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irina1246 [14]
3 years ago
5

A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example

Chemistry
2 answers:
11Alexandr11 [23.1K]3 years ago
4 0

Answer:

Homologous structure

Explanation:

Homologous structures come from same ancestors but have different functions.

tekilochka [14]3 years ago
4 0

Answer:

Use the drop-down menus to complete the sentences.

Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a  

✔ vestigial structure

.

A harbour seal’s flipper and a human hand have a very similar structure, but function differently. This is an example of a  

✔ homologous structure

.

Explanation:

this what is right on edge2020. Hope it helps

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Two litres of an ideal gas at a pressure of 10 atm expands isothermally into a vacuum until its total volume is 10 litres. How m
nlexa [21]

Answer:

The work done and heat absorbed are both -8,1 kJ

Explanation:

The work done in an isobaric process is defined as:

W = -P (Vf - Vi)

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Vi = 2 L

Thus, <em>W = -80 atm×L ≡ -8,1 kJ</em>

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4 0
3 years ago
Methane burns in the presence of oxygen to form carbon dioxide and water.
wlad13 [49]

Answer:

= 9.28 g CO₂

Explanation:

First write a balanced equation:

CH₄ + 2O₂ -> 2H₂O + CO₂

Convert the information to moles

7.50g CH₄ = 0.46875 mol CH₄

13.5g O₂ = 0.421875 mol O₂

Theoretical molar ratio CH₄:O₂ -> 1:2

Actual ratio is  0.46875 : 0.421875 ≈ 1:1

If all CH₄ is used up, there would need to be more O₂

So O₂ is the limiting reactant and we use this in our equation

Use molar ratio to find moles of CO₂

0.421875 mol O₂ * 1 mol CO₂/2 mol O₂=0.2109375 mol CO₂

Then convert to grams

0.2109375 mol CO₂ = 9.28114 g CO₂

round to 3 sig figs

= 9.28 g CO₂

5 0
3 years ago
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