The volume of oxygen produced can be measured using the gas syringe method. The gas collects in the syringe, pushing out against the plunger. The volume of gas that has been produced can be read from the markings on the syringe.
Formula Calcium chroride:
hope this helps!.
<span>A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.</span>
Chlorine.
Chlorine is the 17th element and has a mass of 35.
2 Na + 2 H2O → 2 NaOH + H2 (balanced equation)
The answer would be 2, since 2 in the coefficient of both Na and NaOH
