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
melomori [17]
2 years ago
7

Can you guys help me with these chem questions there’s 12....??

Chemistry
1 answer:
mash [69]2 years ago
5 0
I would love to help!
You might be interested in
_____Mg + ____Fe2O3 → _____Fe + ____MgO
german

Answer:

3Mg + Fe₂O₃  → 2 Fe + 3MgO

Explanation:

Chemical equation;

Mg + Fe₂O₃  →  Fe + MgO

Balanced Chemical equation;

3Mg + Fe₂O₃  → 2Fe + 3MgO

This is the balanced equation. There are three magnesium, two iron and three oxygen atoms are on both side of equation thus it follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

7 0
3 years ago
What is the octet rule?
PolarNik [594]

The Octet rule is a general rule of thumb that applies to most atoms. Basically, it states that every atom wants to have eight valence electrons in its outermost electron shell.


4 0
3 years ago
Read 2 more answers
Which statement is true for all minerals
nekit [7.7K]

What are the answer choices


8 0
2 years ago
PLEASE HELP, CHEMISTRY!!! 20 POINTS!!!
mart [117]

the answer is in the picture

6 0
3 years ago
Read 2 more answers
An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
olasank [31]

1) As can be seen from any 1H NMR chemical shift ppm tables, hydrogens which have δ values from 2ppm to 2.3ppm are hydrogens from carbon which is bonded to a carbonyl group. From this, we can conclude that our hydrogens belong to the type, but from 2 different alkyl groups because of 2 different signals.

 

2) So, one alkyl group is CH3 and second one can be CH or CH2.

 

3) If we know that ratio between two types of hydrogens is 3:2, it can be concluded that second alkyl group is CH2. 


4) Finally, we don't have any other signals and it indicates that part of the compound which continues on CH2 is exactly the same as the first part.

The ratio remains the same, 3:2 ie 6:4

7 0
2 years ago
Other questions:
  • Which of the following provides evidence that supports the continental drift theory? PLEASE HELP 10 POINTS
    14·2 answers
  • How is the energy level of an atom's valence electrons related to the period in the periodic table?
    13·1 answer
  • How many moles are in 5.25 L of oxygen gas as stp
    13·1 answer
  • I really need help plz plz plz plz plz plz
    13·1 answer
  • Help please? I really need to finish this. A response would be helpful :)
    9·2 answers
  • How does reducing the use of packaging and other materials conserve resources
    6·1 answer
  • According to Newton's third law, forces come in pairs. There is_____and an equal and opposite_____.
    9·1 answer
  • What does 2,3-dibromopentane look like?
    13·1 answer
  • A scuba diver knows that she needs 50.0mol of air for an upcoming dive. What size (volume) tank will she need to fill for this d
    13·1 answer
  • How to frick a chicken...
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!