How does a white dwarf compare to a Red Giant in both brightness and temperature?
10 points
Super Giants
Betelgeuse
Vega
Giants
Absolute Magnitude
Our Sun
Main
Sequence
Alpha
Centauri B
+5
+10
Sirius B
White
Dwarfs
+15
25,000
3,000
10,000 7,000 5,000
Surface Temperature (K)
white dwarf

Ummm idk sorry

Explanation:

yes

explanation:

search chemistry final b exam in google and a site called quizlet will pop up

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%