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Aleks04 [339]
3 years ago
6

2 Points

SAT
1 answer:
Vesna [10]3 years ago
5 0

Answer:

CORRECT ANSWER IS A and D

Explanation:

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Which feature is an example of physiological adaptation? A. beak sizes of birds B. octopuses’ ability to squirt ink C. communica
goblinko [34]
The right answer is : Octopus’s ability to squirt ink

Brainliest answer?
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A blank concerning the facts and circumstances of the fatal injury made by the victim of a homicide who is about to die, and doe
Ratling [72]
Sorry but i really don't understand that question 
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If y equals 20% of x and z equals 40% of y, what is the value of z?
vredina [299]
The value of z is x(.20) = (.40)y
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3 years ago
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A sample of a compound that contains only the elements c, h, and n is completely burned in o2 to produce 44. 0 g of co2, 45. 0 g
Elan Coil [88]

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

8 0
3 years ago
Education empowers a person elaborate this statement with example.
Murljashka [212]

Answer:

Education empowers a person by creating more employment opportunities, securing a higher income, developing problem-solving skills, and by providing a a prosperous happy life.

Explanation:

Education empowers a person by opening doors to the job market, combating inequality, fostering solidarity, and promoting environmental stewardship. Education empowers people with the knowledge, skills and values they need to thrive and build a better world.

7 0
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