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siniylev [52]
3 years ago
14

What is the last step in the Scientific method?

Chemistry
2 answers:
rosijanka [135]3 years ago
4 0
The last step in conclusion.
AURORKA [14]3 years ago
4 0
No it’s not it’s repeat
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The answer to this is Codon. 
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Classify blood as a mixture or a pure substance. if blood is a mixture, classify it as either heterogeneous or homogeneous. if b
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Blood is a heterogeneous mixture. 

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What is the volume of 0.128 mol of nitrogen dioxide gas at STP?
Natali5045456 [20]

Answer:

  B)  2.87 L

Explanation:

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3 years ago
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S8 +O2 = SO8 <br><br> Given 80 mols of product, find the amount of each reactant in mols.
notsponge [240]

Answer:

10 moles of S₈

320 moles O₂

Explanation:

  • S₈ +O₂ → SO₈

The balanced equation is:

  • S₈ + 32O₂ → 8SO₈

Now we can convert moles of SO₈ (the product) into moles of each reactant, using the <em>stoichiometric coefficients of the balanced reaction</em>:

  • 80 mol SO₈ * \frac{1molS_8}{8molSO_8} = 10 mol S₈
  • 80 mol SO₈ * \frac{32molO_2}{8molSO_8} = 320 mol O₂

In order for 80 moles of SO₈ to be produced, 10 moles of S₈ need to react with 320 moles of O₂.

3 0
3 years ago
What is the half-life of a radioisotope if it decays to 25% of its original activity in 7 yr?
Pepsi [2]

Answer:

3.5 yrs

Explanation:

If a sample has decayed to 25%, this means 2 half-lives have passed. We are given this is equal to 7 yrs, and it follows that one half life is 3.5 yrs.

7 0
2 years ago
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