Answer:
7.8 moles are needed.
Explanation:
Given data:
Mass of oxygen produced = 125 g
Number of moles of mercury oxide needed = ?
Solution:
Chemical equation;
2HgO → 2Hg + O₂
Number of moles of oxygen:
Number of moles = mass/ molar mass
Number of moles = 125 g/ 32 g/mol
Number of moles = 3.9 mol
Now we will compare the moles of oxygen with mercury oxide.
O₂ : HgO
1 : 2
3.9 : 2×3.9 = 7.8 mol
The phase is called cytokinesis.
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The answer is ovulation.
Ovulation is the process of releasing of the mature egg (Greek ovum) from the ovaries. In humans, the mature graffian follicles rupture and the secondary oocyte is released. The secondary oocyte is now ready to be fertilized by the sperm.
Answer:
900 nanometer (nm)
Explanation:
Given that,
Length of a bacterial cell = 0.9 micrometer (µm)
There is a direct relationship between the nanometer and the micrometer scale,
It is that 1 micrometer (μm) = 1000 nanometer (nm)
Therefore, 0.9 μm = 900 nm
Thus, the length of the given bacterial cell is 900 nanometer (nm).
