the accepted value for the percent by mass of water in a hydrate is 36.0%. in a laboratory activity, a student determined the percent by mass of water in the hydrate to be 37.8%. what is the percent error for the student’s measured value?

What is the leading cause if water scarcity throughout much of the world

Aggregation is the process of all of your data. a. gathering b. analyzing c. collecting d. observing

Apopulation of deer mice was introduced into a desert ecosystem. being dark-colored, the deer mice stood out in the sand and were easy prey for predators. over a few years, the color of the mice changed from dark brown to light brown. what role does natural selection play in this example? a. the change of color camouflaged them, which them hunt better. b. the change of color enabled them to regulate their body temperature. c. the change of color allowed them to hide better from predators. d. the change of color made their bodies tolerant to the harsh desert sand. e. the change of color allowed them to deflect the excessive heat.