Answer:
0.30 M is the total concentration of ions in a 0.10 M solution of barium chloride.
Explanation:
Concentration of solution of barium chloride = 0.10 M = 0.10 mol/L
1 Mole of barium chloride gives 1 mole of barium ions and 2 moles of chloride ions.
Concentration of barium ions in solution = [x]
Concentration of chloride ions in solution = [y]
Total concentration of ions in the solution : [x]+[y]
0.10 mol/L + 0.20 mol/L = 0.30 mol/L
0.30 M is the total concentration of ions in a 0.10 M solution of barium chloride.
Hi there!
We can use the following conversions to solve:
Total mass --> amount of mols --> amount of atoms (Avogadro's number)
Begin by calculating the amount of boron trifluoride in 3.61 grams:
3.61 g * (1 mol BF₃ / 67.8 g) ≈ 0.0532 mol BF₃
Use avogadro's number to convert:
0.0532 mol * 6.02× 10²³atoms / 1 mol = 3.203 × 10²² atoms
Answer :
(a) The given number in 2 significant figures will be,
(b) The given number in 4 significant figures will be,
(c) The given number in 3 significant figures will be,
Explanation :
Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
(a) The given number 00003554 converted into 2 significant figures.
In 00003554, there are 4 significant figures. Now we have to convert it into 2 significant figures.
The given number in 2 significant figures will be,
(b) The given number 35.8348 converted into 4 significant figures.
In 35.8348, there are 6 significant figures. Now we have to convert it into 4 significant figures.
The given number in 4 significant figures will be,
(c) The given number 22.4555 converted into 3 significant figures.
In 22.4555, there are 6 significant figures. Now we have to convert it into 3 significant figures.
The given number in 3 significant figures will be,