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Dovator [93]
3 years ago
14

How many atoms of oxygen are represented in 3Fe(NO3)2?

Chemistry
2 answers:
Jet001 [13]3 years ago
6 0

Answer:

18 atoms of oxygen are present

Explanation:

Atomicity of an atom in a compound is the total number of that atom present in that compound. In the question, 3 molecules of Iron(II)nitrate [Fe(NO₃)₂] contains the following number of oxygen.

In one molecule of Fe(NO₃)₂, number of oxygen atoms present is 3 × 2 = 6

If 6 atoms of oxygen are present in one molecule of Fe(NO₃)₂, in three molecules, 6 × 3 = 18 atoms of oxygen will be present in three molecules of Fe(NO₃)₂.

nexus9112 [7]3 years ago
4 0
There are 18. In each molecule of Fe(NO3)2 there are 6 oxygen atoms because you have 2 nitrate (NO3) components which each contain 3 oxygen atoms. 2 x 3 = 6. Because you have 3 molecules of Fe(NO3)2, you need to multiply 6 by 3, which gives you 18 oxygen atoms.
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For the equilibrium
Mamont248 [21]

Answer:

Equilibrium concentrations of the gases are

H_2S=0.596M

H_2=0.004 M

S_2=0.002 M

Explanation:

We are given that  for the equilibrium

2H_2S\rightleftharpoons 2H_2(g)+S_2(g)

k_c=9.0\times 10^{-8}

Temperature, T=700^{\circ}C

Initial concentration of

H_2S=0.30M

H_2=0.30 M

S_2=0.150 M

We have to find the equilibrium concentration of gases.

After certain time

2x number of moles  of reactant reduced and form product

Concentration of

H_2S=0.30+2x

H_2=0.30-2x

S_2=0.150-x

At equilibrium

Equilibrium constant

K_c=\frac{product}{Reactant}=\frac{[H_2]^2[S_2]}{[H_2S]^2}

Substitute the values

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

9\times 10^{-8}=\frac{(0.30-2x)^2(0.150-x)}{(0.30+2x)^2}

By solving we get

x\approx 0.148

Now, equilibrium concentration  of gases

H_2S=0.30+2(0.148)=0.596M

H_2=0.30-2(0.148)=0.004 M

S_2=0.150-0.148=0.002 M

3 0
3 years ago
The compound NaCl is an example of a(n)
Oduvanchick [21]
NaCl or sodium chloride is composed of two metals: the cation is Na + while the anion is the Cl-. In this case, when two metals form a bond, valence electrons are transferred. NaCl is an ionic compound. In 2, upon chemical change, the properties of the compound resulting from the reaction are somewhat closely related from the elemental properties. 
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3 years ago
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Svetllana [295]

Answer:

A

Explanation:

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2 years ago
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A mixture of gases has 0.3000 mol of CO2, 0.2706 mol of SO2 and 0.3500 mol of water vapor. The total pressure of the mixture is
notka56 [123]

Answer:

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Explanation:

We apply the mole fraction concept to solve this:

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Mole fraction SO₂ = 0.2706 moles / 0.9206 moles → 0.29

Now, we can know the partial pressure:

0.29 = Partial pressure SO₂ / Total pressure

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0.29 . 1.5atm = Partial pressure SO₂ → 0.440 atm

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