Determine the correct name for the compound, Mg3N2. A) Manganese nitride B) Magnesium nitride Eliminate C) Magnesium (II) nitrid
2 answers:
Answer : The correct option is, (B) Magnesium nitride
Explanation :
is an ionic compound because magnesium element is a metal and nitrogen element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The naming of ionic compounds is given by :
- Cation is written first.
- The anion is written next and a suffix is added at the end of the anion. The suffix written is '-ide'.
Thus, the name of is magnesium nitride.
Therefore, the correct option is, (B) Magnesium nitride
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Answer:
To prepare 1.00 L of 2.0 M urea solution, we need to dissolve 120 g of urea in enough water to produce a total of 1.00 L solution
Explanation:
Molarity of a solute in a solution denotes number of moles of solute dissolved in 1 L of solution.
So, moles of urea in 1.00 L of a 2.0 M urea solution = 2 moles
We know, number of moles of a compound is the ratio of mass to molar mass of that compound.
So, mass of 2 moles of urea =
Therefore to prepare 1.00 L of 2.0 M urea solution, we need to dissolve 120 g of urea in enough water to produce a total of 1.00 L solution
So, option (C) is correct.