In the reaction c + 02co2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. what mass of oxyger would be needed in the reaction?

18g

54g

72g

90g

Need hurry need the answers you. which chinese city is located just to the north and west of macao and hong kong? a shanghai b pusan c beijing d guangzhou. 2. what land feature between china and mongolia? a south china sea. b yellow sea c the himalayas d the gobi

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After considering options, a student using the problem-solving process should next