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March 29, 2015

Homework Help: Science

Posted by Mary Helpppppp on Wednesday, October 26, 2011 at 11:23am.

Four students each added salt crystals to water and measured the time it took for all the crystals to disolve. The following table shows their results.
A three-column table, with column headers 'Student, 'Temperature (C), 'and 'Time (sec).' For Marcus, the values are '10'and '65,' respectively. For Tyra, the values are '25' and '40,' respectively, For Luis, the values are '50' and '25,' respectively.' For Andrew the values are '75' and '15,' respectively.
Athena repeated the investigation using water heated to 40C. Which is the time MOST LIKELY measured by Athena?
a) 10 sec
b) 20 sec
c) 30 sec
d) 50 sec

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