hoverboardleway hoverboardleway

08-01-2020
Chemistry

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If 156 grams of chromium react with an excess of oxygen, as shown in the balanced chemical equation below, how many grams of chromium oxide can be formed? (1 point)
4Cr + 3O2 yields 2Cr2O3

78 grams

104 grams

228 grams

912 grams

Respuesta :

rcukierkorn rcukierkorn

08-01-2020

228 grams
start with mass of Cr multiply by molar mass of Cr mole to mole ratio between Cr and Cr2O3 times molar mass of Cr2O3

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