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Alina [70]
3 years ago
5

A little aluminum boat (mass of 14.50

Chemistry
1 answer:
Valentin [98]3 years ago
5 0
When the volume is 450 cm3 so the boat will displace 450 g.

so we have  450 g - 14.5g = 435.5 left 

so to get how many pennies can be added to the boat before it sinks can be determined by:

divided the mass for the one penny:

no.of Penny = 435.5 / 2.5g

                     = 174.2 

∴ the boat will float with 174 pennies and will start to sink with 175 

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Explanation:

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Natasha_Volkova [10]

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Let's take aluminium as an example I'll work through:

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4 0
3 years ago
How are protons and neutrons found?
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Explanation:

-----

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Answer:

22:

Formular:

atomic \: mass =  \frac{ \sum(isotopic \: mass \times \%abundance)}{100}  \\

substitute:

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23:

<em>Same</em><em> </em><em>element</em><em> </em><em>is</em><em> </em><em>represented</em><em> </em><em>by</em><em> </em><em>same</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>protons</em><em>.</em><em> </em>

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