Answer:
Explanation:
physical properties include:
colour
shape
size
taste
etc............
Answer:
-0.276 Degrees C
Explanation:
kf of water is 1.86
Freezing point depression= m x kf x i
i= ions present ( K+ Cl-) 1=2
1.86x2X.743= .276
Since its freezinf point depression the freezing point will lower
so
0-.276= -.276
Answer:
The correct answer will be "18.25 g".
Explanation:
The given values are:
Specific heat,
C = 0.45 J/g･°C
Heat involved,
q = 801 J
Temperature,
ΔT = 120.0°C-22.5°C
= 97.5°C
As we know,
⇒ 
On substituting the given values, we get
⇒ 
⇒ 
Answer:
c.The atoms in the solid would be vibrating in position.
Explanation:
The properties of solid, liquid and gas which makes them different ares the intermolecular interactions between particles and the thermal energy.
Solids molecules are fixed in their position and may show vibrations.
Liquid molecules can move slowly as they have inter-molecular forces in between solid and gas,
Gas molecules can move vigorously here and there due very weak inter-molecular interactions and high thermal energy.
Thus the answer would be the atoms in the solid would be vibrating in position.
Answer:
All around you there are chemical reactions taking place. Green plants are photosynthesising, car engines are relying on the reaction between petrol and air and your body is performing many complex reactions. In this chapter we will look at two common types of reactions that can occur in the world around you and in the chemistry laboratory. These two types of reactions are acid-base reactions and redox reactions.
Explanation:
