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3 years ago

10

If you had to draw a covalent bond between two atoms, which items would you need to include?

1 answer:

EastWind [94]3 years ago

4 0

I think the correct answers from the choices would be options B and C. You need the chemical symbols of the atoms so you will know how the atoms share the bond. Also, you need the electrons shared between atoms since it is what makes the covalent bond between the atoms.

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How manymoles of each ion are present in 175 mL of 0.147 M Fe2(SO4)3?

lilavasa [31]

Answer: 0.0257 moles of $Fe^{3+}$ and 0.0257 moles of $SO_4^{2-}$

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

$Molarity=\frac{moles}{\text {Volume in L}}$

moles of $Fe_2(SO_4)_3=Molarity\times {\text {Volume in L}}=0.147\times 0.175L=0.0257moles$

The balanced reaction for dissociation will be:

$Fe_2(SO_4)_3\rightarrow Fe^{3+}+SO_4^{2-}$

According to stoichiometry:

1 mole of $Fe_2(SO_4)_3$ gives 1 mole of $Fe^{3+}$ and 1 mole of $SO_4^{2-}$

Thus there will be 0.0257 moles of $Fe^{3+}$ and 0.0257 moles of $SO_4^{2-}$

8 0

3 years ago

The product of Pb(NO3)2 (aq) + HNO3 (aq)

Scrat [10]

Answer:

Pb(NO3)2 – Lead(II) nitrate sourceaà

Other names: Lead nitrate source Plumbous nitrate source Lead dinitrate source

Appearance: White colourless crystals asource:White or colourless crystals source.

H2O – Water, oxidane source

Other names: Water (H2O) source: Hydrogen hydroxide (HH or HOH) source: Hydrogen oxide source

Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source.

8 0

3 years ago

To three significant digit,what is the mass percentage of iron in the compound Fe2O3

svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

Mass percentage = $\frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3} }$ x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage = $\frac{2(55.85)}{159.7} x 100$ = 69.94% = 69.9%

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

4 0

3 years ago

Write the complete balanced equation for the reaction between iron (III) oxide (Fe2O3) and water (H2O). You do not need to make

Alina [70]

Fe2O3+3H2O->2Fe(OH)3

6 0

3 years ago

How many valence electrons are in atom of sulfur?

Nookie1986 [14]

The answer is six because it is in group six A on the periodic table.

8 0

3 years ago