The relative mass of an electron is 1/1840 the mass of a C-12 atom. Hence, option B is correct.
<h3>What is an electron?</h3>
An electron is a negatively charged subatomic particle.
An electron is very small, about 1/1,837th the mass of a proton. Atomic Weights Atomic mass of an atom is expressed in atomic mass units (amu) which are approximately grams. A more conventional way of expressing the mass of an atom is Atomic Weight.
Atomic mass units are expressed relative to the atomic mass unit of an unbound neutral carbon-12 atom.
Hence, the relative mass of an electron is 1/1840 the mass of a C-12 atom.
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Answer:
La globalización, en ocasiones denominada mundialización, es un proceso económico, tecnológico, político, social y cultural a escala mundial que consiste en la creciente comunicación e interdependencia entre los distintos países del mundo, uniendo sus mercados sociales a través de una serie de transformaciones sociales y políticas que les brindan un carácter global.
Explanation:
<u>Answer:</u> The mass percent of ethylene glycol in solution is 14.2 %
<u>Explanation:</u>
We are given:
Molarity of ethylene glycol solution = 2.45 M
This means that 2.45 moles of ethylene glycol is present in 1 L or 1000 mL of solution.
- To calculate the mass of solution, we use the equation:
Density of solution = 1.07 g/mL
Volume of solution = 1000 mL
Putting values in above equation, we get:
- To calculate the number of moles, we use the equation:
Moles of ethylene glycol = 2.45 moles
Molar mass of ethylene glycol = 62 g/mol
Putting values in above equation, we get:
- To calculate the mass percentage of ethylene glycol in solution, we use the equation:
Mass of solution = 1070 g
Mass of ethylene glycol = 151.9 g
Putting values in above equation, we get:
Hence, the mass percent of ethylene glycol in solution is 14.2 %