Answer: solar radiation
Explanation: Energy released from the Sun is emitted as shortwave light and ultraviolet energy. When it reaches the Earth, some is reflected back to space by clouds, some are absorbed by the atmosphere, and some is absorbed in the Earth's surface Shortwave radiation reflected back to space by clouds.
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Answer:
The correct answer is A. 3O₂ + 2Al → 2AlO₃
Law of conservation of mass states that mass can nether be created nor destroyed in a closed system or chemical reaction i.e. the total mass of the matter always remains the same throughout the chemical or physical change.
For example, in the given reaction 3O₂ + 2Al → 2AlO₃ the total mass of the reactants is equal to the total mass of the product.
Mass of oxygen = 16 x 3 = 48 AMU
Mass of aluminium = 2 x 27 = 54 AMU
Total molecular mass of the reactants = 102 AMU
Total molecular mass of the product = 2 x 27 + 6 x 8 = 102 AMU.
Hence, the total mass of the matter remains the same.
I'm pretty sure it's chemical because the calcium carbonate from the vinegar gets into the eggshell making a reaction change the entire display of the shell making it disappear.
The following statements are correct about the displacement method:
1. It can only be used to measure the volume of solids.
2. It may yield incorrect result if the matter is soluble in liquid.
The displacement method is usually used to measure the volume of solids, especially irregular solids. It involves dropping the solid in water and measuring the volume of water that is displaced. The result may be affected if the solid is soluble in water.
