Answer:
The length of the bond is determined by the number of bonded electrons (the bond order). The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length. Generally, the length of the bond between two atoms is approximately the sum of the covalent radii of the two atoms.
I'm not exactly sure which one but I do know that an acid and a base react in a aqueous solution to form water, so i would probably eliminate the ones that aren't aqueous solutions.
a. We first calculate the moles of sucrose needed
moles sucrose = 0.250 M * 0.25 L
moles sucrose = 0.0625 mol
The molar mass of sucrose 342.3 g/mol, so the mass of
sucrose needed is:
mass sucrose = 0.0625 mol * 342.3 g/mol
mass sucrose = 21.4 grams
So simply dissolved about 21.4 grams of sucrose in 250 mL
solution.
b. We use the formula:
M1 V1 = M2 V2
1.50 M * V1 = 0.100 M * 0.350 L
V1 = 0.0233 L = 23.3 mL
So simply take 23.3 mL of solution from 1.50 M then dilute
it with water until 350 mL to make 0.100 M.
Answer:
1) D. Dissolved Molecule
2) C. 11.30 M
Explanation:
<u><em>Q1:</em></u>
- Glucose (C₆H₁₂O₆) is a non-polar molecule.
- When it is dissolved in water, it will be a dissolved molecule.
- It can not be ionized in water.
- So, the right choice is: <em>D. Dissolved molecule.</em>
<u><em>Q2</em></u>:
- The molarity is the no. of moles of dissolved solute in a 1.0 L of the solution.
<em>M = (n)solute (1000/V (mL) of the solution)</em>
n of LiCl = 2.60 mol, V = 230.0 mL.
∴ M = (n)solute (1000/V (mL) of the solution) = (2.60 mol)(1000)/(230.0 mL) = 11.30 M.
