calcium sulfate is known to form hydrates (ionic compounds with water that have well-defined ratios of the ionic formula unit to molecules of water, written caso4⋅nh2o). the water content of the hydrate can be determined by gravimetric analysis. how many molecules of water are present for every formula unit of caso4 in an unknown calcium sulfate hydrate if a complete drying of a sample to anhydrous caso4 caused its mass to decrease from 8.609g to 6.807g?

How did loftus interpret false memories? a. because of their desire to whoever is asking them about their memories people will often go along with what they want to hear b. eyewitness memories becomes faulty when we make errors in identifying the source of information we have stored in long term memory c. we accept subsequent misinformation as being correct, and this information becomes part of our memory for the original event d. when we retrieve a memory for a particular event from long-term memory, we also retrieve information from other sources relevant to the event

How are brightness and size related when it comes to stars

Which source would provide the most bias-free information about smoking and increased health risks? a) a website created by heart disease patients b) a research study conducted by the mayo clinic eliminate c) a public service message sponsored by tobacco companies d) an online question forum conducted by attorneys for cardiac specialists