Should be a Polar-Covalent bond.
The amount of water given is a control. D) because, if a plant grows bigger as a result of the water, and not the sun this would disrupt the experiment.
Answer:
Earth's crust is covered by a densed air blanket called atmosphere. Due to which we feel warm even during night when there is no sun. The air near the atmosphere is less dense compared to the air near our crust. Similarly we can experience high pressure near the atmosphere comparelatively we experience less pressure near crust. The presence of atmosphere above us makes the wind fair sometimes stromy and also helps in pteperation of wind and breezes in earth's surface.
Answer:
Q = 266 Joules
Explanation:
Given the following data;
Mass = 20g
Initial temperature = 10°C
Final temperature = 29°C
Specific heat capacity of granite = 0.1 Cal/g°C to J/g°C = 0.7J/g°C
To find the quantity of heat absorbed;
Heat capacity is given by the formula;
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
Substituting into the equation, we have;
Q = 20*0.7*(29-10)
Q = 14 * 19
Q = 266 Joules
The correct answer to the question is B) Condensation.
EXPLANATION:
Before coming into any conclusion, first we have to understand various phase changes.
There are various phase changes in which matter in one state is converted into matter in another state.
Evaporation: Evaporation is the thermal process of state change in which a liquid is converted into corresponding vapor state.
For instance, water to steam or vapor.
Condensation: Condensation is just the opposite process of evaporation. In this process, a substance in vapor phase is converted into liquid phase.
For instance, water vapor to liquid water.
The two processes that is Convection and radiation mentioned in the question are not phase changes. These two are different modes of heat transfer between substances.
Hence, the process by which water vapor changes to a liquid is called condensation.
