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
adoni [48]
2 years ago
5

Cân bằng phương trình Mg+HCl->MgCl2+H2 bằng phương pháp thăng bằng

Chemistry
1 answer:
nignag [31]2 years ago
8 0

quá trình oxi hóa: Mg0 -> Mg2+ + 2e-

quá trình khử: 2H+ + 2e- -> H2 (cần 2 H+ để tạo 1 H2)

----> chỉ cần thêm 2 vào trước HCl (vì H+ là do HCl cung cấp)

----> Mg + 2HCl -> MgCl2 + H2

yay :)

You might be interested in
Alkali metals
Evgen [1.6K]
The answer is going to be A.
3 0
3 years ago
Read 2 more answers
Please help (30 points)
aleksandrvk [35]

1) is chemical Bonds

3) Conservation of mass

5) compound

hope i helped on the ones i could answer

7 0
2 years ago
Read 2 more answers
Titanium dioxide (TiO2) is used extensively as a white pigment. It is produced from an ore that contains ilmenite (FeTiO3) and f
STALIN [3.7K]

Answer:

2928kg of ore are required.

2585kg of the 80% H₂SO₄ solution are required.

Explanation:

To solve this question we need first to find the moles of titanium in 1000kg of TiO₂. Keeping in mind the 89% of descomposition we can find the mass of the ore and the mass of the 80% sulfuric acid required:

<em>Moles TiO₂ -Molar mass: 79.866g/mol-:</em>

1x10⁶g * (1mol / 79.866g) = 12521 moles Titanium

In mass -Molar mass Ti: 47.867g/mol-:

12521 moles Titanium * (47.867g / mol) = 599341.4g of Ti.

As the ore contains 24.3% of Ti:

599341.4g of Ti = 599.34kg Ti * (100 / 24.3) = 2606kg ore

As the descomposition is just of 89%:

2606kg ore * (100 / 89) =

<h3>2928kg of ore are required</h3><h3 />

<em>Mass 80% sulfuric acid:</em>

12521 moles Titanium = 12521 moles H₂SO₄ * (100/89) = 14068.5 moles of H₂SO₄ are required.

In an excess of 50% =

14068.5 moles of H₂SO₄ are required * 1.5 = 21102.8 moles of H₂SO₄.

The mass is:

21102.8 moles of H₂SO₄ * (98g / mol) = 2068075g = 2068kg of sulfuric acid

That is in the 80%:

2068kg of sulfuric acid * (100/ 80) =

<h3>2585kg of the 80% H₂SO₄ solution are required</h3>
3 0
3 years ago
In some regions of the world, forests are cut down and then burned to create room for farmland. How might this local environment
UkoKoshka [18]

The answer is D.

<u>Explanation</u>

Without trees, no carbon dioxide will be released into the air. It would not raise oxygen levels, and it wouldn’t effect rising sea levels.

6 0
2 years ago
Read 2 more answers
After many generations, which trait will be most common? Why?
allsm [11]

It would be sadness because people have been going thru alot of things over the years

6 0
2 years ago
Other questions:
  • Explain the structure and function of DNA. What important roles does the phosphate-sugar backbone, nitrogen bases, complementary
    15·1 answer
  • Which states of matter can flow?
    10·2 answers
  • PLEASE HELP!!!!
    14·2 answers
  • To find density of an object what 2 things are needed?
    8·1 answer
  • The mass of a substance is independent of the amount of the substance, while density depends on the amount of the substance. the
    8·1 answer
  • Un niño de 9 años se encuentra balanceándose en un columpio, si el columpio se encuentra en equilibrio y la cadena que soporta l
    15·1 answer
  • Question 1 (1 point)<br> ROOTS--What is NOT a root function in plants?
    12·1 answer
  • Calculate the molar mass of Al2O3.<br> A) 70 g/mol B) 43 g/mol C) 102 g/mol<br> D) 210 g/mol
    15·1 answer
  • Can someone answer ASAP if you hurry I will mark brainliest
    6·1 answer
  • Please help! it’s due date is in a few minutes
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!