sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear…

sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. which of these tools should she use for this purpose?\n○ an electronic balance\n○ a stopwatch\n○ a barometer\n○ a graduated cylinder

sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. which of these tools should she use for this purpose?\n○ an electronic balance\n○ a stopwatch\n○ a barometer\n○ a graduated cylinder

Answer

Brief Explanations:

An electronic balance measures mass, a barometer measures air - pressure, a graduated cylinder measures volume. A stopwatch is used to measure time in seconds, which is what Sian needs to measure the time it takes for the beaker's contents to change color.

Answer:

B. a stopwatch