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mihalych1998 [28]
2 years ago
14

Explain why most enzymes perform poorly at low temperatures​

Biology
1 answer:
algol132 years ago
4 0

Answer:

Due to Kinetic energy

Explanation:

At low temperatures enzymes are simply inactive. As temperature is increased the enzymes and substrate gain kinetic energy

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How many grams of solute are needed to make 250 mL of a 2.055 M NaCl solution?
Veronika [31]

Answer:

30grams

Explanation:

To calculate the mass (number of grams of the solute) in the solution, we need to calculate the number of moles it contains first. We use the formula;

M = n÷ V

Where; M= Molarity or Molar concentration = 2.055M

n= number of moles= ?

V= Volume = 250mL

Volume in L is 250/1000 = 0.250L

n= M × V

n= 2.055 × 0.250

n= 0.51375moles

The mass is calculated using :

Mole (n) = mass (m) / molar mass (MM)

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mass = molar mass × mole

Mass = 58.5 × 0.51375

Mass = 30.0543

Therefore, the mass is 30grams

7 0
3 years ago
1, based on what you know about blood, why would having a sickle cell anemia crisis result in a reduced red blood cell count, an
Alex73 [517]

1. Having a sickle cell anemia crisis is a severe condition of reduced red blood cell count.
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8 0
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Airida [17]
Community, habitat is in general and ecosystem is the whole place, not just the soil.
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Answer:

You can put whatever u want on it

Explanation:

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A scientist wishes to learn about volcanoes and earthquakes. Which of the following spheres should she most directly study?
Vera_Pavlovna [14]
The answer is D.geosphere(rock)

hope this helps
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