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Verdich [7]
3 years ago
15

6. What quantity can you calculate if you know that a car travels 30 kilometers in 20 minutes?

Biology
2 answers:
Yuliya22 [10]3 years ago
8 0
<span>It's speed - which is 90 Km/h</span>
m_a_m_a [10]3 years ago
6 0
If you're looking for the kilometers per hour, you would do 30/0.33
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The percentage of blood composed of erythrocytes is called __________.
yan [13]

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Explanation: 40-45% of the blood volume is erythrocytes i.e the red blood cell. It contains heamoglobin a special protein that carries oxygen to the lungs.

8 0
3 years ago
What happened to our ozone layer?​
kondaur [170]

Answer:

The ozone layer is still here I believe, it's just slowly going away due to our pollution of the air and such :/

Explanation:

Please vote brainliest!

5 0
3 years ago
What is the energy requirement in kJ/mol to transport a proton across the mitochondrial inner membrane in plant cells at night w
lions [1.4K]

Answer:

C. +23.1 kJ/mol

Explanation:

the formula to use to calculate the energy requirement in kJ/mol to transport a proton across the mitochondrial inner membrane in plant cells is:

ΔGt = RTIn  \frac{C_{2} }{C_1}   + ZFΔV

let's list the values of the data we are being given in the question to make it easier when solving it.

Z= 1

F= 96500C (faraday's constant)

ΔV= 160mV = 0.160V

R= 8.314( constant)

T= 15ºC ( converting our degree Celsius into kelvin, we will have 273.15k+ 15 = 288.15K)

∴ T= 288.15K

Putting it all together in the formula, we have:

ΔGt = 8.314 × 288.15 × 2.303 log \frac{C_{2} }{C_1}  + 1  × 96500 × 0.160

ΔGt = 5517.25   [ -(log(H^{+}_{out} ) + log(H^{+}_{in} )_{in}  +15440

ΔGt  = 5517.25 (pH_{out} - pH_{in}  +15440

Given that the pH  differential gradient  across the membrane is 1.4pH units. It implies that;

ΔGt  = 5517.25 × 1.4 + 15440

=  7724.15 +15440

= 23164.15 Joules/moles

= +23.1 KJ/mole

4 0
4 years ago
two organisms are in the same phylum but not the same class.another pair of organisms are in the same genus. witch pair has more
Katyanochek1 [597]
Same genus is more closely related. The farther down the list Phylum-Class-Order-Family-Genus-Species you go, the more closely related are the species in that taxon.
7 0
3 years ago
Insulin is a what???
vagabundo [1.1K]

Answer:Insulin is a horome that your pancreas make to allow to use glucose

Explanation:

Really just cells ..

But not really just cells

8 0
3 years ago
Read 2 more answers
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