<u><em>Alcohol is used as medical liquids that make the person sleep and never feel anything.They spread it using sharp needles.</em></u>
Answer:
See explanation for details
Explanation:
6) C is false. What is going on there is actually a transformation of mechanical energy to the chemical energy stored in carbon dioxide in the atmosphere. The burning of the fossil fuel produces mechanical energy which is stored in the chemical bonds of CO2 hence the statement is false
7) A is true. Solar energy refers to energy from the sun, this energy is trapped from Tue sun and stored in chemical bonds in glucose, and starch molecules during photosynthesis.
8) C represents the release of carbon dioxide by the burning of fossil fuels.
9) B,C,D, E
B refers to photosynthesis in which plants take in atmospheric carbon dioxide
C refers to the burning of fossil rules which releases atmospheric carbon dioxide
D refers to the dissolution of atmospheric carbon dioxide in water bodies to form carbonates in water.
E refers refers the return of organic carbon to the soil by dead organisms
10) A and C
A shows the conversion of solar energy to chemical energy
C shows the conversion of mechanical energy to chemical energy
Answer:
The answer to your question is the first option
Explanation:
Just remember that to balance using this method,
first look for the elements that change their oxidation number, and
later count the number of electrons that changed,
later identify which element oxidazes and which reduces and
finally cross the number of electrons that change in each semireaction and write these numbers in the main reaction.
2Cr⁺³ (aq) + 6Cl⁻ (aq) ⇒ 2Cr(s) + 3Cl₂ (g)
2 Cr 2
6 Cl 6
1-Stirring.
2-Increase Temperature of the Solvent.
3-Increase Surface Area.
4 – Increase Pressure.
Answer:
Earth is located in the milky way galaxy
