Chemistry, 31.01.2021 01:10 ElizabethMartin6477
10 points!! Please answer only if you know the correct answer I’m already failing the class :/
How many moles are represented by 9.34 x 1021 sodium atoms?
a . 1.25 x 10^-2 moles
b. 1.55 x 10^-3 moles
c. 1.55 x 10^-2 moles
d. 1.55 moles
Answers: 2
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Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.
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Write the overall equation for the reaction for lithium battery
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The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?
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Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
10 points!! Please answer only if you know the correct answer I’m already failing the class :/
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