Answer: 18
Justification:
1) The most common ion of calcium is Ca 2+
2) That means that the atom, neutral calcium, has lost two electrons.
3) The atomic number of calcium is 20.
4) Atomic number is the number of protons, so calcium has 20 protons.
5) Therefore, the neutral atom of calcium also has 20 electrons (to make a net charge of zero).
6) Then, the ion Ca 2+ has 20 - 2 = 18 electrons.
Answer: 18 electrons.
Answer:
clastic, organic, and chemical
answer: dispersed from the liquid so cold air can take its place
Answer:
The thumb alone is controlled by nine separate muscles; The hand has been used as a symbol of protection since ancient times; The human hand is different to the hands or paws of other animals, because it has fingers and a thumb that can work together. Each finger has 3 bones and the thumb has two bones
Explanation:
The orange would have more energy since it used it to grow while the pasta was baked causing all its energy to leave it
