True, because diatomic elements (H2, O2, F2, Br2, I2, N2, Cl2) consist of only one element but are molecules with covalent bonds.
Answer:
D. all of these are chemical changes
Answer:
True
Explanation:
Because anything that has mass also has gravity
Avogadro's hypothesis says that 2.0 L of Cl2 (g) occupies the same volume as 2.0 L of CO2. So <span>(2.0L of Cl2 (g)
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Another name for biomas is renewable energy