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nikklg [1K]
3 years ago
9

A scientist finds a fossil that contains a long beak. He can assume which of the following things?

Chemistry
1 answer:
Lyrx [107]3 years ago
8 0
So lets look at the uses of a beak. what can a beak be used for? in today's animal kingdom beaked animals usually need to use that hard tool to dig into the ground, roots, and trees to find food. so the answer would be t<span>he animal most likely ate worms that lived under ground</span>
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We want to determine the mass of copper (II) bicarbonate produced when a reaction produces 2.95 moles of copper (II) bicarbonate.

To do so, we can use the initial value and convert it to grams using the molar mass.

Find the molar mass of copper (II) bicarbonate by summing the molar mass of each individual atom:

\displaystyle \begin{aligned} \text{MM}_\text{Cu(HCO$_3$)$_2$} &= (63.55 + 2(1.01)+2(12.01)+6(16.00))\text{ g/mol} \\ \\  &=185.59\text{ g/mol} \end{aligned}

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\displaystyle 2.95\text{ mol Cu(HCO$_3$)$_2$}\cdot \frac{185.59 \text{ g Cu(HCO$_3$)$_2$}}{1 \text{ mol Cu(HCO$_3$)$_2$}} \Rightarrow 547 \text{ g Cu(HCO$_3$)$_2$ }

In conclusion, about 547 grams of copper (II) bicarbonate is produced.

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