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In-s [12.5K]
2 years ago
15

Choose all of the answers that describe beneficial microorganisms.

Chemistry
1 answer:
REY [17]2 years ago
7 0

Answer:

1, 4,3,2

Explanation:

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What causes an earthquake?
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Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundances of 27.9769 amu (92.2
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If a 0.4681 g Mg strip reacts with 0.650 M HCl in a 139.3 mL flask at 25oC, what is the minimum volume (mL) of HCl needed to com
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The reaction between the magnesium, Mg, and the hydrochloric acid, HCl is given in the equation below,

    Mg + 2HCl --> H2 + MgCl2

The number of moles of HCl that is needed for the reaction is calculated below.
    n = (0.4681 g Mg)(1 mol Mg/24.305 g Mg)(2 mol HCl/1 mol Mg)
    n = 0.0385 mols HCl

From the given concentration, we calculate for the required volume. 
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<em>Answer: 59.26 mL of HCl</em>
7 0
3 years ago
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