Most of the cars running on the street today use petroleum products as fuel, the problem with petroleum is that it’s a finite resource and causes pollution when used. The passage suggests hydrogen fuel cells as a better alternative for petroleum. However, the lecturer believes hydrogen is not a practical solution yet and refutes all the benefits of Hydrogen fuel cell discussed in the passage.
First, Hydrogen required to make fuel cells is not readily available. The hydrogen from atmosphere has to be converted into pure liquefied Hydrogen, this is a complex process and requires sophisticated cooling technologies. Incorporating such technologies practically for mass manufactured cars in not yet possible. Hence, the passage’s claim of Hydrogen fuel cells being an alternative is overly optimistic.
Morevoer, the purification process of converting Hydrogen into pure liquefied Hydrogen is also a high energy task, fuels such as coal or oil would have to be used. Hence, although the Hydrogen powered car may not contribute to pollution, but the process to make Hydrogen fuel cells will release many harmfull green house gasses such as co2. The passage’s assessment that Hydrogen fuel cells are environment friendly, does not stand ground.
There is no doubt that present internal combustion engines are very inefficient, and a hydrogen fuel cell can easily achieve double the efficiency of an internal combustion engine. However, an increase in efficiency does not correspond to cheaper operation of the car. The sophisticated hydrogen fuel cell technology is very expensive, components have to be made up of rare earth metals like platinium. Hence, it is unlikely for such expensive technology to be incorporated in cars any time soon.
Both the lecturer and the reading passage agree on the negative impact of using fossil fuel for cars. However the reading passage grossly overestimates the practicality of using Hydrogen fuel cells as an alternative. The lecturer highlights that there are numerous challenges that Hydrogen fuel cells need to overcome, for them to be part of mass produced cars.
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Grammar and spelling errors:
Line 3, column 189, Rule ID: NEEDS_FIXED[1]
Message: "requires sophisticated" is only accepted in certain dialects. For something more widely acceptable, try 'sophisticating' or 'to be sophisticated'.
Suggestion: sophisticating; to be sophisticated
... this is a complex process and requires sophisticated cooling technologies. Incorporating suc...
^^^^^^^^^^^^^
Line 9, column 103, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: However,
...e impact of using fossil fuel for cars. However the reading passage grossly overestimat...
^^^^^^^
Transition Words or Phrases used:
also, but, first, hence, however, if, may, so, as to, no doubt, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 18.0 10.4613686534 172% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 6.0 12.0772626932 50% => More relative clauses wanted.
Pronoun: 9.0 22.412803532 40% => OK
Preposition: 32.0 30.3222958057 106% => OK
Nominalization: 9.0 5.01324503311 180% => OK
Performance on vocabulary words:
No of characters: 1805.0 1373.03311258 131% => OK
No of words: 332.0 270.72406181 123% => OK
Chars per words: 5.43674698795 5.08290768461 107% => OK
Fourth root words length: 4.2685907696 4.04702891845 105% => OK
Word Length SD: 2.99719682023 2.5805825403 116% => OK
Unique words: 178.0 145.348785872 122% => OK
Unique words percentage: 0.536144578313 0.540411800872 99% => OK
syllable_count: 572.4 419.366225166 136% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Interrogative: 0.0 0.116997792494 0% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 17.0 13.0662251656 130% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 35.7556102985 49.2860985944 73% => OK
Chars per sentence: 106.176470588 110.228320801 96% => OK
Words per sentence: 19.5294117647 21.698381199 90% => OK
Discourse Markers: 4.17647058824 7.06452816374 59% => More transition words/phrases wanted.
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 2.0 4.19205298013 48% => OK
Sentences with positive sentiment : 10.0 4.33554083885 231% => Less positive sentences wanted.
Sentences with negative sentiment : 3.0 4.45695364238 67% => OK
Sentences with neutral sentiment: 4.0 4.27373068433 94% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.293653916456 0.272083759551 108% => OK
Sentence topic coherence: 0.108221162442 0.0996497079465 109% => OK
Sentence topic coherence SD: 0.0403168620347 0.0662205650399 61% => OK
Paragraph topic coherence: 0.179013287035 0.162205337803 110% => OK
Paragraph topic coherence SD: 0.0278713311377 0.0443174109184 63% => OK
Essay readability:
automated_readability_index: 14.0 13.3589403974 105% => OK
flesch_reading_ease: 43.73 53.8541721854 81% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.9 11.0289183223 108% => OK
coleman_liau_index: 14.27 12.2367328918 117% => OK
dale_chall_readability_score: 9.0 8.42419426049 107% => OK
difficult_words: 93.0 63.6247240618 146% => OK
linsear_write_formula: 11.5 10.7273730684 107% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 12.0 11.2008830022 107% => OK
What are above readability scores?
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Write the essay in 20 minutes.
Rates: 83.3333333333 out of 100
Scores by essay e-grader: 25.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.