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Karolina [17]
3 years ago
15

Review the wind chill chart. Which identifies the wind chill for these conditions? The outside temperature is 15 degrees fahrenh

eit, and the wind speed is 25 miles per hour.
A. 10 degrees Fahrenheit
B. 25 degrees Fahrenheit
C. -4 degrees Fahrenheit
D. -8 degrees Fahrenheit
Chemistry
2 answers:
Alexxx [7]3 years ago
6 0

the answer is C. ( hope this helps!)

Vilka [71]3 years ago
4 0
The answer is C. -4 degrees Fahrenheit

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Calculate the atomic mass of nitrogen if the two common isotopes of
Misha Larkins [42]

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Atomic mass of nitrogen = 14.0067 amu.

Explanation:

Isotopes can be defined as two or more forms of a chemical element that are made up of equal numbers of protons and electrons but different numbers of neutrons.

Generally, the isotopes of a chemical element have the same chemical properties because of their atomic number but different physical properties due to their atomic weight (mass number).

The two isotopes of nitrogen are nitrogen-14 and nitrogen-15.

Given the following data;

Relative abundance of N-14 = 99.63%

Atomic mass of N-14 = 14.003

Relative abundance of N-15 = 0.37%

Atomic mass of N-15 = 15.000

The atomic mass is;

14.003 × (99.63/100) + 15.000 × (0.37/100)

Atomic mass = 14.003 × (0.9963) + 15.000 × (0.0037)

Atomic mass = 13.9512 + 0.0555

Atomic mass = 14.0067 amu.

<em>Therefore, the atomic mass of nitrogen is 14.0067 amu. </em>

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3 years ago
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