It would take 8 antacid tablets to produce 120 mL of CO2 gas.
Answer: -
37.5 g of NaCl are in 250 g of a 15.0% (by weight) solution.
Explanation: -
Total mass = 250 g
Percentage of NaCl = 15.0 %
= 
Thus
= 
Number of grams of NaCl present = 
= 37.5 g
Answer:
Aluminium + oxygen = almininum oxide
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