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FinnZ [79.3K]
2 years ago
8

*Need help asap

Chemistry
2 answers:
Oliga [24]2 years ago
7 0
A. MnS(s) + 2H + (aq) > Mn2 + (aq) + H2S(g)
BlackZzzverrR [31]2 years ago
3 0

Answer:

I believe that your answer is A.

Explanation:

Hope this helps!

=)

(please let me know if I am correct)

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The chemical equation is Mg(s) + O2(g) → MgO(s)
vredina [299]

Answer:

The magnesium will burn until consumed entirely. There is much more oxygen available in the atmosphere than needed to consume the magnesium. Thus the magnesium is the limiting reactant because it determines the amount of product formed.

Explanation:

Mg produces less amount of MgO than O2; therefore Mg is the limiting reagent. O2 produces more amount of MgO than Mg; therefore O2 is the excess reagent.

4 0
2 years ago
After 11.5 days, 12.5% of a sample of radon-222 that originally weighed 42g remains. What is the half-life of this isotope?
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Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value.  The equation to describe the decay is
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3 years ago
Which statement explains how the periodic table is arranged?. . A.. The periodic table is arranged by the radioactivity levels i
vova2212 [387]
The periodic table is arranged by the outermost electrons of the elements and this is the statement among the given statements that explains how the periodic table is arranged. The correct option among all the options that are given in the question is the second option or option "B".
7 0
2 years ago
Read 2 more answers
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TiliK225 [7]

Answer:

one is across

Explanation:

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Can scientific laws be proved wrong? Why or why not?
astra-53 [7]

Answer:

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Explanation:

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