Answer:
[HCl] = 4.54 M
Explanation:
14.2 % by mass is 14.2 g in 100 g of solution.
Let's calculate the moles of our solute, HCl
14.2 g / 36.45 g/mol = 0.389 mol
Molarity is mol/L (moles of solute in 1L of solution)
Let's determine the volume of solution with density
Solution density = Solution mass / Solution volume
Solution volume = Solution mass / Solution density
Solution volume = 100 g / 1.1684 g/mL → 85.6 mL
For molarity, we need the volume in L. Let's make the unit change.
85.6 mL . 1 L/1000mL = 0.0856L
Molarity is 0.389 mol / 0.0856L → 4.54 M
Answer:
A
Explanation:
By nature, a hybrid has one dominante allele and one recessive allele
Hey there! :
Molar mass:
Al = 26.9815 g/mol
AlCl₃ = 133.3405 g/mol
Reaction stochemistry ,calculates the mass of AlCl3 produced
2 Al + 3 Cl₂ = 2 AlCl₃
2 * 26.9815 g Al --------------------- 2 * 133.3405 g AlCl₃
8.82 g Al ------------------------------- ( mass of AlC₃ )
mass of AlCl₃ = ( 8.82 * 2 * 133.3405 ) / ( 2 * 26.9815 )
mass of AlCl₃ = 2352.12642 / 53.963
<u>mass of AlCl₃ = 43.58 g of AlCl₃</u>
Hope this helps!