Answer:
The concentration of acetic acid in vinegar of that trial would be <u><em>greater than</em></u> the actual concentration.
Explanation:
"The titrator" contains the base solution (NaOH) with which the soution of vinegar (acetic acid) is being titrated.
Under the assumption that the tip of the syringe was not filled before the initial volume reading was recorded, part of the volume of the base that you release will be retained in the tip of the syringe, and, consequently, the actual volume of base added to the acetic acid will be less than what you will calculate by the difference of readings.
So, in your calculations you will use a larger volume of the base than what was actually used, yielding a fake larger number of moles of base than the actual amount added.
So, as at the neutralization point the number of equivalents of the base equals the number of acid equivalents, you will be reporting a greater number of acid equivalents, which in turn will result in a greater concentration than the actual one. This means that the concentration of acetic acid in vinegar of that trial would be greater than the actual concentration.
We will use the formula q = mCΔT.
where q = heat energy released.
m= mass.
C= specific heat of water.
ΔT= change in temperature.
Specific heat of water has not been given so we will just use the standard value of that which is 4.186J/g °C.
q = mCΔT.
q = 200 × 4.186 × (50 -25)
q = 200 × 4.186 × 25
q = 5000 × 4.186
q = 20, 930
The total amount of energy released is 20, 930 J
The two substances have different densities. Density can be affected by the temperature of a substance. Since they have to same volume but weigh differently, they have different densities. Remember, density = mass/volume
D
Avogadro's number allows us to measure the amount of atoms or molecules in one mole of a substance.
The answer is developer .
Chloe wants to lighten the color of her dark hair, which will require the use of both hair color and hydrogen peroxide.
Hydrogen peroxide (H₂O₂) is an example of a most commonly used developer in hair color.
Hydrogen peroxide lighten hair color, as it can dissolve darker pigment. According to the natural hair color and the length of time a person will leave hydrogen peroxide on hair, hair can turn somewhere on the color spectrum between caramel, orange and yellow.
