Answer:
The correct answer is - 3.012×10^23 molecules
Explanation:
The number of molecules is present in any mole of an element or compound are the same. To find the molecules you need to multiply the number of the moles of the compound by Avogadro's number:
Moles are calculated from the molecular weight, for AlF3
= 26.98 + 3×19
= 26.98 + 57
= 83.98
Then moles in 42 grams:
= 42/83.98
= 0.5001190 moles
Now the number of molecules = moles*Avogadro's number
= 0.500110×6.022×10^23
= 3.011×10^23 molecules
Answer:
the funnel with the filter paper
Explanation:
When the mixture of solution is poured through the funnel with filter paper, the liquid solution can pass through the filter paper and gets collected in the beaker (filtrate) while the solid products are too large to pass through the filter paper, so they remain on the funnel (residue).
With this tool, the solid product could be separated from the mixture.
Explanation:
electrons in the highest energy orbitals which are able to contribute to Bonding are valence electrons,....... please mark me brainiest
Answer:
wdym?!!
Explanation:
giraffe eats leaves that grows on tall trees with its long neck
Answer:
Explanation:
protons, neutrons, and electrons.
