Answer:
a) increases.
b) remains the same.
c) decreases. the hydrogen molecules constrict or shrink from actual size!
Explanation:
Since ,
Density is given as mass divided by the volume .
( a ) As the Chlorine gas is compressed , the molecules of gas comes close to each other , and hence , the density increases .
( b ) When the lead is taken to high mountain , its density remains the same , as density is independent of higher pressure , as going to mountain will increase the pressure .
( c ) As the water is freeze , its density decreases ,
Because ice is less dense than water , as seen , the ice ice can float on the surface of water .
Upon a constant pressure (P), volume (V) of a gas will vary in direct proportion to changes in temperature (T). So V1/T1 = V2/T2
V2 = V1T2/T1 = (500)(300)/150
V2 = 150000/150 = 1000 mL
If you spill a chemical on you, you should call poison control or 911
The combustion of ammonia in presence of excess oxygen yields NO2 and H2O.
The molar mass of ammonia is 17.02 g/mol
Therefore, moles of ammonia in 43.9 g
= 43.9 /17.02
= 2.579 moles
From the equation the mole ratio of ammonia to nitrogen iv oxide is 4:4
The molar mass of NO2 is 46 g/mol
The number of moles of NO2 is the same as that of ammonia since they have equal ratio,
= 2.579 moles
Therefore, mass of NO2
= 2.579 moles ×46
= 118.634 g
≈ 119 g
Answer:
Electrostatic attraction between the ions
Step-by-step explanation:
A salt crystal consists of Na⁺ and Cl⁻ ions stacked together in a crystal.
The ions have opposite charges, so they are electrostatically attracted to each other.
Because the ions are so close together, the attractive forces are quite large.
