Sunspots are darker, cooler areas on the surface of the sun in a region called the photosphere. The photosphere has a temperature of 5,800 degrees Kelvin. Sunspots have temperatures of about 3,800 degrees K. They look dark only in comparison with the brighter and hotter regions of the photosphere around them. hope this helps
Part A -
Water has polar covalent bonds due to the difference in electronegativity between the oxygen and the hydrogen. When a solute such as an ionic compound dissolves, it's constituent ions are pulled apart from one another. Water then forms hydration shells around the pulled apart ions (look above for NaCl being dissolved in water).
This normally only occurs with ionic compounds such as salt and other polar molecules. This is because with non polar molecules, the water would be more strongly attracted to itself meaning it won't form hydration shells.
Part B -
In the example from part A in which an ionic substance is being dissolved in water, the ionic substance is the solute and the water is the solvent.
Answer:
1 - B) 2 - B) 3 - A)
Explanation:
1. C3H8 + 5O2 → 3CO2 + xH2O.. Find 'X'.
A) 3
B) 4
C) 5
D) 6
2. 4Al + 3O2 → xAl2O3. Find 'X'
A) 3
B) 2
C) 4
D) 5
3. FeCl3 + 3NaOH → Fe(OH)3 + xNACl. Find 'x'
A)3
B) 4
C)5
D)6
More in Next Question...
Answer:
Nitrogen
Explanation:
The electron configuration of nitrogen is:
1s2 2s2 2p3
which satisfies the diagram.
The volume of required will be 83.33 mL
<h3>Stoichiometric reactions</h3>
The equation of the reaction is as follows:
Mole ratio of reactants = 1:2
Mole of 50 mL, 0.05 M HBr = 0.05 x 0.05 = 0.0025 moles
Equivalent mole of = 0.0025/2 = 0.00125 moles
Volume of 0.015 M, 0.00125 moles = 0.00125/0.015 = 0.0833 L
0.0833 L = 83.33 mL
More on stoichiometric problems can be found here: brainly.com/question/6907332
#SPJ1