Answer is: molarity of hydrofluoric solution is 0.09 M.

Chemical reaction: HF(aq) + KOH(aq) → KF(aq) + H₂O(l).
V(HF) = 30.0 mL.
c(KOH) = 0.122 M.
V(KOH) = 22.15 mL:
c(HF) = ?.
From chemical reaction: n(HF) : n(KOH) = 1 : 1.
n(HF) = n(KOH).
c(HF) · V(HF) = c(KOH) · V(KOH).
c(HF) = c(KOH) · V(KOH) ÷ V(HF).
c(HF) = 0.122 M · 22.15 mL ÷ 30 mL:
c(HF) = 0.09 M.

8 0

3 years ago

Read 2 more answers

Soap is made of molecules with atoms that share electrons equally at one end and atoms that have a slight charge at the other en

kicyunya [14]

Which could be soluble in soap?

Answer: Out of all the options presented above the one that represents which substance is soluble in soap is answer choice C) both because soap is part polar and part nonpolar.

I hope it helps, Regards.

6 0

3 years ago

How many c atoms are in 2 mol of sucrose?

castortr0y [4]

12 carbon atoms<span>, 22 hydrogen atom, and 11 oxygen atoms in 2 moles of sucrose</span>

7 0

3 years ago

Using the symbol below/above determine the number of protons, neutrons, and electrons in the element.

malfutka [58]

Hi,
The correct answer is C.
Protons= 50 (because the atomic number of Sn is 50) —> The atomic number always represent the number of protons

Neutrons= 68 (if you want to find the number of neutrons, you need to do: atomic mass (118 in this case) - your number of protons (50)

Electrons= 46 (50 - 4)

7 0

3 years ago