1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alika [10]
3 years ago
9

A compound is made up of iron and oxygen, only. The ratio of iron ions to oxide ions is 2:3 in this compound. The IUPAC name for

this compound is
(1) triiron dioxide (3) iron(III) oxide
(2) iron(II) oxide (4) iron trioxide
Chemistry
2 answers:
never [62]3 years ago
6 0

Answer: The correct option is 3.

Explanation: We are given a compound which is made up of iron and oxygen only. The ratio of the two are given as:

\frac{\text{iron ions}}{\text{oxide ions}}=\frac{2}{3}

This means that, number of iron ions are 2

Number of oxide ions are 3

From the above information, the formula becomes : Fe_2O_3

The valency of iron = 3

Valency of oxide = 2

This compound is named as iron (III) oxide.

Hence, the correct option is 3

nasty-shy [4]3 years ago
4 0
A compund is made up of iron and oxygen, only. The ratio of iron ions to oxide irons is 2:3 in this compund. The IUPAC name for this compound is<em> Iron (III) Oxide. </em>
You might be interested in
The following reactions can be used to prepare samples of metals. Determine the enthalpy change under standard state conditions
mamaluj [8]

Answer:

a) 62.1 kJ/mol

b) 2.82 kJ/mol

c) 270.91 kJ/mol

d) -851.5 kJ/mol

Explanation:

The enthalpy change for a reaction in standard conditions (ΔH°rxn) can be calculated by:

ΔH°rxn = ∑n*ΔH°f, products - ∑n*ΔH°f, reagents

Where n is the number of moles in the stoichiometry reaction, and ΔH°f is the enthalpy of formation at standard conditions. ΔH°f = 0 for substances formed by only a single element. The values can be found in thermodynamics tables.

a) 2Ag₂O(s) → 4Ag(s) + O₂(g)

ΔH°f, Ag₂O(s) = -31.05 kJ/mol

ΔH°rxn = 0 - (2*(-31.05)) = 62.1 kJ/mol

b) SnO(s) + CO(g) → Sn(s) + CO₂(g)

ΔH°f,SnO(s) = -285.8 kJ/mol

ΔH°f,CO(g) = -110.53 kJ/mol

ΔH°f,CO₂(g) = -393.51 kJ/mol

ΔH°rxn = [-393.51] - [-110.53 - 285.8] = 2.82 kJ/mol

c) Cr₂O₃(s) + 3H₂(g) → 2Cr(s) + 3H₂O(l)

ΔH°f,Cr₂O₃(s) = -1128.4 kJ/mol

ΔH°f,H₂O(l) = -285.83 kJ/mol

ΔH°rxn = [3*(-285.83)] - [( -1128.4)] = 270.91 kJ/mol

d) 2Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2Fe(s)

ΔH°f,Fe₂O₃(s) = -824.2 kJ/mol

ΔH°f,Al₂O₃(s) = -1675.7 kJ/mol

ΔH°rxn = [-1675.7] - [-824.2] = -851.5 kJ/mol

3 0
3 years ago
When the concentration of hydrogen lons equals the concentration of hydroxide ions, is called the ?
Ira Lisetskai [31]

Answer:

neutral pH or neutral solution

Explanation:

when hydrogen ion concentration and hydroxide ion concentration the pH is neutral i.e. ph=pOH=7

3 0
3 years ago
Explain in your own words what empirical evidence is.
zhuklara [117]
Empirical evidence is information acquired by observation or experimentation
4 0
3 years ago
Read 2 more answers
A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressu
dangina [55]

Answer:

Partial pressure of Ne is 0.61 atm.

Explanation:

Mole fraction of a gas (x) in mixture = (no. of moles of the gas in mixture)/(total no. of moles of gases in mixture)

Here, total no. of moles of gases = (0.32 + 0.56) moles = 0.88 moles

So, mole fraction of Ne in mixture, x_{Ne}=\frac{0.56}{0.88}=0.64

Let's assume both He and Ne along with their mixture behaves ideally,

Hence, in accordance with Dalton's law of partial pressure-

                     P_{Ne}=x_{Ne}\times P_{total}

Where, P_{Ne} and P_{total} are partial pressure of Ne and total pressure respectively.

So,  P_{Ne}=(0.64)\times (0.95atm)=0.61atm

So, partial pressure of Ne is 0.61 atm.

4 0
3 years ago
Which family of elements can be found in the area marked B
postnew [5]

Answer:

A) Alkaline Earth Metals

Explanation:

Area Marked A would be Alkali Metals

Area Marked B would be Alkaline Earth Metals

Area Marked C would be Transition Metals

Area marked H would be Halogens

3 0
3 years ago
Other questions:
  • A 52.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 26.0 mL of KOH at 25 ∘C.
    14·1 answer
  • The enthalpy change for converting 1.00 mol of ice at -25.0 ∘c to water at 90.0∘c is ________ kj. the specific heats of ice, wat
    7·1 answer
  • The phase change in which a substance changes from a liquid to a solid is A. freezing. B. melting. C. sublimation. D. condensati
    12·1 answer
  • This is two or more elements chemically combined in a fixed ratio.
    13·2 answers
  • Complete and balance HBr(aq)+NaHCO3(aq)→
    15·2 answers
  • i’m in desperate need of help haha. btw it’s 200 ml of a clear liquid and 50 ml of a different clear liquid. please help
    10·1 answer
  • This exercise deals with safety issues in the Freezing Point Depression experiment. Choose the answer that best completes each s
    13·1 answer
  • what is the diffrence between displacement ans double displacement reactions write equations for these reactions
    15·1 answer
  • A 3.82L balloon filled with gas is warmed from 204.9K to 304.8 K.
    8·1 answer
  • What’s the empirical formula of taurine
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!