The answer is 40.5.
Standard form is in answered or not in a different form.
So, you must solve this.
4.05 * 10 = 40.5
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The method used to separate oxygen from mercury oxide is by strong heating. In the lab mercury oxide is placed in strong glass test tube and strong heat applied to the test tube. Mercury oxide then undergoes a decomposition reaction to produce mecury and oxygen.
Antoine Lavoisier , the father of modern chemistry is the one credited as having proved the decomposition of mercuric oxide by heating, and that the result was production of mercury and oxygen.
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
Answer:
D. 27.099 x 10²³.
Explanation:
- It is known that every 1.0 mole of an atom contains Avogadro's no. (6.022 x 10²³) atoms.
<em>So, 4.5 mol of Hg will contain:</em>
(4.5 mol)(6.022 x 10²³) = 27.099 x 10²³ atoms.
<em>So, the right choice is: D. 27.099 x 10²³.</em>
Answer:
Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
