The more work someone does, the more energy they need. For example, if someone is moving a large couch they are going to use a lot of energy because it is heavy. However, if the couch was smaller, they would be using less energy because it does not weigh as much as they will not become as tired!
Answer: A = atomic number = 12
Explanation: A (atomic number) defines the chemical element. It is the numbervof protons or electrons. Neutron numbers may vary, produving isotopes of differing atomic mass. This isotope has atomic mass 28. The atomic number 12 = carbon. C28 does not really exist. If it could be produced it would be radioactive with an almost zero halflife.
<span>389.88094 amu
First we look up the atomic mass of all elements contained in calcium iodate using the periodic table:
Ca: 40.078
I: 126.90447
O: 15.999
As an intermediate step we calculate the molecular mass of the ion IO3:
126.90447 + 3*15.999 = 174.90147
Then we calculate the mass of one calcium atom and 2 iodate ions:
2*174.90147 + 40.078 = 389.88094 amu</span>
Answer:
Rule 1: Drop mono for the first element. Rule 2: Drop all prefixes if the first element is H. Rule 3: Drop the second o in mono prior to a vowel. Rule 4: Drop the a in prefixes ending in a prior to a vowel.
