The correct answer:C) NaCl(s)
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Answer:
1.2×10²³ atoms.
Explanation:
Data obtained from the question include:
Mole of propanone = 0.20 mole
Number of atoms of propanone =.?
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.
This implies that 1 mole of propanone also contains 6.022×10²³ atoms.
Thus, we can obtain the number of atoms in 0.20 mole of propanone as illustrated below:
1 mole of propanone contains 6.022×10²³ atoms.
Therefore, 0.20 mole of propanone will contain = 0.2 × 6.022×10²³ = 1.2×10²³ atoms.
Thus, 0.20 mole of propanone contain
1.2×10²³ atoms.
Percentage recovery gives us an idea of the amount of pure substance recovered after the chemical reaction. Percentage recovery can be more than 100 % or less than 100 %. Usually, in any experiment performed the weight percentage recovery will be less than 100. Percent recovery values greater than 100 show that the recovered compound is contaminated.
Amount of acetaminophen initially taken = 350 mg
Amount of acetaminophen obtained after recovery =185 mg
![Weight percentage recovery =\frac{mass recovered}{mass originally taken}*100](https://tex.z-dn.net/?f=Weight%20percentage%20recovery%20%3D%5Cfrac%7Bmass%20recovered%7D%7Bmass%20originally%20taken%7D%2A100)
= ![\frac{185 mg}{350 mg}*100](https://tex.z-dn.net/?f=%5Cfrac%7B185%20mg%7D%7B350%20mg%7D%2A100)
= 52.9%
Answer:
2.
Explanation:
This should be right hopefully it is!
Answer:
It kind of is logical so my answer is yes