Answer:
there was to much force for the glass and the glass broke
Explanation:
Answer:
0.4
Explanation:
Given parameters:
Mass of NaCl = 0.564g
Mass of KCl = 1.52g
Mass of LiCl = 0.857g
Unknown:
Mole fraction of KCl = ?
Solution:
First, find the number of moles of the given species;
Number of moles =
Molar mass of KCl = 39 + 35.5 = 74.5g/mol
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
Molar mass of LiCl = 7 + 35.5 = 42.5g/mol
Number of moles of KCl = = 0.02mol
Number of moles of NaCl = = 0.0096mol
Number of moles of LiCl = = 0.02mol
Sum of moles = 0.02mol + 0.0096mol + 0.02mol = 0.0496mol
Mole fraction of KCl = = 0.4
Explanation:
I am not understanding your question
Answer:
1. A
2. B and C
Explanation:
got it right in edg (see pic)
Answer:
5.57 x 10^24 atoms of Mg
Explanation:
1 mole = 6.023x10^23 items, by definition. Atoms, in this case.
0.25 moles would be (0.25mole Mg )(6.023x10^23 atoms Mg/mole Mg) = <u>5.57 x 10^24 atoms of Mg</u>