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
Rufina [12.5K]
3 years ago
11

Pleaseeee helpppppppp

Chemistry
1 answer:
Minchanka [31]3 years ago
7 0

Answer:

C. The third option

Explanation:

You might be interested in
Give a theoretical reason why lithium and oxygen combine in the ratio 2:1
V125BC [204]
Lithium is in the first column of the periodic table and thus can only form one bond with another atom (its ion is Li+)

Oxygen can form two bonds (as in the dioxygen O2).

Hence if you conbine Li and O it has to be Li2O.
4 0
3 years ago
Which equations represent precipitation reactions?
pychu [463]

A. : In this reaction one of the product, FeS is insoluble. Therefore, this is a precipitation reaction.


B. : In this reaction, the product is a solid(insoluble). So, this is a precipitation reaction too.


C.: In this reaction, both the products are soluble. So this is not a precipitation reaction.


D.: In this reaction, both the products are soluble. So this is not a precipitation reaction.


E. : In this reaction, the product AgCl is a precipitate. So, it is a precipitation reaction.

6 0
3 years ago
Read 2 more answers
What does the red line in the diagram below represent?
bekas [8.4K]

Answer:

The activation energy

Explanation:

The activation energy is the energy hump that lies between reactants and products. It is the energy barrier that reactants must cross before they are converted into products.

Based on the collision theory, only particles that possess the activation energy are able to collide in such a way that leads to reaction.

Collision of particles having an energy content less than the activation energy of the reaction merely leads to elastic collision between such particles.

5 0
2 years ago
When the temperature of a rigid hollow sphere containing 685 L of helium gas is held at 621 K, the pressure of the gas is 1.89 x
Leno4ka [110]
You have to use the equation PV=nRT.
P=pressure (in this case 1.89x10^3 kPa which equals 18.35677 atm)
1V=volume (in this case 685L)
n=moles (in this case the unknown)
R=gas constant (0.08206 (L atm)/(mol K))
T=temperature (in this case 621 K)
with the given information you can rewrite the ideal gas law equation as n=PV/RT.
n=(18.35677atm x 685L)/(0.08206atmL/molK x 621K)
n=246.8 moles
8 0
3 years ago
Which of the following describes experiences initiated spontaneously by children as they go about their daily activities?
Harlamova29_29 [7]

Answer:

naturalistic

Explanation:

4 0
3 years ago
Other questions:
  • 3.
    9·1 answer
  • What are the classification of most of the elements described as?
    13·2 answers
  • 2. Using the article complete the following, be sure to write neatly and answer all questions in
    8·1 answer
  • HELP FAST! PLEASE <br> This is due in 4 hrs!!!!! Ahhhh
    11·1 answer
  • Please help me im going out of my way and giving you extra points I really need some assistance
    11·1 answer
  • What else should I add for creativity? Or else I won’t receive credit
    14·2 answers
  • HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP ​​
    5·1 answer
  • What is single and double displacement reaction?
    10·1 answer
  • Who is the intended audience?​
    6·2 answers
  • Please help!!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!