Chemistry

Chemistry, 24.01.2020 05:31, alexmoy45p8yd7v

Why do scientist us ppm to measure instead of percentage

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The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

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Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

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Chemistry, 22.06.2019 16:00, winnie45

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

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