The number of moles of O2 in 10.6 grams of Na2CO3: A. 0.1 moles
B. 0.3 moles
C. 0.2 moles
D. None of these

Explain please

Is this a single replacement reaction or there is no

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Select the most likely product for this reaction: koh(aq) + co2(g) – ? k2co3(aq) + h2o(1) k(s) + h2(g) + o2(g) k(s) + co3(9) +h2