Answer:
1.61%.
Explanation:
The following data were obtained from the question:
Measured mass = 3.15 g.
Actual mass = 3.10 g
Percentage error =.?
The percentage error of the group can be obtained by using the following equation below:
Percentage error = |Actual mass – Measured mass| / Actual mass × 100
Percentage error = |3.10 – 3.15| /3.10 × 100
Percentage error = 0.05/3.1 × 100
Percentage error = 5/3.1
Percentage error = 1.61%
Therefore, the percentage error of the group is 1.61%.
<span>Part A:
Molar mass luminol = 177g/mol
10g = 10/177 = 0.0565 mol Luminol
Dissolved in 75mL solution = 0.075L
Molarity = 0.0565/0.075 = 0.753M solution
Part B.
There should be no problem with this part If .0L contains 3.0*10^-2 mol Luminol, then 2.0L will contain 2*3.0*10^-2 = 6.0*10^-2 mol
Part C:
Use equation:
M1V1 = M2V2
0.753 *V1 = (3.0*10^-2) * 1000
V1 = 30/0.753
V1 = 39.8 mL of stock solution contains 3.0*10^-2 mol Luminol.</span>
Answer:
Chlorine exists as gaseous state while potassium chloride as a solid
Answer:
A.
as the sum of the energy of the products and the energy of the reactants.
Explanation:
Because the sun is on top of the energy.
Answer:
CH3 – CH – CH – CH2 – CH – CH3
| | |
CH3 CH2 CH3
|
CH3
Explanation:
3 - etil - 2, 5 - dimetilhexano