I think the correct answer from the choices listed above is option D. The correct mass of nitrogen would be 2.9 g. The mass is calculated by multiplying the density and the volume of the substance. The correct answer should have two significant figures since it is the least precise operation.
Answer:
Explanation:
Sure you can - Mercury and water are both liquid at room temperature and atmospheric pressure. But Mercury is much much heavier or denser than water. So much that the two substances will not mix. The lighter water can be separated by pouring it out while the heavy Mercury will stay in the bottom.
Answer:
4
Explanation:
I guess it says more about the problem
Mass of iron chloride (FeCl₂) : 22.68 g
<h3>Further explanation</h3>
Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison
With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired
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The iron ions in 50 g mixture :