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Ray Of Light [21]
3 years ago
9

Before a bond breaks in a chemical reaction, what happens

Chemistry
1 answer:
Assoli18 [71]3 years ago
8 0
They have to form a chemical bond in order to brake them down first
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Express the frequency in inverse seconds of n=4 to n=3
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1.60×10¹⁴ s⁻¹

Explanation:

When an electron jumps from one energy level to a lower energy level some energy is released in the form of a photon.

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Where would you look for igneous rocks? Why?
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Where Igneous Rocks Are Found. The deep seafloor (aka... the oceanic mantle) is made almost entirely of basaltic rocks, with peridotite underneath in the mantle.

Explanation: im pretty sure thats right at least

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3 years ago
Solids are usually more dense than:
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Solids are usually more dense than liquids and gases. 
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A technician needs 500.0mL of a 0.500 M MgCl2 solution for some lab procedures. The stock bottle is labeled 4.00 M MgCl2. What v
mihalych1998 [28]

Answer:

Explanation:

To solve this problem, we need to obtain the number of moles of the solute we desired to prepare;

    Number of moles  = molarity x volume

Parameters given;

        volume of solution = 500mL  = 0.5L

          molarity of solution = 0.5M

   Number of moles  =  0.5 x 0.5  = 0.25moles

Now to know the volume stock to take;

           Volume of stock = \frac{number of moles }{molarity}

  molarity of stock  = 4M

                 volume  = \frac{0.25}{4}   = 0.0625L or 62.5mL

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