5. at what phase of mitosis does the number of chromosomes double? will give brianlist

 Well, I believe that During this phase, the cell makes a variety of proteins that are needed for DNA replication. During S phase, which follows G1 phase, all of the chromosomes are replicated.

Hope this helps. 

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Sugar and water are chemically combined.(a solution is chemically combined while a mixture is mixed together without bonding the molecules)

Gallium melts near room temperature and has one of the largest  liquid  ranges of any metal, so it has found use in high temperature thermometers.