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
Gnoma [55]
3 years ago
5

One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal

Chemistry
1 answer:
Rudiy273 years ago
8 0

Answer:

Lithium oxide, Li₂O.

Explanation:

Hello!

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

M_2O+H_2 \rightarrow 2M+H_2O

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

5.00gM_2O*\frac{1molM_2O}{(2x+16)gM_2O}*\frac{2molM}{1molM_2O}*\frac{xgM}{1molM}   = 2.32gM

Thus, we perform the operations in order to obtain:

\frac{10x}{2x+16}=2.32

So we solve for x as shown below:

10x = 2.32(2x+16)\\\\10x = 4.64x+37.12\\\\x = \frac{37.12}{10-4.64}\\\\x= 6.93 g/mol

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.

Best regards!

You might be interested in
A voltaic cell has one half-cell with a Cu bar in a 1.00 M Cu²⁺ salt, and the other half-cell with a Cd bar in the same volume o
Verizon [17]

The E^o_{cell} of the voltaic cell is 0.743 V. The ΔG°of the given cell is -143.377 kJ and K is 1.35 × 10²⁵

<h3>What is a voltaic cell?</h3>

A voltaic cell often called a galvanic cell, is an electrochemical device that produces electricity through spontaneous redox processes.

It is divided into two distinct half-cells. A half-cell is made up of an electrode (a metal strip, M) dissolved in a solution containing Mn⁺ ions. M can be any metal.

A wire from one electrode to the other connects the two half-cells. Additionally, a salt bridge links the two half-cells.

To solve the question, we need to write the equations of two half-cells

At the anode, oxidation occurs

Cd(s) \rightarrow Cd^{2+}(aq) + 2e^-

E° = -0.403 V

At the cathode, reduction occurs

Cu^{2+}(aq) + 2e^- \rightarrow Cu(s)

E° = 0.34 V

Overall reaction:

Cd(s) + Cu^{2+}(aq) \rightarrow Cd^{2+}(aq) + Cu(s)

We know

E^o_{cell} = E^o_{cathode} - E^o_{anode}

= 0.34 -(-0.403) = 0.743 V

Also,

ΔG° = -nFE^o_{cell}

Where, n = no of electrons gained or lost

F = Faraday constant

E^o_{cell} = standard potential

ΔG° = -2×96485×0.743 = -143376.71 J = -143.377 kJ

Also,

ΔG° = -RTlnK

-143.377 = -8.314 × 10-3 × 298 × lnK

lnK = 57.87

K = 1.35 × 10²⁵

Hence, The E^o_{cell} of the voltaic cell is 0.743 V. The ΔG°of the given cell is -143.377 kJ and K is 1.35 × 10²⁵

Learn more about Voltaic cell:

brainly.com/question/4430225

#SPJ4

6 0
1 year ago
The balanced equation for the combustion of Hydrogen is:
Semmy [17]
B) 1.50 mol
Since O2 and H2O are in a 1:2 ratio, multiply 0.75×2 = 1.50
4 0
3 years ago
Write the formula for calcium chloride​
Sauron [17]

CaCI2 is  for calcium chloride

7 0
3 years ago
A new penny has a mass of 2.49 g and a volume of 0.349 cm3. Is the penny made of pure copper?
velikii [3]
Yes it is. Copper is the same mass and volume. Plus all pennies are made of copper
7 0
3 years ago
Consider the reaction: I2(g)+Cl2(g)⇌2ICl(g) Kp= 81.9 at 25 ∘C. Calculate ΔGrxn for the reaction at 25 ∘C under each condition: -
scoray [572]

Answer:

Part 1: - 1.091 x 10⁴ J/mol.

Part 2: - 1.137 x 10⁴ J/mol.

Explanation:

Part 1: At standard conditions:

At standard conditions Kp= 81.9.

∵ ΔGrxn = -RTlnKp

∴ ΔGrxn = - (8.314 J/mol.K)(298.0 K)(ln(81.9)) = - 1.091 x 10⁴ J/mol.

Part 2: PICl = 2.63 atm; PI₂ = 0.324 atm; PCl₂ = 0.217 atm.

For the reaction:

I₂(g) + Cl₂(g) ⇌ 2ICl(g).

Kp = (PICl)²/(PI₂)(PCl₂) = (2.63 atm)²/(0.324 atm)(0.217 atm) = 98.38.

∵ ΔGrxn = -RTlnKp

∴ ΔGrxn = - (8.314 J/mol.K)(298.0 K)(ln(98.38)) = - 1.137 x 10⁴ J/mol.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The Cherokees have a certain view of nature. Which of the following views would be most similar to those of the Cherokees?
    5·1 answer
  • How many d and f orbitals total are present in the n = 4 shell of a hydrogen atom? Enter your answer as a whole number.
    10·1 answer
  • In which part of the scientific method would you interpret data?
    13·2 answers
  • What is the kind of energy that occurs when nuclear bonds split or fuse?
    6·1 answer
  • Find the molar mass and the mass of 5.0000 mol of each of the following compounds. a. calcium acetate, Ca(C2H3O2)2
    10·1 answer
  • An electromagnet is different from a permanent magnet because an electromagnet ___________________________
    5·1 answer
  • In the reaction between sodium and chlorine, which atom loses an electron? _____________ which atom gains an electron? _________
    14·1 answer
  • How to titrate cocacola because of its dark colour
    14·2 answers
  • Help i dont know what im doing
    8·2 answers
  • The rate of decay of a radioactive substances is calculated by
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!