From the calculations, the percentage by mass of the nitrogen is 18.9 %..
<h3>What is the percentage by mass?</h3>
The term percentage by mass refers to the mass of an atom that is contained in a compound.
Hence, the compound magnesium nitrate has the formula Mg(NO3)2. The molar mass of the compound is 24 + 2(14 + 3(16)) = 148 g/mol.
The percentage by mass of nitrogen is; 28/ 148 * 100/1 = 18.9 %.
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I think it’s OH I’m not sure
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: The answer is 2 atoms
Explanation: