When conducting an experiment, such as measuring the density of
homogenous solids, why is it important to take several measurement as
opposed to a single measurement? If you were given a table of the
densities of several known substances, Describe in detail the process
that you would use to identify the composition of an unknown
homogenous solid (including the measurements you would need to take
care of the unknown solid)

Regarding your 3 questions: 400340 (this one), and 400353 & 400362.

I wouldn't be able to answer your first two questions, but I am just
posting this comment for your information in case you are waiting for
replies.

You asked for detailed 4 page replies.
The following is taken from the FAQ page:
"The more research required to find an answer, the higher the price
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question not receiving an answer. The more you are willing to pay, the
more likely your question is to get answered quickly."

Your questions look like homework questions to me. Apologies if I am
mistaken about this.
The following is also shown on the FAQ page:
"It is not always possible for G..Answers to tell when a question
posted to the site is a "homework" question. In general, we recommend
that you use G..Answers as a tool to assist you with your homework
rather than as a substitute for you doing your homework yourself.
Please note that we reserve the right to remove questions from the
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In your third question you used the word " G 0 0 g l e".  Any time
this word is used in a question, the question gets "locked" until an
editor has a chance to check it.  I am quessing that this is the
reason why there is a padlock symbol beside your question 400362.

I'm not a Researcher.  This is only my own personal opinion.  Perhaps
you will get answers from someone else.

This and the other questions *reek* "homework" to me....

Regarding your 3 questions: 400340 (this one), and 400353 & 400362.

It's just possible that you need to increase the prices that you have offered.

You can do this by Changing the Question Parameters.

I suggest that you re-price them at $200 each.