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List four reasons to support that water is a compound and not a mixture.
According to the law of constant proportions, which of the following statements is true for a compound like carbon dioxide (CO₂)?
You start with a container that holds exactly 4 grams of nitrogen gas (N₂). According to your lab manual, the reaction to form ammonia requires nitrogen and hydrogen to combine in a mass ratio of 14 : 3. Given this information, calculate the mass of hydrogen gas (H₂) you need to react completely with your 4 grams of nitrogen gas.
Give the names of the elements present in the following compounds. (i) Table salt (ii) Slaked lime (iii) Vinegar (iv) Baking powder
How many atoms are present in a (i) CO₂ molecule (ii) NH₄⁺ ion
Write down the names of compounds represented by the following formulae: (i) KNO₂ (ii) H₂S (iii) K₂SO₄ (iv) MgCl₂
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