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Bess [88]
3 years ago
7

What is currently the largest disadvantage of hydrogen as an energy source

Biology
2 answers:
IgorC [24]3 years ago
8 0

Answer:Desventajas del hidrógeno como fuente de energía

Una desventaja de producir este hidrógeno como fuente de energía es que su densidad es muy baja, por lo que se requieren tanques más grandes para guardar la misma cantidad de masa. Si lo comparamos, un tanque de hidrógeno necesita más espacio y más peso que uno para almacenar la misma cantidad.

El proceso de extracción se le conoce como electrólisis, que consiste en la descomposición de las moléculas de agua (H2O) en oxígeno e hidrógeno. La desventaja de esto es el elevado precio que esto conlleva pues se necesita mucha energía — no renovable en la mayoría de los casos — para alimentar los electrolizadores.

Explanation:

Vitek1552 [10]3 years ago
4 0
Hydrogen Energy is Expensive
Electrolysis and steam reforming, the two main processes of hydrogen extraction, are extremely expensive. This is the real reason it's not heavily used across the world. Today, hydrogen energy is chiefly used to power most hybrid vehicles.
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Which variable should be changed in an experiment to test the best conditions for bacteria to grow? the type of bacteria used th
Setler [38]

An experiment to test the best conditions for bacteria to grow is the material that the bacteria feed upon. <u>Option D.</u>

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Antibacterial hand soap with different concentrations. Dependent variable bacterial growth as measured by the diameter of the zone of inhibition. Exposing Petri dishes to different temperatures can skew the level of bacterial growth they inhabit. Plant height is the dependent variable that responds to changes in the independent variable.

Sunlight is the controlling variable because each plant is exposed to the same amount of sunlight. It is the dependent variable because it measures the amount of plant growth. The dependent variable depends on the independent variable. How much plants grow depends on how much sun they receive. A continuous increase in temperature from a minimum value increases the rate of bacterial growth because the rate of metabolic reactions increases with increasing temperature.

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7 0
1 year ago
The way in which each of the three major groups of rock forms is different.
sammy [17]
That is true.

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3 0
3 years ago
Read 2 more answers
For each region of the lac operon on the F' plasmid, I+ P+ Oc Z− Y+ , determine whether the region is wild type (that is, it pro
UNO [17]

Answer:

A,B and E

Explanation:

  • I+: I refers to the lac repressor, the + indicates that the repressor is functional
  • P+:  P refers to the promoter region and the + indicates that the promoter is functional
  • Oc:  O refers to the operator region, but the Oc indicates that the operator is constitutive ie. that it is always on/ can't be turned off.
  • Z-: Z refers to the LacZ gene which produces β-galactosidase. Z- indicates that this gene is non-functional
  • Y+:  Y refers to the LacY gene which produces the permease protein. Y+ indicates that this gene is functional

So based on the breakdown above:

  • A is true because P+.
  • B is true because I+.
  • C is not true because the lac operon is an inducible system. The operator needs to be able to be repressed. In this case the operator is constitutive (always on)  which is not the correct form.
  • D is not true because Z-, no β-galactosidase is produced.
  • E is true because Y+.

Only A, B and E apply.

6 0
2 years ago
The basic unit of life is a(n)<br> atom<br> compound<br> molecule<br> cell
Simora [160]

Answer:

cell

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It is the smallest unit of life that can replicate independently. It's the basic structural, functional, and biological unit of all known living organisms. The study of this is called cell biology.

3 0
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