Answer:
+2
Explanation:
Since O &F Are more electronegative than N,
F=-1
2F=-2
O=-2
also the compound is neutral,
then 2N+2F+O=0
2N-2-2=0
2N=+4
N=+2
Answer:
The more polar the molecules, the stronger the force. The more hydrogen in the molecule, the stronger the force.
Explanation:
I hope this helps and please ask if you need further help!
Answer:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. ... As a result, the particles take up more volume.
Density is a ratio between the mass and the volume of a substance.It measures how much of a substance is packed into a set volume. Density increases when a larger amount of material is packed into a smaller volume. The same is true in opposite: density decreases when a smaller amount of a substance is packed into a larger volume.
To calculate density, we will take the total given mass of the substance and divide it by the total volume of its container.
In this problem, we have a mass of 86 grams and a volume of 25cm^3.
Density= mass/volume
Substitute the given values into the formula:
Density=86 grams/25 cm^3
Density=3.44 grams/cm^3
The density of the material is 3.44 g/cm^3.
Mass % of NaCl = 0.9 % (m/v)
Density of 0.9 % NaCl is about 1.0 g/mL
Volume of NaCl in mL :
= 11.25 mL NaCl