Explanation:
Answer
( 58.3 mL ) (
0.789 g
1 mL
) (
1 mole
46 g
) = 1 mole C2H5OH
( 500 mL H2O ) (
1 g
1 mL
) (
1 mole
18 g
) = 27.8 mole H2O
The total moles = 1 mole C2H5OH + 27.8 mole H2O = 28.8 moles
The mole fraction =
moles C2H5OH
total moles
=
1 mole C2H5OH
28.8 total moles
= 0.035
The mole percent would be 3.5%.
What is the weight fraction?
Answer
( 58.3 mL ) (
0.789 g
1 mL
) = 46 g C2H5OH
( 500 mL H2O ) (
1 g
1 mL
) = 500 g H2O
The total mass = 46 g C2H5OH + 500 g H2O = 546 g
The mass fraction =
mass C2H5OH
total mass
=
46 g C2H5OH
546 total grams
= 0.084
The mass percent would be 8.4%.
What is the molarity?
Answer
The molarity =
moles C2H5OH
L of solution
=
1 mole C2H5OH
.5583 L
= 1.79 M
What is the molality?
Answer
The molality =
moles C2H5OH
kg of solvent
=
1 mole C2H5OH
0.5 kg H2O
= 2
The answer is B. Gases and particles in earth’s atmosphere scatter sunlight in all directions
Answer:
since small stone has less mass so the gravitational pull of the earth is lesser in case of this but this is not for the bigger stone as the gravitational pull of the earth is greater...
PLEASE MARK BRAINLIEST!!!!!
Answer:
The Rutherford model was made by Ernest Rutherford, to describe a atom. That is a brief explanation
Explanation:
