2 years ago

How many grams of oxygen are produced when 3.0 moles of potassium chlorate decompose completely?

Chemistry

1 answer:

Elena-2011 [213]2 years ago

4 0

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Draw the partial (valence-level) orbital diagram, and write the symbol, group number, and period number of the element:

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Answer:

a) The element is Manganese (Mn)

b) The element is Zirconium (Zr)

Explanation:

The step by step analysis and explanation is as shown in the attachment

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2 years ago

What determines interactions between atoms?

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The interaction between the atoms is due to number of electrons in the valence shell

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In Florida, most of the rocks that are underground are a type of soft, white rock called limestone. If limestone is underwater f

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erosion

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Magnesium oxide (mgo) has the rock salt crystal structure and a density of 3.58 g/cm3. the atomic weights of magnesium and oxyge

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Answer:

(a) The unit cell edge length <u>0.421 nm</u>

Explanation:

Lets calculate -:

Given -

density = $3.58g/cm^3$

Molecular weight of MgO = 24.31 +16

$40.13 g/mole$

Avagadro number = $6.022\times10^2^3$

In rock salt structure , there are four anions and four cations , hence Z=4 (Number of formula per unit cell)

Now, using the formula -

$d=\frac{ZM}{N_Aa^3}$

$a=[\frac{ZM}{N_Ad}]]^\frac{1}{3}$

Now, putting the given values

$a=\frac{4\times40.13g/mole}{6.022\times10^2^3\times(3.58g/cm^3)}$

$4.21\times10^-^8 cm$

= 0.421 nm

<u>Hence , the unit cell edge length = 0.421 nm </u>

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2 years ago

Nitrogen has an atomic number of 7; therefore, it has _____ electrons in its outermost electron shell

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