The observers which would experience the same apparent solar time are observer B and observer E. This means the correct response as per the full question indicated in the attached document is number 2.
<h3>Types of Solar Time</h3>
There are two types of Solar Time. They are:
- Apparent Solar Time and
- Mean Solar Time
<h3>
What is Apparent Solar Time?</h3>
Apparent solar time refers to the time of the day that is shown by the hour angle of the sun. It is also defined as the sun's position in the sky going by direct observation. Direction observation of the sun to determine Solar Time is possible using a Sundial.
See the link below for more about Apparent Solar Time:
brainly.com/question/6336054
Only test 2 will indicate a chemical property of sodium bicarbonate. The other tests are done to confirm its physical properties. Vinegar, or acetic acid, CH3COOH, reacts with NaHCO3 to form sodium acetate, carbon dioxide and water. The reaction fizzes due to the release of CO2. Test 1 shows the solubility of NaHCO3 in water, while test 3 tests for its melting point. Both are physical properties.
B) A change in color occurs.
A reaction in which Oxygen (O₂) is produced from Mercury Oxide (HgO) would be a decomposition reaction.
2HgO → 2Hg + O₂
If 250g of O₂ is needed to be produced,
then the moles of oxygen needed to be produced = 250g ÷ 32 g/mol
= 7.8125 mol
Now, the mole ratio of Oxygen to Mercury Oxide is 1 : 2
∴ if the moles of oxygen = 7.8125 mol
then the moles of mercury oxide = 7.8125 mol × 2
= 15.625 mol
Thus the number moles of HgO needed to produce 250.0 g of O₂ is 15.625 mol