I see you have access to the internet. Google 'Kelvin to C', and input 251. You'll get -22.15.
<span>It is a buffer because pH = pKa of formic acid. </span>
The answer is Covenant bonds.
Answer:
The number of moles of AlBr3 = Molarity × Volume
= 0.400 × 0.700
= 0.28 moles
1 mole of AlBr3 gives 3 moles of Br- ions
That is
AlBr3 = Al3+ + 3Br-
Therefore, 0.045 moles of AlBr3 will yield 3 × 0.28 = 0.84 moles
Thus; they are 0.84 moles of bromide ions
