Answer:
False
Explanation:
Molecules of the same substance are made up of the same type of atoms and look exactly alike.
Hence, if I have two molecules of methane having exactly the same atoms of carbon and hydrogen,the both are indistinguishable from each other based on appearance.
Hence all molecules of methane are exactly alike if they are composed of atoms of the same isotope of hydrogen and carbon.
To determine te volume of the solution given the amount of solute present, we simply divide the amount in moles with the concentration in molarity. First, we make sure the amount of solute is expressed in moles.
moles KCl = 2.55 g KCl / 74.55 g/mol = 0.0342 mol KCl
Volume of solution = 0.0342 mol / 0.155 mol /L = 0.221 L solution or 221 mL of the solution
Answer:
0.2M
Explanation:
Data obtained from the question include:
C1 = 2.0 M
V1 = 100mL
V2 = 1000mL
C2 =?
Using the dilution formula C1V1 = C2V2, the molarity of the diluted solution can be obtained as follows:
C1V1 = C2V2
2 x 100 = C2 x 1000
Divide both side by the 1000
C2 = (2 x 100) / 1000
C2 = 0.2M
The molarity of the diluted solution is 0.2M
A skeletal formula is usually used for organic compounds
Answer:
a, b
Explanation:
Electrolytes dissociate to make ions, because of it they conduct electricity.
