B false because it says 0.5cm on top of gel
Answer:
0.250L of solution. 0.250 moles of solute.
Explanation:
As you can see in the image, there is a beaker with an amount of solution. 1/2L are 500mL and each line of the beaker represents 100mL. That means the volume of the solution is approximately 250mL = 0.250L
Molarity is an unit of concentration defined as the moles of solute per liter of solution. A solution that is 1.000M contains 1.000 moles of solute per liter of solution.
As the volume of the solution is 0.250L, the moles are:
0.250L * (1.000mol/L) = 0.250 moles of solute
We are tasked to identify the term that characterize a pure sodium chloride in a jar. To solve for this, we need to us the classification of matter matrix which is
No
Uniform Properties-----> Heterogeneous Mixture
Yes|
| No
Fixed Composition?--------> Solution
Yes|
| No
Chemical Decomposable----> Element
Yes|
|
COmpound
Since the substance have a uniform properties and fixed compositions (pure) and can be chemically decompose through electrolysis, then it is a compound
The answer should be A, they turn litmus paper blue!
