78 and 78. An atom of the element has 78 electrons and 78 protons.
The atomic number is 78, so the atom has 78 protons (+).
If the atom is neutral, it must contain 78 electrons (-).
Answer:
cell
Explanation:
the basic unit of life is cell
The digestive system
Body System that breaks down food
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Answer:
When two or more atoms chemically bond together, they form a molecule. When molecules are made from two or more different kinds of atoms, the substances are called compounds. If molecules are made from only one kind of atom, the substances are elements.
Explanation:
<em> gave an explanation in my answer XD anyway hope I helped. Have a good day!</em>
Answer: Natural sources of light
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Answer: 44,8 l. of CO2 and 72 g. of water will be produced
Explanation: