We first write the chemical equation:
2HgO → 2Hg + O₂
Next, we calculate the moles of HgO present:
moles = 3 / 216.59
moles = 0.014
Each mole of oxygen gas needs 2 moles of HgO to be produced.
Theoretical moles of oxygen gas produced = 0.014 / 2
= 0.007
Theoretical mass of oxygen = 0.007 x 32 = 0.224 grams
Percentage yield = actual yield / theoretical yield x 100
= 0.195 / 0.224 x 100
= 87.0%
Answer:
The correct option is 1, since by changing the partial pressures the gas pressures change, the gases go from the zones of higher partial pressure to the zones of lower partial pressure, an example of this is the homeostasis of the human pulmonary alveolus in gas exchange with CO2 and O2.
Explanation:
In the first it increases, in the second the volume is maintained, and in the third reaction it decreases.
Kinetic energy and mechanical energy I believe.
Answer:
B.
Explanation:
Some of the elements of the third-period and periods below can have expanded octet because they have d- sub-level.
We have 2 possible answers. A and B. Because lodine and chlorine. Sulfur and phosphorous are in the 3d or lower periods.
In the compound P2S5, where P forms 5 bonds.
Iodine and chlorine do not have enough difference in electronegativity to form compound ICl7.
So, the answer is B.