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aleksklad [387]
3 years ago
13

A) In terms of electrolysis, it’s been said from multiple sources online that “Using water's density and relative atomic populat

ions, it is estimated by a mass balance that approximately 2.38 gallons of water are consumed as a feedstock to produce 1 kg of hydrogen gas (14.13 liters), assuming no losses.”
B) However, 1 Gallon of water is said to contain approximately 4,707 liters of hydrogen.

How can both statements be correct under normal atmospheric conditions, since even with 80% efficiency of current PEM electrolyzers the first statement (A) is nowhere near the +4,000 liters of the second approximation (B)?
Physics
1 answer:
mr_godi [17]3 years ago
4 0

Answer:

hhhhhhhjjjkkllkcftkbgfjknhglncg

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A dune buggy moves through the hallway at 61.5 cm/s. How far does it travel in 4 minutes?
Contact [7]

Answer:

480.32 foot per second

Explanation:

there is a conversion thing ona famous search engine use that and I just multiple by 4

8 0
3 years ago
_____________ part of this layer has a relatively homogeneous composition, while the other part is less uniform in composition
Over [174]

Answer:

Oceanic part of this layer has a relatively homogeneous composition, while the other part is less uniform in composition

Explanation:

Your question is base on the earth crust which is either oceanic crust or continental.

The earth Lithosperic layer is divided into two part namely the oceanic crust and the continental crust.

The oceanic crust is more uniform in composition than the continental crust because of the kind  of earth events that is predominant here. For example sea floor spreading  . The oceanic crust is composed dominantly of Mafic rocks. The Mafic rocks are extrusive igneous rocks. This rocks are formed when magma intrudes into the ocean surface, due to rapid cooling this rocks solidified quickly to form these rocks that are mainly basaltic. The oceanic rocks are dominantly basaltic. The basaltic dominance makes the oceanic crust relatively homogeneous in composition.

Events like sea floor spreading whereby the oceanic floor diverge forming two parts are one factors that causes mantle materials(molten magma) to reach the surface to form this basaltic rocks. The separating  point, the mid oceanic ridges is where new crust are formed from the up-welling of magma.  As you move away from the mid oceanic ridges the rocks become older.  

4 0
4 years ago
The sharper the sound is the smaller the frequency of a vibrating body true or false​
natima [27]
  • Answer:
  • True....
  • Explanation:
  • Amplitude determines the loudness of sound. Loudness is proportional to the square of the amplitude of the vibrating body which produces sound. ... Less the frequency, deep is the sound.
4 0
3 years ago
How Fast Is Lightning?
Digiron [165]
The return stroke (the current that cause the visible flash) moves upward at a speed of about 320,000,000 ft per second or about 220,000,000 miles per hour (about 1/3 the speed of light).
8 0
3 years ago
The resistance, R, of a wire varies directly as its length and inversely as the square of its diameter. If the resistance of a w
lbvjy [14]

R is proportional to the length of the wire:

R ∝ length

R is also proportional to the inverse square of the diameter:

R ∝ 1/diameter²

The resistance of a wire 2700ft long with a diameter of 0.26in is 9850Ω. Now let's change the shape of the wire, adding and subtracting material as we go along, such that the wire is now 2800ft and has a diameter of 0.1in.

Calculate the scale factor due to the changed length:

k₁ = 2800/2700 = 1.037

Scale factor due to changed diameter:

k₂ = 1/(0.1/0.26)² = 6.76

Multiply the original resistance by these factors to get the new resistance:

R = R₀k₁k₂

R₀ = 9850Ω, k₁ = 1.037, k₂ = 6.76

R = 9850(1.037)(6.76)

R = 69049.682Ω

Round to the nearest hundredth:

R = 69049.68Ω

8 0
3 years ago
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