What is the complete ionic equation for H2SO4(aq) + Cal2(aq) + CaSO4(s) + 2Hl(aq)?
O A. 2H+ + SO42- + Ca2+ + 21 → Ca2+ + SO42- + 2H+ + 21-
B. 2H+ + SO42- + Ca2+ + 21 → CaSO4 + 2H+ + 21-
C. H*+ SO42- + Ca2+ + 21 → CaSO4 + H+ + |
D. SO42- + Ca2+ → CaSO4

answer: c

step-by-step explanation: because you don't have to draw a point of intersection. couldyou give me brainliest?

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which expression represents the approximate length of bc?

step-by-step explanation:

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.