Answer: to see if the matter is a compound, mixture, or element.
Explanation:
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Answer:indicates the number of electrons in an atom.
Explanation:
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The answer is D, location, because you'd have moved spots that could be altered.
Density = mass/volume
substituting the given values :
We get :
D = 37.4 / 2.2 x 10^3
D = 0.017 grams/liter
Answer:
3.612 × 10^24 molecules
Explanation:
The balanced chemical equation in this question is given as;
2Al + 6HCl → 2AlCl3 + 3H2
Based on the equation, 2 moles of Aluminum (Al) is needed to react with 6 moles of HCl
Since 1 mole of a substance is equal to 6.02 × 10^23 molecules;
This means that, according to the question, 6 moles of HCl needed to react with 2 moles of Al will contain;
6 × 6.02 × 10^23 molecules
= 36.12 × 10^23
= 3.612 × 10^24 molecules
In a nutshell, 3.612 × 10^24 molecules of HCl would react with 2 moles of Al.
