Answer:
1-if u are answering light waves question , then the answer is translucent mirror or objects
2- Oxygen
3- compass
Answer: (C) .There are four molecules of sodium sulfite.
Explanation:
means that there are four molecules of sodium sulfite.
Molecule is defined as a group of atoms bonded together. They are smallest unit of the substance which participates in a chemical reaction.
Atom is defined as smallest unit of matter which composed of electrons , protons and neutrons.
Answer: 6.022x10²³ (Avogadro's Number)
Explanation: The number of particles in 1 mole of a substance is determined by the Avogadro's Number.
The phosphorous cycle does not include an atmospheric component because phosphorous does not cycle through the atmosphere. In comparison, important processes of the carbon and nitrogen cycle occur in the atmosphere
The answer is B. Chemical change
