During mitosis, one cell creates: one identical cell
two non-identical cells
one non-identical cell
two identical cells

2 identical cells.

Explanation:

Mitosis - Most cells reproduce through a process called mitosis. During mitosis, one cell splits apart to form two new identical cells. This splitting apart is known as cell division. Mitosis begins when the nucleus makes duplicate copies of its chromosomes. This duplication ensures that each new cell will inherit all the traits of the original parent cell. The chromosomes move into pairs. Then, these chromosome pairs pull away from each other, allowing the cell to split apart. The two new cells are exactly like the original cell in their structure. Each new nucleus now contains all the original information about the cell's function. After growing, the cell may split again through mitosis.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%