Answer:9
Explanation:
F is Flourine on the periodic table; the atomic number of Flourine is 9
caution: when you say “20 F” your meaning is unclear. regardless of what you mean, though, the atomic number of F is 9
Answer: 1082 g of carbon dioxide are produced for every 350 grams of octane reacted in the engine
Explanation:
To calculate the moles :
According to stoichiometry :
As 2 moles of octane give = 16 moles of
Thus 3.07 moles of octane will give = of
Mass of
Thus 1082 g of carbon dioxide are produced for every 350 grams of octane reacted in the engine
Answer:
B. Molecules of different types of atoms that are not attracted to each other.
Explanation:
On a broad basis, matter can be subdivided into pure or distinct substances and impure substances (mixtures);
Pure substances are distinct substances having the following properties:
- All parts are the same throughout
- Composition is definite
- They cannot easily be separated or broken down into simpler substances by physical means.
- Separation by physical methods is not easy.
- They have a unique set of physical properties.
From this criteria, we see that the second choice is nullified. This is because pure substances have their molecules attracted to each other.