Answer:
B
Explanation:
A guess because the stove is electrical not gas lit. Therefore the heat was once electrical but now thermal because it went through the pot.
Answer:
Option (b) 0.67 M
Explanation:
The following Data were obtained from the question:
Mole of MgCl2 = 0.5 mole
Volume of solution = 750mL
Molarity of MgCl2 =?
Next, we shall convert the volume given from mL to L. This is illustrated below:
1000mL = 1L
Therefore 750mL = 750/1000 = 0.75L
Now we can obtain the molarity of MgCl2 as follow:
Molarity is defined as the mole of solute per unit litre of the solution i.e
Molarity = mole /Volume
Molarity = 0.5/0.75
Molarity of MgCl2 = 0.67 M
Answer:
Combustion of hydrocarbons
Explanation:
The skeleton equation for a combustion reaction is:
How to remember:
Combustion means burning. When you make a fire, you need oxygen to keep it going (oxygen in the reactants). The fire produces carbon dioxide, which is bad for the environment.
Answer:
High melting point is answer
Liquid water being put into a freezer is a process of liquid to solid.
Liquid water in a kettle turning into steam is a process of liquid to gas.