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marin [14]
3 years ago
5

Una masa de hidrógeno gaseoso ocupa un volumen de 230 litros en un tanque a una presión de 1.5 atmósferasy a una temperatura de

35° C. Calcular, a) ¿Cuántos moles de hidrógeno se tienen?, b) ¿A qué masa equivale elnúmero de moles contenidos en el tanque?
Biology
1 answer:
vekshin13 years ago
6 0

Answer: A

Explanation:

Just did it on edg

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Match the descriptions to the processes.
UNO [17]

Answer:

A) Ice cream starts dripping down the sides of an ice cream cone: melting

B) Fog is created by using dry ice:  sublimation

C) Frost forms on trees on a very cold day: deposition

D) The mirror gets fogged up when you breathe on it: condensation

E) Your wet hair dries after a few minutes: evaporation

F) Liquid glass cools and hardens : freezing

Explanation:

Sublimation process where solid state changes to gaseous state by escaping liquid state.

Deposition process where gaseous state changes to solid state by escaping liquid state.

Condensation process where gaseous state changes to liquid state.

Melting is the process where solid state changes to liquid state.

Evaporation process is a process where liquid state changes to gaseous state.

Freezing is the process in which liquid changes to solid state.

3 0
3 years ago
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A worm breaks down the remains of dead organisms and releases the nutrients in soil. this helps plants grow what is the role of
ludmilkaskok [199]
The worm is the decomposer. Decomposers break down dead matter and gives room for new life to thrive.
5 0
3 years ago
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How does phase contrast microscopy help scientists to visualize difficult specimens?
Oksanka [162]
The phase contrast microscope uses out-of-phase and in-phase light rays that produce contrast areas allowing scientists to detect even a minute number of protein molecules and focus on the minute internal structures of a particle.  
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4 0
3 years ago
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Macrophages express multiple types of receptors on their surface that stimulate phagocytosis of microbes, leading to pathogen in
Vinil7 [7]

Answer:

C. Mannose receptor

Explanation:

They are soluble receptors used by macrophages to aid phagocytosis. They are not associated with the phagocyte membrane and thus helps the macrophages to act on cells without getting in contact with the membrane

6 0
3 years ago
Which lanes sample produced the fewest fragments of DNA?
aliina [53]

Lane A.

The smallest fragments of DNA will be witnessed near the bottom of the gel, on the other hand, the heavier fragments will be visible at the top. The theory behind this is there is a specific pore size on the basis of the concentration of acrylamide/agarose in the gel.


5 0
3 years ago
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