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Sagot :
Answer:
386.75 grams
Explanation:
You can use dimensional analysis to help you solve for this question
1. set up a proportion
x grams
4.25 mol x x mole
2. to find the amount of grams/mol that are in NiS we find the gram formula mass (mass of all the atomic masses of each element)
Ni- 59 grams
S- 32 grams
add these together and you get 91 g/mol
3. now plug in the values and multiply across
91 grams
4.25 mol x 1 mole
when you multiply across this is equal to 386.75 grams
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