PLEASE HELP: iron reacts with nitrogen to form iron(III) nitride
1 answer:
Answer:
Explanation:
Iron is Fe, nitrogen is N. Nitrogen is diatomic, which means it occurs as a molecular pair by itself. Iron III nitride has a chemical formula of FeN because nitrogen has a charge of 3-, and iron III tells us the iron has a charge of 3+ so you just need one of each to make the charges balance and the compound neutral.
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Answer:
1.67g/cm3
Explanation:
The formula for density is . The m variable stands for mass and the v variable stands for volume.
The mass of the brown sugar is 10.0g and the volume is 6.0cm3, so we can plug those values into the equation.
Rounded to 3 significant figures, the density of the block of brown sugar is 1.67 g/cm3. If the mass is in grams and the volume is in cm3, the unit for the final answer is (grams per centimetres cubed).
<u>Answer:</u> The mass of the substance that must be added is 75.2 grams.
<u>Explanation:</u>
Elevation in boiling point is defined as the difference in the boiling point of solution and freezing point of pure solution.
The equation used to calculate elevation in boiling point follows:
= ? °C
Boiling point of pure water = 100°C
Boiling point of solution = 101.54°C
Putting values in above equation, we get:
To calculate the elevation in boiling point, we use the equation:
Or,
where,
= 1.54°C
i = Vant hoff factor = 1 (For non-electrolytes)
= molal boiling point elevation constant = 0.512°C/m.g
= Given mass of solute = ? g
= Molar mass of solute = 50.0 g/mol
= Mass of solvent (water) = 500 g
Putting values in above equation, we get:
Hence, the mass of substance that must be added is 75.2 grams.