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  1. Let 1:y be the mole ratio of X to oxygen in the oxide [ (16*y) / (16*y + 74.9) ] x 100% = 24.3% 16y = 3.888 + 18.2007 y = 1.38 ( corr. to 3sig. fig.) 1 : 1.38 ~ 2 : 3 the mole ratio of X to oxygen in the oxide is 2:3

  2. Please see calculation below: 圖片參考:http://img215.imageshack.us/img215/9964/differentiation.png 2010-01-27 01:05:07 補充: http://img215.imageshack.us/img215/9964/differentiation.png

  3. Please see calculation below: 圖片參考:http://img709.imageshack.us/img709/4773/eventsf.png 2010-01-25 23:25:04 補充: http://img709.imageshack.us/img709/4773/eventsf.png

  4. ...訂價、硬盒式機身設計 Designed specifically to handle time-value-of-money calculations such as annuities, mortgages, leases, savings, and...

  5. ... on which type of question you face. In doing geometric calculation , usually you are NOT required to state the reason in each step...

  6. ...the VALUE, that all created value should be included in the calculation of GDP. (a) You should answer NO. Issuance of ...

  7. 1. If you are not afraid of complicated calculations and you are a meticulous person, accounting is not difficult. 2...

  8. u can actually demonstrate the calculation in front of ur teachers ' btw do u have serious /medium or slight ,not so serious depression?

  9. ... than chem, jus remember points then it's ok, and chem = calculation and thinking, so it should be harder but because you have higher...

  10. ...and J Chow , a very good book for you to read and study. If calculation of mole and electricity are required, buy a calculation book also ...