Answer:
0.0055 mol of N2O5 will remay after 7 min.
Explanation:
The reaction follows a first-order.
Let the concentration of N2O5 after 7 min be y
Rate = Ky = change in concentration of N2O5/time
K is rate constant = 6.82×10^-3 s^-1
Initial concentration of N2O5 = number of moles/volume = 2.1×10^-2/1.8 = 0.0117 M
Change in concentration = 0.0117 - y
Time = 7 min = 7×60 = 420 s
6.82×10^-3y = 0.0117 - y/420
0.0117 - y = 420×6.82×10^-3y
0.0117 - y = 2.8644y
0.0117 = 2.8644y + y
0.0117 = 3.8644y
y = 0.0117/3.8644 = 0.00303 M
Number of moles of N2O5 left = y × volume = 0.00303 × 1.8 = 0.0055 mol (to 2 significant digits)
Water containing carbonic acid and calcium
1.) Onomatopoeia - <span>The use of words whose sounds suggest their meanings.
Meow purred the cat as I scratched behind it's ear.
2.) Personification - </span><span>A figure of speech in which human qualities are attributed to an object, animal or idea.
</span><span>
The cat rolled it's eyes at it's humans obnoxious behaviour.
3.) Alliteration - </span><span>The repetition of sounds/letters at the beginning of a word.
</span>The keeper c<span>ouldn’t </span>k<span>eep all the cats in their cages.
</span><span>
4.) Pun - A play on words.
You have cat to be kitten me right now!
5.) Hyperbole - An over-exaggeration.
The cat jumped so high I swore it was going to the moon!
6.) Idiom - </span><span>A figurative meaning of the connotation of the word. (Different from the literal meaning.)
</span><span>
Well, she sure is another breed of cat, I'll tell you that!
(omg it rhymes too how exciting !!)
7.) Simile - </span><span>A comparison using like or as.
</span><span>
The cat's fur was as dark as night.
8.) Metaphor - </span><span>A comparison not using like or as.
</span><span>
The cat's fur was a blanket of warmth!!
Hope these examples helped !! :-)
</span>
Answer:
D. It formed solely from atoms generated by the Big Bang.
Explanation:
From the history of the earth and it's solar system, options A to C are all correct ways of summarizing the Solar System's development. Because they have been proven to be in sync with reality of the solar system whereas the Bing bang theory has not done so as we know it says the universe was birthed from a huge explosion called big bang.
