B) Li
Chemistry, 26.04.2021 01:30 itsyagirlgona21
Which metal will react spontaneously with a Cr3+ ion but not with a Ca2+ ion?
A) Co
B) Li
C) Mg
D) Pb
E) Metals will all react in the same way with these ions.
I know the answer is Mg, but why?
Answers: 2
Chemistry, 22.06.2019 05:50
Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.
Answers: 3
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Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon
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Chemistry, 22.06.2019 12:30
When a scientific theory has been tested and proved by the scientific community, it becomes a law
Answers: 2
Which metal will react spontaneously with a Cr3+ ion but not with a Ca2+ ion?
A) Co
B) Li
B) Li
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