Answer:
0.2762M Na+ in the solution
Explanation:
<em>2.07g of sodium iodide Is Dissolved In 50.ML Of A 0.30M...</em>
To solve this question we need to find the moles of sodium iodide, NaI, that are the same than the moles of sodium cation, Na+. The volume in liters of the solution is 0.050L. The molarity is:
<em>Moles NaI = Moles Na+ -Molar mass NaI: 149.89g/mol-</em>
2.07g NaI * (1mol / 149.89g) = 0.01381 moles NaI<em> = Moles Na+</em>
Molarity:
0.01381 moles Na+ / 0.0500L =
0.2762M Na+ in the solution
Answer:
yes
Explanation:
a solid melting into a liquid is a kind of a physical change and it definitely alters the appearance of the substance. A liquid evaporating into gas is also an example of a physical change.
Answer: Thus molarity of is 1.35 M
Explanation:
To calculate the volume of acid, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is
are the n-factor, molarity and volume of base which is KOH.
We are given:
Putting values in above equation, we get:
Thus molarity of is 1.35 M
Chemical properties describe how a material will react in a chemical reaction.
Physical properties describe such as color.
volume and mass are not properties, they are amounts. Density is a physical property because it s the ratio between mass and volume and does not change with amount.
Temperature is not a property.
Calories would be a chemical property because it describes chemical bonds. Energy is stored in the chemical bonds.
Chemical properties of the cake would be that it burns, another could be that it spoils, can be digested,