With computer you have a wire you connect the nuclear and the computer together that is how it works in the in the computer there is a stopwatch of 30 minutes
Answer:

Explanation:
Hello there!
In this case, given the by-mass percent of ethanol:

It is possible to compute the density by using its molar mass to find the grams in one liter of solution:

However, by taking the g/mL we obtain:

Which is the density of the solution.
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Answer:
2.107×10²⁴
Explanation:
no of moles=no of particles/Avogadro's number
3.5=X/6.02×10²³
by cross multiplication
3.5×6.02×10²³
=2.107 ×10²⁴
Im sorry but Chapter 2 test chemistry doesnt sound much like a question can you be more specific thanks ik u can be more specififc!