Answer:
Sand has less specific heat than water.
Explanation:
Specific Heat is amount of heat needed per unit mass, to raise temperature by 1 degree celsius.
More specific heat means more heat energy needed to increase temperature. It implies - more time needed to absorb heat, increase temperature; and also more time needed to lose its heat.
Less specific heat means less heat energy needed to increase temperature. It implies - less time needed to absorb heat, increase temperature; and also less time needed to lose its heat.
Sand has less specific heat than water. So, it needs less heat absorption to increase temperature by per unit (celsius) ; than water. Hence, same level of heat to both sand & water ; increase temperature of sand more than water, & make it more hot.
Because membrane receptors interact with both extracellular signals and molecules within the cell, they permit signaling molecules to affect cell function without actually entering the cell.
Idk but im guessing a. o3
Answer:
Hypothesis
Explanation:
The experiment is giving him the same value because he is using two strong acid
Answer:
In the given voltaic cell, the reaction occurring at cathode :

Explanation:
A voltaic cell is an electro-chemical cell which converts chemical energy into electrical energy. It has two electrodes :
- Anode : Where oxidation occurs , that is loosing of electrons.

- Cathode : Where reduction occurs, that is gaining of electrons.

In the given voltaic cell, the reaction occurring at anode:

In the given voltaic cell, the reaction occurring at cathode :
