1 / 5

Pg 76 #23

Pg 76 #23. Two unknown compounds are tested. Compound I contains 15.0g of hydrogen and 120.0g of oxygen. Compound II contains contains 2.0g of hydrogen and 32.0g of oxygen. Are they the same compound? H + O = C (I) 15.0g + 120.0g = 135.0g

sandro
Télécharger la présentation

Pg 76 #23

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pg 76 #23 Two unknown compounds are tested. Compound I contains 15.0g of hydrogen and 120.0g of oxygen. Compound II contains contains 2.0g of hydrogen and 32.0g of oxygen. Are they the same compound? H + O = C (I) 15.0g + 120.0g = 135.0g % H = 15.0g x 100 = 11.1 % 135.0g %O = 120.0g x 100 = 88.9% 135.0g

  2. H + O = C (II) 2.0g + 32.0g = 34.0 g % H = 2.0g x 100 = 5.9% 34.0g % O = 32.0g x 100 = 94.1 % 34.0g Are they the same compound?

  3. Pg 76 #24 All you know about 2 unknown compounds is that they have the same percent by mass of carbon. With only this information, can you be sure the two compounds are the same?

  4. Magnesium combines with oxygen to form magnesium oxide. If 10.57g of magnesium reacts completely with 6.96g of oxygen. What is the percent by mass of oxygen in the magnesium oxide? Mg + O = MgO 10.57g + 6.96g = 17.53g %O = 6.96gx 100 = 39.7% 17.53g

More Related