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Dafna11 [192]
3 years ago
12

What is the solution to the problem expressed to the correct number of significant figures?

Chemistry
1 answer:
Fed [463]3 years ago
8 0

Answer:

(102 900 ÷ 12) + (170 × 1.27) = 8800

Step 1. Evaluate the expressions inside the parentheses (PEMDAS)

102 900 ÷ 12 = 8575

170 × 1.27 = 215.9

In multiplication and division problems, your answer can have no more significant figures than the number with the fewest significant figures.

Thus, the underlined digits are not significant, but we keep them in our calculator to avoid roundoff error.

Step 2. Do the addition (PEMDAS).

  8575

+    215.9

= 8790.9

Everything that you add to an insignificant digit gives an insignificant digit as an answer.

Thus, the underlined digits are not significant.

We must drop them and round up the answer to 8800.

Explanation:

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Explanation:

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The energies of the bonds broken in a certain reaction are greater than the energies of the bonds formed. Which one of the follo
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a. The reaction is endothermic.

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4 0
2 years ago
Draw structures from the following names, and determine which compounds are optically active:(c) 1,2-dibromo-2-methylbutane
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It has  chiral center.

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Learn more about chiral center here:

brainly.com/question/9522537

#SPJ4

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