Answer: Evaporation and condensation are the two changes in state which are most represented in water cycle.
Explanation:
A process of circulation of water by passing through different states between the atmosphere, oceans and land is known as water cycle.
In water cycle, the most represented changes in state are evaporation and condensation. As during evaporation, the water present in the oceans, rivers, wells or on the land evaporates because of the heat from the sun as a result the liquid state is changing into gas.
Whereas, during condensation gas or water vapours changes into liquid. For example, when water condenses in the atmosphere it results in the formation of clouds.
Thus, it can be concluded that evaporation and condensation are the two changes in state which are most represented in water cycle.
Answer:
C.
Explanation:
Stereoisomers are molecules that have the same molecular formula and with their atoms connected in the same way but pointing in different directions.
<em>cis</em>-Pent-2-ene has formula C₅H₁₀
A. is wrong, because its formula is C₅H₁₂
B. and D. are wrong, because their formulas are C₅H₈
The only option left is C. It has formula C₅H₁₀
C. is a stereoisomer of <em>cis</em>-pent-2-ene, because atoms 1 and 4 are on opposite sides of the double bond.
Think of the C=C bond as a river.
In the <em>cis </em>isomer (top), atoms 1 and 4 are on the same side of the river (zis = zame zide).
In the <em>trans</em> isomer (bottom), atoms 1 and 4 are on opposite sides of the river (trans = across or opposite).
So, C. is a stereoisomer of cis-pent-2-ene.
Sodium, Atomic mass: 22.989769 g
You can see in a periodic table
Answer:
1. light is made up of energy
2. light travels in a straight line
3. the speed of light is exactly 299 792 km per second
4. this is the speed when light is traveling in a vacuum and not obstructed by the atmosphere 5. traveling at the speed of light you could go around the earth seven and a half times in a second
6. light can move super fast super slow and not at all
7. we can use light to weigh Stars
8. we can use light as tweezers
9. bubbles can turn sound into light
10. lasers can make things cold
The Law of Conservation of Matter states that matter cannot be created or destroyed. The carbon cycle is an example of the Law because the same carbon atoms are being recycled through the carbon cycle. ... Carbon is used for energy, and some is stored for growth.
