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borishaifa [10]
3 years ago
14

What is below the Ecosystem .

Chemistry
1 answer:
Zigmanuir [339]3 years ago
8 0
Below the ecosystem is soil, granted, and bedrock. however for the ocean ecosystem has sand below it.
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What would be the mass of 9.03*10^21 molecules of hydrobromic acid
Fynjy0 [20]

Answer:

2.11 g hydrobromic acid (correct to 3SF)

Explanation:

Molecular formula of hydrobromic acid = C2H5BrO2

mass of C2H5BrO2 = 140.96g

Beginning with what we're given, 9.03*10^21 we then make a conversion by using Avegadro's number which is 6.02*10^23 per mole (Oct. 23 at 6:02 am is national mole day :) Then, we need to convert out of moles, 140.96g hydrombromic acid per mole.

It looks like this:

9.03*10^21 molecules • (1 mol C2H5BrO2 / 6.02*10^23 molecules) • (140g C2H5BrO2 / 1 mol) = 2.1144 g C2H5BrO2

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How many moles of NaOH are in 13.25 mL of 0.323 M NaOH?
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As the moon orbits the ______________, its gravitational pull is______________ on the side of the earth closest to the _________
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