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
Archy [21]
2 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:
MAXImum [283]2 years ago
6 0

Answer:

The metallic oxide is Li₂O

Explanation:

Let the metallic oxide be M₂O

Thus;

M₂O + H₂ = 2M + H₂O

Molar mass of M₂O = (2x + 16)

We assume Molar mass of M to be x.

We are told that 5.00 g of the metallic oxide produces 2.32 g of the metal.

By proportion, we can write the following;

5g of M₂O × (1 mole of M₂O/(2x + 16)) × (2 moles of M/1 mole of M₂O) = 2.32 g of M × 1 mole of M/x g of M

This cancels out to give us;

10/(2x + 16) = 2.32/x

Cross multiply to get;

10x = 2.32(2x + 16)

10x = 4.64x + 37.12

10x - 4.64x = 37.12

5.36x = 37.12

x = 37.12/5.36

x = 6.925 g/mol

The metal with a molar mass closest to this value of x is Lithium which has a molar mass of 6.94 g/mol

Thus the metal is Lithium and as such the metallic oxide is Li₂O

You might be interested in
What is a hypothesis
babunello [35]

a hypothesis is an idea or explanation that you then test through study and experimentation

3 0
3 years ago
Read 2 more answers
Why do thermistors increase in conductivity when heated? What happens in normal metals? Explain on the atomic level.
Marysya12 [62]

Metal conductivity generally goes down or resistivity goes up with temperature goes up.

7 0
2 years ago
In an experiment to determine if the height of a cake is determined by the temperature at which is cooked, measuring the height
Bezzdna [24]

Answer:

  • <u>Dependent variable</u>

Explanation:

In a controlled <em>experiment </em>there will be one independent variable, one dependent variable, and some controlled or constant parameters.

The target of the expermiment is to tes how the dependent variable changes with the independent variable.

So, the scientist will change (manipulate) the independent variable and measure the dependent vabiales.

Here, the temperature will be manipulated (within a range), so this is the independent variable; the height of the cake is the variable whose behavior wants to be determined, so this is the dependent variable. Controlled variables or constants may include the mixture, the size of the pan, the time of cooking, the oven, among others.

6 0
3 years ago
You just got home from a run on a hot Atlanta afternoon. You grab a 1.00 liter bottle of water and drink three quarters of it in
-Dominant- [34]

Answer:

¾ litters of water was consumed

2.24 litters = 1 mole of water

Therefore ¾÷2.24 moles was consumed

0.33 moles

8 0
3 years ago
Question 13 of 32
jarptica [38.1K]

Answer:

A

Explanation:

this should be obvious if you read it haha

3 0
3 years ago
Other questions:
  • What mass of al is required to completely react with 25.0 grams of mno2?
    6·2 answers
  • A NaOH(aq) solution with a pH value of 13 is used to determine the molarity of a HCl(aq) solution. A 10.0-mL sample of the HCl(a
    13·1 answer
  • What is this material
    15·1 answer
  • Which of the following is necessary for photosynthesis?
    15·1 answer
  • How do you think energy flows in and out of the earth's atmosphere ?
    10·1 answer
  • Fossil fuels indirectly rely on what source for their energy?
    8·2 answers
  • If 8.82 grams of Aluminum reacts, how many grams of AlCl3 will be produced?
    6·1 answer
  • If you have a dozen pennies and a dozen quarters, how many coins do you have?
    13·1 answer
  • Calculate the [H3O+] for orange juice, which has a [OH–] = 5.0 × 10–11 M.
    9·1 answer
  • What is the [Na2SO4] (MM = 142.04 g/mol) in ppt if 100.00 mL of a
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!