47. a student constructs a model for comparing
the masses of subatomic particles. the
st...
Chemistry, 25.11.2019 20:31, kiragor2545
47. a student constructs a model for comparing
the masses of subatomic particles. the
student selects a small, metal sphere with
a mass of 1 gram to represent an electron.
a sphere with which mass would be most
appropriate to represent a proton?
(1)1g (3) 20008
(4) 2000 g 47
09
Answers: 2
Chemistry, 21.06.2019 13:00, salvadorperez26
Asolution has a ca2+ concentration of 0.049 m and an f- concentration is 0.147 m at equilibrium. the value of ksp for caf2 at 25°c is 4.0 x 10-11. will this solution form a precipitate? yes no
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How are isotopes of the same chemical element alike? how are they different?
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Answers: 3
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