Answer:
About 1.254 moles
Explanation:
The first step is to find the molar mass of selenium. If you take a look at a periodic table, you will find that there is a little number underneath that says something around 78.96 g/mol. Dividing 99 grams by this number, you get about 1.254 moles of Se. Hope this helps!
Liquid!
Liquid matter is made of more loosely packed particles.
Answer:
the conservation of mass means matter can be created or destroyed, it only changes forms
Explanation:
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Answer:
You will be watching for 6 hours
Explanation:
We will have 45 x 8 which will give us 360 then we divide it by 60 which will give us 6.
