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Sagot :
The theoretical density of aluminum is 2.7 g/cm3. The experimental density is 25.6/9.1=2.8 g/cm3. The percent error is (2.8-2.7)/2.7*100%=3.7%≈4%. So the answer is (4) 4%.
Answer:
D. 4%
Explanation:
The density of aluminum from Reference Table S is 2.70 g/cm3. This is the accepted value. Use the formula for density from Reference Table T and substitute in the values from the question to find the calculated density of Al:
Now use the formula for percent error from Reference Table T, substituting the calculated (measured) and accepted values for the density:
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