Answer:
Radiation
Explanation:
<u>Radiation</u> travels in energy <u>waves</u>
Answer:
Yes, it is standard for each element. You can calculate it from the formula: n=A-Z, where n is the number of neutrons, A is the atomic mass and Z is the atomic number.
B.) Decomposition
hope this helps
The mass of a nickel coin is 5 g.
1 mol of Ni weighs 58 g. 1 mol contains 6.022 x 10²³ atoms of Ni.
therefore in 58 g there are 6.022 x 10²³ atoms of Ni
then in 5 g the number of Ni atoms are - 6.022 x 10²³ /58 x 5 = 5.2 x 10²² Ni atoms
Therefore number of Ni atoms are 5.2 x 10²² atoms in a nickel coin
