## Search found 18 matches

August 6th, 2015, 1:09 pm
Forum: 2015 Question Marathons
Topic: Forensics C
Replies: 38
Views: 7739

### Re: Forensics C

Light travels from air into a glass fragment with an angle of incidence of 42 degrees. The angle of refraction at the end of the fragment is 18 degrees.
Calculate the index of refraction of the glass. Round to the nearest hundredth.
August 6th, 2015, 12:53 pm
Forum: 2015 Question Marathons
Topic: Forensics C
Replies: 38
Views: 7739

### Re: Forensics C

samlan16 wrote:Suppose that you are given a powder which burns red in a standard propane flame. What is the cation in that compound?
`Li +`
August 6th, 2015, 12:31 pm
Forum: 2015 Invitationals, Regionals, and States
Topic: Texas 2015
Replies: 137
Views: 32212

### Re: Texas 2015

Is CyFalls open to Division B this year? Also, has anyone here succeeded in accessing the school's scioly website?
September 15th, 2014, 8:55 pm
Forum: 2015 Question Marathons
Topic: Fossils B/C
Replies: 289
Views: 49216

### Re: Fossils B/C

Correct
September 13th, 2014, 2:45 pm
Forum: 2015 Question Marathons
Topic: Fossils B/C
Replies: 289
Views: 49216

### Re: Fossils B/C

What major event led to the extinction of most graptolites?
September 13th, 2014, 1:21 pm
Forum: 2015 Question Marathons
Topic: Fossils B/C
Replies: 289
Views: 49216

### Re: Fossils B/C

`Devonian Period`
September 12th, 2014, 8:55 pm
Forum: 2015 Question Marathons
Topic: Fossils B/C
Replies: 289
Views: 49216

### Re: Fossils B/C

Genus?
September 10th, 2014, 8:41 pm
Forum: 2015 Question Marathons
Topic: Fossils B/C
Replies: 289
Views: 49216

### Re: Fossils B/C

`{gryphaea, aka"devil's toenail"}`