Answer:
1. molecules of CO₂
2. 10⁴ molecules of H₂O
3. 8.75×10³² molecules of C₆H₁₂O₆
Explanation:
1. molecules of CO₂
2. 10⁴ molecules of H₂O
3. 8.75×10³² molecules of C₆H₁₂O₆
There are ___ atoms of oxygen in 300 molecules of CH3CO2H a) 300 b) 600 c) 150 d) 3.6 x 10^36
1 answer:
<u>Answer:</u> The correct option is b) 600
<u>Explanation:</u>
Molecules are formed when two atoms of same or different elements combine together.
Atoms are the smallest unit of matter that combines to form a compound.
For the given chemical compound,
Given number of molecules = 300 molecules
In 1 mole of the given chemical compound, there are 2 atoms of carbon, 4 atoms of hydrogen and 2 atoms of oxygen
Number of atoms of oxygen =
Number of atoms of oxygen =
Hence, the correct option is b) 600
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Answer:
Three hydrogen atoms to form PH₃.
Explanation:
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In this case, since the elements belonging to the nitrogen family (N, P, As, Sb and Bi) show five valence electrons, because there are five electrons at their outer shell, it is clear that if phosphorous bonds with hydrogen, it is going to require the same amount of oxygen atoms (3) because elements having five valence electrons need 3 bonds in order to attain the octet (5+3=8).
Therefore the compound would be:
Which is phosphine.
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