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Anon25 [30]
3 years ago
12

Write the number 345 in scientific notation, with the same number of significant figures:

Chemistry
1 answer:
uranmaximum [27]3 years ago
8 0

Answer:

3.45 x 10^2

Explanation:

345= 3 SF

3.45 x 10^2= 3 SF

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Determine the mass of SO₂ that contains 6.075 × 10^26 S atoms.​
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Avogadro's law states that in a mole of any substance, there are 6.022 \times 10^{23} atoms. This means that in the given sample, there are

\frac{6.075 \times 10^{26}}{6.022 \times 10^{23}}=1008.8010627 \text{ mol}

  • The atomic mass of sulfur is 32.06 amu.
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So, the atomic mass of sulfur dioxide is

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(64.0588)(1008.8010627)=\boxed{64620 \text{ g (to 4 sf)}}

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