Answer:
A
Explanation:
Carbon dioxide in the air
Potassium would not have similar properties because it is the alkali metals, not alkali earth metals
Answer:
0.234 moles
Explanation:
moles of Al2O3 = mass / molar mass
moles of Al2O3 = 23.87g / 102.0g/mol
moles of Al2O3 = 0.234 moles (to three significant figures)
<span>by performing more experiments</span>