Answer:
Reaction rate
Explanation:
We are told that Ben observes how quickly some dry wood is burning in a campfire.
This is an example of reaction rate because it tells us the speed i.e. how fast the dry wood is reacting with the camp fire.
Answer:
3.46 x 10²⁴ molecules.
Explanation:
- <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>
<em><u>Using cross multiplication:</u></em>
1.0 mole of HBr → 6.022 x 10²³ molecules.
5.75 mole of HBr → ??? molecules.
∴ The no. of molecules of HBr are in 5.75 mol = (6.022 x 10²³ molecules) ( 5.75 mole) / (1.0 mol) = 3.46 x 10²⁴ molecules.
Answer:
80.2
Explanation:
we subtract 18.2 from the total percentage which is 100%
Explanation:
C₄H₈O₂ C₂H₄O
C₄H₁₂O₄ CH₃O
C₂H₁₀O₂ CH₅O
The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio of the atoms of the different elements that makes up a compound.
The molecular formula is the true formula of the compound. It expresses the actual number of moles of atoms of the different elements present in a molecule of the compound.
C₄H₈O₂ C₂H₄O
4: 8 : 2 divided by 2 gives 2: 4 : 1
C₄H₁₂O₄ CH₃O
4: 12: 4 divided by 3 gives 1: 3: 1
C₂H₁₀O₂ CH₅O
2: 10: 2 divided by 2 gives 1: 5: 1
learn more:
Empirical formula brainly.com/question/2774727
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