Could you verify If I am right for Cambell Question

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How many molecules of DNA are in the pro-metaphase?
Two molecules of DNA since 1 chromosome = One double helix = 2 DNA molecules bonded by hydrogen bond.
How many molecules per chromosomes? There are 2 molecules 4 molecules after DNA replication.
How many double helices are there per chromosomes? 2 double helices
How many double helices are there per chromatid? : One double helix.