Answer:
is a double displacement reaction
- is a redox reaction
- is a combination reaction
- is a decomposition reaction
Explanation:
It is of the form
Both oxidation and reduction occur in this reaction. Fe gets oxidized and H gets reduced.
It is an exothermic combination reaction. Calcium reacts with water to produce calcium hydroxide and heat is released in this process.
It is a decomposition reaction where nickel chloride decomposes to nickel and chlorine.
Kinetic energy = (1/2) (mass) (speed)²
The rock's kinetic energy is not
(1/2) (4 kg) (10 m/s)²
= (1/2) (4 kg) (100 m²/s²)
= 200 Joules .
It may be more, or it may be less. The only thing
we can be sure of is that it is not 200 Joules.
Answer:
it means a cell has 4.5Volt of electromtive force.
Answer:
Explanation:
The bulk modulus is a constant that describes how resistant a substance is to compression.
It is defined as the ratio between increase in pressure and the resulting decrease in a volume of the material.
It is given by a formula :
OR
where:
& are the change in volume and change in pressure respectively.
V= original volume
According to the given:
So,
.................................(1)
&
..................................(2)
From the given conditions we compare equations (1) & (2):
cancelling the equal terms
The material in first case undergoes twice the volume reduction than that of the material in first case under the given conditions.