Orbit, natural satellites, international space station, moon
5, naked eye, Mercy, Venus, Mars, Jupiter, Saturn, solar system, 1
I would need to see the choices for this section
1.Stars
2. The Milky Way
3. The sun
4.8 minutes
5. Satellites
6. 100 thousand million
7. Canis Major Dwarf Galaxy
8. 10s of thousands of years
Answer:
Pascal is the most common unit for measuring pressure
The average sea level pressure is 1013 mbar
Answer:
The correct option is;
The reaction pathway for the trials is different
Explanation:
The effect of a catalyst in a chemical reaction is to increase the rate of a reaction by changing the pathway or mechanism of the reaction and/or to lower the transition state's energy thereby lowering the activation energy of the reaction
The pathway of the reaction is changed by the catalyst by the formation of intermediate compounds by the catalyst which require lower activation energy to form the products than the original non-catalyzed reactants. In the process the catalyst is regenerated, thereby, not taking part in the reaction.
Answer:
A. Atoms gain, lose, or share electrons to achieve a full valence shell
Explanation:
The octet rule is best explained as the process in which atoms lose or gain or share electrons to achieve a full valence shell.
- In this process bonds are formed when there is an attraction between the two substances.
- For electrovalent compounds, an atom will lose electrons or gain electron to form an ion, the electrostatic attraction causes the bond formation.
- Covalent compounds, form by sharing of electrons.
Therefore, the octet rule is attained when atoms gain full valence configuration.
