law of constant proportion with example
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Answer:
The law of constant proportion, also known as the law of definite proportions, states that in a chemical compound, the elements are always present in the same proportion by mass.
For example, let's take water (H2O). No matter where you find water, whether it's from a tap or a natural source, the ratio of hydrogen to oxygen is always 2:1 by mass. This means that for every 2 grams of hydrogen, there will always be 16 grams of oxygen in water.
This law helps chemists determine the composition of compounds and understand the consistent ratios of elements in different substances.
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Explanation:
For example, pure water will always contain hydrogen and oxygen in a fixed mass ratio (a gram of water consists of approximately 0.11 grams of hydrogen and 0.88 grams of oxygen, the ratio is 1:8). The law of constant proportions is often referred to as Proust's law or as the law of definite proportions.