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Orlov [11]
2 years ago
11

What is the formula of Iron oxide​

Chemistry
2 answers:
Fed [463]2 years ago
8 0
Fe2O3
That’s the formula for iron oxide
BaLLatris [955]2 years ago
8 0

is an inorganic compound with the formula fe2o3

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What is the molar mass of 4.23 g of an elemental gas in a 2.5L container at 282K and 1.4 atm?
balu736 [363]

Answer:

27.98g/mol

Explanation:

Using ideal gas law equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

T = temperature (K)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

According to the information given:

V = 2.5L

P = 1.4 atm

T = 282K

n = ?

Using PV = nRT

n = PV/RT

n = 1.4 × 2.5/0.0821 × 282

n = 3.5/23.1522

n = 0.151mol

Using the formula to calculate molar mass of the elemental gas:

mole = mass/molar mass

Molar mass = mass/mole

Molar mass = 4.23g ÷ 0.151mol

Molar mass = 27.98g/mol

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3 years ago
How many inches long is a football field
Dominik [7]
120 feet usually....
8 0
3 years ago
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Most fertilizers consist of nitrogen-containing compounds such as NH3,CO(NH2)2,NH4NO3, and (NH4)2SO4. Plants use the nitrogen co
Y_Kistochka [10]

Answer: 1. NH_3=82.4\%

2.  CO(NH_2)_2=46.7\%

3. . NH_4NO_3=35\%

4. (NH_4)_2SO_4=21.2\%

NH_3 has highest nitrogen content.

Explanation:

To calculate the mass percent of element in a given compound, we use the formula:

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Molar mass of nitrogen compound}}\times 100

1. NH_3

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} NH_3}=\frac{14}{17}\times 100=82.4\%

2. CO(NH_2)_2

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} CO(NH_2)_2}=\frac{14\times 2}{12\times 1+16\times 1+2\times 14+4\times 1}\times 100=\frac{28}{60}\times 100=46.7\%

3. NH_4NO_3

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of} NH_4NO_3}=\frac{14\times 2}{14\times 2+16\times 3+4\times 1}\times 100=\frac{28}{80}\times 100=35\%

4. (NH_4)_2SO_4

\text{Mass percent of nitrogen}=\frac{\text{Mass of nitrogen}}{\text{Mass of}(NH_4)_2SO_4}=\frac{14\times 2}{14\times 2+16\times 4+32\times 1+8\times 1}\times 100=\frac{28}{132}\times 100=21.2\%

Thus NH_3 has highest nitrogen content  of 82.4%.

8 0
3 years ago
HELLLPPPP ASAP !!!! Pls
Vlada [557]

Answer:

Melting point, boiling point, state of matter at room temperature, heat of vaporization, flammability and reactivity

Explanation:

8 0
2 years ago
What is the structure of polypropylene
pantera1 [17]

The Structure of polypropylene(C3H6)n is linear.

  • The chemical formula for polypropylene is (C3H6)n.
  • It is a polymer with complex structure and also known as polypropene.
  • Polypropylene is similar to polyethylene which belongs to polyolefin groups.
  • Generally the polymers are synthesized from the polymerization process.
  • What is polymerization?

The process in which atom or small molecules joined together repeatedly to form a polymer with complex structure is called as polymerization.

The repeated unit of atom or small molecule is called monomer

<h3>Structure of polypropylene</h3>

Polypropylene is synthesized from the polymerization of propylene which is the monomer unit.

It has a linear structure made of propylene hydrocarbon units.

Learn more about polypropylene on

brainly.com/question/20038733

#SPJ1

8 0
1 year ago
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