Question 1
1 pts
Which statement correctly compares an atom of Neon-20 and an atom of Sodium-...
Chemistry, 27.08.2020 18:01 bettinger6525
Question 1
1 pts
Which statement correctly compares an atom of Neon-20 and an atom of Sodium-23?
An atom of neon 20 has one fewer proton and one fewer neutrons than an atom of sodium-23.
An atom of neon-20 has one more proton and two fewer neutrons than an atom of sodium-23.
An atom of neon-20 has one fewer proton and two fewer neutrons than an atom of sodium-23.
An atom of neon-20 has one fewer proton and two more neutrons than an atom of sodium-23.
Answers: 3
Chemistry, 22.06.2019 15:30, vivianfling
Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium
Answers: 1
Chemistry, 22.06.2019 20:00, jalenevoyles
Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
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