In this question, you mainly had to do the conversion of mg - g
As the question says, your experimenr requires only 0.85g of NaOH and your inventory shows you have 1500 mg of NaOH.
So, here you just had to convert 1500mg to grams and that becomes 1.5 g, more than what your experiment requires.
So, you need only 0.85g of NaOH and you have 1.5g of NaOH with you. That means you have enough NaOH to complete your experiment.
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