A student measures the time taken for 2.0 g of magnesium to dissolve in 50 cm3
of dilute sulfuric acid.
Which apparatus is essential to complete the experiment?
1 stop-clock
2 measuring cylinder
3 thermometer
4 balance
1, 2 and 4
2 )
1 and 2 only
3 )
1 and 4 only
4 )
2, 3 and 4
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