The chlorine isotope with 18 neutrons has an abundance of 0.7577 and a mass number of 35 amu. To calculate the average atomic mass, multiply the fraction by the mass number for each isotope, then add them together.
<u>Answer:</u> The speed of the electron is
<u>Explanation:</u>
To calculate the speed of electron for given wavelength, we use the equation given by De-Broglie's, which is:
where,
= De-Broglie's wavelength =
h = Planck's constant =
m = mass of the electron =
v = speed of the electron = ?
Putting values in above equation, we get:
Hence, the speed of the electron is
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Answer:
1. What is a substance that CANNOT be chemically broken down into simpler substances?
2. What type of change is one that produces new substances like burning wood to make ashes or mixing mentos and coke. You can't get the wood or the mentos back.
3. What is a change from a solid directly to a gas
4. What is a change from a gas to a liquid
5. What are nonmetals in group 7A of the periodic table?
1. An element
2. Chemical change
3. sublimation
4. condensations
5. Halogens