Answer:
Molarity of the solution is 0.26 M and molality of the solution is 0.28 m
Explanation:
Molar mass of benzoic acid = 122.12 g/mol
So, 14. g of benzoic acid = of benzoic acid = 0.11 mol of benzoic acid
We know, density is the ratio of mass to volume
So, mass of 425. mL of solvent =
Molarity is defined as number of moles of solute dissolved in 1000 mL of solution
Here solute is benzoic acid and total volume of solution is 425. mL
So, molarity of solution =
Molality is defined as number of moles of solute dissolved in 1000 g of solvent
So, molality of solution =
Enter a chemical formula to calculate its molar mass and elemental composition: Notice: your ... as a zero '0' Molar mass of Na2Co3*10H2O<span> is 402.9319 g/mol ...</span>
Answer:
The atomic mass of lead is: 207.216 u
Explanation:
data Isotopes mass percent
1 203.97302 1.4
2 205.974444 24.1
3 206.97587 22.1
4 207.97663 52.4
atomic mass = (203.97302x 0.014) + (205.974444 x 0.241) +
(206.97587 x 0.221) + (207.97663 x 0.524)
atomic mass = 2.856 +49.639 + 45.742 + 108.979
atomic mass = 207.216 u
For this you will need electronegativity(χ). χ(Ca)=1, χ(Cl)=3, χ(Fe)=1,8, χ(O)=3,5, χ(H)=2,1, χ(S)=2,5, χ(F)=4. then you calculate difference of electronegativity between 2 atoms, where is highest, that is higly polar bond. So it is Ca-O bond Δ<span>χ=2.</span>