Scientist Virchow noticed that cells were diving and noticed that living cells only sprung from other living cells. That led him to create “cell theory”, stating that every organism is made out of cells, all cells spring from other cells, and all life functions occur in cells.
Given your dimensions I assume you're object is rectangular.
Volume is given by length x width x height
Volume = 5.54 cm x 10.6 cm x 199cm = <span>11686.076 cm^3 (cm cubed)</span>
Since there are 3 sig figs in all three dimensions given, and you are performing multiplication only, the answer should have 3 sig figs. You can either put it in scientific notation:
1.17 x 10^4 cm^3
or
11.7 litres
Answer:
0,051g of O₂ are consumed
Explanation:
The reaction of precipitation of Fe(II) is:
4Fe(OH)⁺(aq) + 4OH⁻(aq) + O₂(g) + 2H₂O(l) → 4Fe(OH)₃(s)
The moles of Fe(II) you have in 85ml of 0.075 M Fe(II) are:
0,085L×0,075M = 6,4x10⁻³ moles of Fe(II)
For the reaction, you require 4 moles of Fe(II) and 1 mol of O₂(g) to precipitate the iron. Thus, moles of O₂(g) you require are:
6,4x10⁻³ moles of Fe(II)× = 1,6x10⁻³ moles of O₂(g)
These moles are:
1,6x10⁻³ moles of O₂(g)× = <em>0,051g of O₂ are consumed</em>
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I hope it helps!
Answer:
And that means fish must be able to survive down here. This is due to a special property of water: the elasticity of H2O. We know that when the temperature sinks below freezing, water first contracts and then expands as it begins to turn to ice. Ice, being lighter than water, floats.
Explanation:
The property of water that allows fish to survive in a lake that is frozen over is the fact that ice is less dense than liquid water.