C sounds like the right answer in this question
Equal volumes of equal concentrations of strong acid and strong base are mixed. Because the volumes and molarities are equal, the number of mole NaOH and HCl are equal.
From reaction
HCl + NaOH ---> NaCl +H2O
we can see that if number of moles HCl and NaOH are equal, they will react completely, and no acid or base is going to be in solution anymore.
So, pH=7.
Answer:
Yes you are correct
Explanation:
But the spelling is black amu
Answer:
The freezing point of the solution is -4.46 °C
Explanation:
Step 1: Data given
Number of moles MgBr2 = 0.80 moles
Mass of water = 1.00 kg
Water has a freezing point depression constant of 1.86°C.kg/mol
Freezing point of water = 0°C
Step 2: Calculate the freezing point of the solution
ΔT = i * Kf * m
⇒ΔT = the freezing point depression = TO BE DETERMINED
⇒with i = the can't Hoff factor of MgBr2 = 3
⇒with Kf = the freezing point depression constant of 1.86°C/molal
⇒with m = the molality = 0.80 moles / / 1.00 kg = 0.80 molal
ΔT = 3 * 1.86 °C/molal * 0.80 molal
ΔT = 4.46 °C
Step 3: Calculate the freezing point of the solution
0°C - 4.46 °C = -4.46 °C
The freezing point of the solution is -4.46 °C
Answer:
circulatory and respiratory systems
Explanation:
respiratory system brings in/out the oxygen/carbon dioxide
circulatory system moves the oxygen throughout the body via blood cells
