Answer:
Kr- Dispersion Forces
H2O- Hydrogen Bonding
CHCI3- Dipole-Dipole Forces
HF- Hydrogen Bonding
C2H6- Dispersion Forces
HBr- Hydrogen Bonding Forces
Explanation:
Dispersion forces occurs in all substances. They are the dominant intermolecular interaction in all non polar substances such as C2H6 and Kr.
Hydrogen bonding occurs when hydrogen is bonded to a highly electronegative atom such as Cl, Br, O etc. It is the dominant intermolecular interaction in HF, HBr and H2O.
Dipole-Dipole interactions occur when a permanent dipole exists in a molecule such as in CHCI3
1. alizarin yellow R, color change at pH 10-12
2. thymol blue, color change at pH 2-4
3. methyl red, color change at pH 3-5
4. phenolphthalein, color change at pH 8-10
<span>5. bromothymol blue, color change at pH 6-8
These are the list of indicators that we have to choose from them and the correct answer will be 5) Bromothymol blue, due to color change at pH 6-8
Due to both HI is strong acid and Ba(OH)</span>₂ is strong base so the formed salt BaI₂ will has pH = 7 and the equivalence point will be 7 so it will be in the effective range of Bromothymol blue
Answer:
Final Concentration = 3.252M
Explanation:
Let's bring out the data mentioned in the question.
Time, t = 3s
Rate = 0.0840 M/s
Initial Concentration = 3M
Final Concentration = x
The formular relating these parameters is;
Rate = ΔConcentration / ΔTime
Upon solving for ΔConcentration, we have;
ΔConcentration = Rate * ΔTime
ΔConcentration = 0.0840 * 3
ΔConcentration = 0.252
But ΔConcentration = Final Concentration - Initial Concentration
Hence,
Final Concentration = ΔConcentration + Initial Concentration
Final Concentration = 0.252 + 3
Final Concentration = 3.252M
1mL=0.001L
so if you have 300mL, multiply that by 0.001 to give you 0.3L
