![subject](/tpl/images/cats/himiya.png)
Chemistry, 16.01.2021 07:50 jaasminfloress
Consider the picture of a gas pump. Which type of gasoline has the highest percentage of octane (the main component of gasoline)?
unleaded: 87 octane rating
mid-grade: 89 octane rating
premium: 91 octane rating
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 20:50
Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:30
Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 20:20
Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .
Answers: 3
You know the right answer?
Consider the picture of a gas pump. Which type of gasoline has the highest percentage of octane (the...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 23.11.2020 02:50
![question](/tpl/images/cats/himiya.png)
Chemistry, 23.11.2020 02:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.11.2020 02:50
![question](/tpl/images/cats/istoriya.png)
History, 23.11.2020 02:50
![question](/tpl/images/cats/health.png)
Health, 23.11.2020 02:50
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 23.11.2020 02:50
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
Physics, 23.11.2020 02:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.11.2020 02:50
![question](/tpl/images/cats/mat.png)
Mathematics, 23.11.2020 02:50
![question](/tpl/images/cats/mat.png)
Mathematics, 23.11.2020 02:50