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BartSMP [9]
3 years ago
9

An air temperature of 95°C most often exists in which layer of the atmosphere?

Chemistry
1 answer:
Phoenix [80]3 years ago
4 0
Themosphere try that.
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The student who answers the riddle will get the prize ? underline pronoun<br>.​
mariarad [96]

answer:

the student <u>who</u> answers the riddle will get the prize

explanation:

  • who is the pronoun
  • a pronoun is something that substitutes for a noun
6 0
3 years ago
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What is the percent composition of carbon in heptane c7h16
Gnom [1K]

Answer: the percent composition of carbon in heptane is 83.9%

Explanation:

<u>1) Atomic masses of the atoms:</u>

  • C: 12.01 g/mol
  • H: 1.008 g/mol

<u>2) Molar mass of heptane:</u>

  • C₇H₁₆: 7 × 12.01 g/mol + 16×1.008 g/mol = 100.2 g/mol

<u>3) Mass of carbon in one mole of heptane:</u>

  • C₇: 7 × 12.01 g/mol = 84.07 g/mol

<u>3) Percent composition of carbon:</u>

  • % = (mass in grams of C) / (mass in grams of C₇H₁₆) × 100 =

           = (84.07 g/ 100.2 g) × 100 = 83.9% ← answer

8 0
3 years ago
Assume a hydrogen atom has an electron in the n-level corresponding to the month of your birthday (jan = 1, feb = 2, etc.) calcu
luda_lava [24]
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= +13.6(1/16)
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6 0
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What is Question explain

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Which statement correctly describes compounds?
vampirchik [111]

Answer:

A compound is a pure substance because its molecule cannot be broken down into simpler particles by physical means. A compound is not a pure substance because it is not an element, and only elements are pure substances.

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