Answer:
The water molecule is comprised of two hydrogen (H) atoms and one oxygen atom, oxygen atom has 8 electrons, and each H has 1 electron. The H atoms bond to the oxygen by sharing a pair of electrons in what is called a covalent bond. In each pair of shared electrons, one electron is contributed by the H (black) and one from the oxygen (red).
Explanation:
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The correct answer is A. electrons can only jump from one energy level to the next and can't go anywhere in between. This makes it so that the amount of energy an electron can absorb and release are quantized which makes it so that they can only put out light that has certain energies.
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Answer: neutrons have no charge so this might be true
Explanation:
The answer is B. making sawdust.
Because, to make sawdust you have to shred wood and you can't reverse that. Therefore, making sawdust is irreversible.
Answer:
C. 6 E23 atoms Cl2
Explanation:
S.T.P:
∴ T = 25°C ≅ 298 K
∴ P = 1 atm
ideal gas:
∴ R = 0.082 atm.L/K.mol
∴ V = 22.4 dm³ = 22.4 L
⇒ mol (n) = PV/RT
⇒ n Cl2(g) = ((1 atm)(22.4 L)/(0.082 atm.L/K.mol)(298 K))
⇒ n Cl2(g) = 0.9166 mol
⇒ atoms Cl2(g) = (0.9166 mol)*(6.022 E23 atoms/mol)
⇒ atoms Cl2(g) = 5.52 E23 atoms ≅ 6 E23 atoms