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gavmur [86]
2 years ago
13

add or subtract the following measurements. be sure each answer you enter contains the correct number of significant digits. −4.

520g1.3g
Chemistry
1 answer:
OLga [1]2 years ago
6 0

the correct number of significant digits

addition= -3.220g = 4 significant digits.

subtract= -5.820g = 4 significant digits

<h3>How are significant digits determined?</h3>
  • Use the following three rules to determine how many significant figures are present in a number:
  • Digits that are not zero are always important. Any zeros in the range of two significant digits are noteworthy.
  • ONLY in the decimal section are a final zero or following zeros important.
<h3>What are examples of significant digits?</h3>
  • Any two non-zero digits that are separated by a zero are important. For instance, the number 108.0097 has seven significant digits.
  • Every zero that is both to the right and left of a non-zero digit and the decimal point is never meaningful.
  • For instance, the number 0.00798 had three significant digits.

learn more about significant digits here

brainly.com/question/24491627

#SPJ4

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The number of atoms : N = 2.709 x 10⁴⁶

<h3>Further explanation</h3>

Given

4.5 x 10²² moles of CO₂

Required

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Solution

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Input the value :

N = 4.5 x 10²² x 6.02 x 10²³

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Hey there! 

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