a denisty of 1.58g/ml. What is the mass of 87.5 ml of sucrose
  • Oct 3, 2007, 05:38 PM
    kenny-g
    8.5
  • Oct 3, 2007, 10:23 PM
    KISS
    The units have to be right. If you have (B g/ml) and (C g), arrange the ratios such that the units cancel. In this case: (B g/ml) * ( 1/(C g)). The units of the answer would be in units of grams.

    Conversions of length can be done the same way:
    Suppose 2.54 cm = 1"; 12" = 1' and you were asked "What is the number of feet in 30 cm"?

    You know you have 30'
    You multiply 30' x 12"/1' and I have the result in inches because units cancel.
    You then take (30' x 12"/1') and multiply by 2.54 cm/1" and I get the result in cm.
    feet * inches/feet * cm/inches = cm

  • All times are GMT -7. The time now is 03:03 AM.