A chemical equation is your answer. Please correct me if I am wrong.
Answer:
The mole fraction composition of the liquid is :
Mole fraction of butane, pentane and hexane are 0.3638,0.3908 and 0.2454 respectively.
Explanation:
Mass of the liquid mixture = 200 g
Percentage of butane = 30%
Mass of butane = 
Moles of butane = 
Percentage of pentane= 40%
Mass of pentane= 
Moles of pentane= 
Percentage of hexane = 100% - 30% - 40% = 30%
Mass of hexane = 
Moles of hexane = 
Mole fraction of butane, pentane and hexane : 



Answer:
+4
Explanation:
, Oxygen always works with -2. You multiply with the number of atoms -2*3= -6
S=x+(-6)=-2
x-6=-2 -> x= -2+6 -> x= +4
102 grams.
Equation:
Quantify of heat = mass x specific heat x difference in temperature
We have: quantity of heat : 2300J
specific heat: .449 J/g
difference in t: 80 - 30 = 50
Solve for mass: 2300 = mass x 0.449 x 50
mass = 102.449
2 sig-figs --> 102 grams
Answer:
B
Explanation:
J.J. Thomson
The plum pudding model is an early 20th century model of an atom. It was later found to be wrong. It was proposed by J.J. Thomson in 1904, after the electron had been discovered, but before the atomic nucleus was discovered.