Question

question 10 (1 point)
how many grams are 0.00771 moles of aspirin? report answer with correct
significant figures. do not use units in your response. do not use scientific notation.
your answer:
answer

Explanation:

Step1: Determine the molar mass of aspirin

The chemical formula of aspirin is \(C_9H_8O_4\).
The molar mass of \(C = 12.01\space g/mol\), \(H=1.008\space g/mol\), \(O = 16.00\space g/mol\).
Molar mass of aspirin \(M=(9\times12.01)+(8\times1.008)+(4\times16.00)\)
\(M = 108.09+8.064 + 64.00\)
\(M=180.154\space g/mol\)

Step2: Use the formula \(m=n\times M\)

Given \(n = 0.00771\space mol\) and \(M = 180.154\space g/mol\)
\(m=0.00771\times180.154\)
\(m = 1.39\) (rounded to three significant figures as \(0.00771\) has three significant figures)

Answer:

1.39