![subject](/tpl/images/cats/himiya.png)
Chemistry, 11.02.2020 02:50 angelicar4144
Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating that is based on a comparison with the combustion properties of isooctane. Gasoline usually contains an isomer of isooctane called tetramethylbutane (C8H18), which has an enthalpy of vaporization of 43.3 kJ/mol and a boiling point of 106.5Ā°C. Determine the vapor pressure of tetramethylbutane on a very hot summer day when the temperature is 38Ā°C.
A. 47.9 torr
B. 67.8 torr
C. 89.3 torr
D. 80.3 torr
E. 36.7 torr
Air (consisting mostly of nitrogen (N2), oxygen (O2), and argon (Ar)) dissolves in water due to?
A. dipole-induced dipole forces.
B. ionādipole forces.
C. dipoleādipole forces.
D. hydrogen bonding.
E. dispersion forces.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 02:40
Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 07:30
The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a Š½Š¾ reagent a 2. Š½,Š¾" thŠ¾ oh Š½Š¾Š½-Ń compound a. compound b. compound c .ch-Š¾h 1. reagent b "ŃŠ½Š¾ 2. reagent c Ńh oh compound e. compound d.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 09:20
Give the orbital configuration of the phosphorus (p) atom.
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.06.2019 00:50
The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as
Answers: 3
You know the right answer?
Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating that is based on a...
Questions
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.11.2019 02:31
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.11.2019 02:31