There are a total of Forty seven questions in the math section of the psat.
Answer:
B. CH₅N
Explanation:
The combustion reaction of a compound CₐHₓNₙ with O₂ is:
CₐHₓNₙ + O₂ → a CO₂ + X/2 H₂O + n NO₂
Where 1 mole of CₐHₓNₙ with an excess of O₂ produce a moles of CO₂, X/2 moles of H₂O and n moles of NO₂
Thus, you need to convert the mass of CO₂ and H₂O to moles to find the C:H ratio and determine a possible empirical formula thus:
Moles CO₂ (Molar mass 44g/mol):
44g ₓ (1mol / 44g) = 1 mole CO₂ = 1 mole C
Mole of H₂O (Molar mass 18g/mol):
45g ₓ (1 mol / 18g) = 2.5 moles H₂O = 5 moles H
Thus, in the compound you have 5 moles of H per mole of C, and a possible empirical formula is:
B. CH₅N
The only structure that meet this C:H ratio
Answer:
Answer might be A
Explanation:
I don't know the full passage but from what you wrote about the "Red Grouper, it might be a figurative language.
The answers are hyper cortisol response and higher levels of physical aggression.
<h3>What is hyper cortisol?</h3>
When the body is exposed to excessive quantities of the hormone cortisol for an extended period of time, hypercortisolism, also known as Cushing syndrome, develops.
Mike lives in the northern united states (in minnesota) and nick lives in the southern united states (louisiana). when they both feel insulted by the same individual, nick will be more likely to have a(n) hyper cortisol response and show higher levels of physical aggression.
Cortisol is a stress-inducing hormone, according to research on hormones in the human body. Now, it has been proved that when it is hot in the summer, the cortisol hormone circulates in the blood in a very significant amount. This can result in frustration as well as physical hostility.
Thus, the answers are hyper cortisol response and higher levels of physical aggression.
Learn more about the hyper cortisol here:
brainly.com/question/16288547
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