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
e-lub [12.9K]
3 years ago
8

1. How will you differentiate physical from chemical change in terms of the

Chemistry
1 answer:
Tpy6a [65]3 years ago
3 0

Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

You might be interested in
In the uncatalyzed reaction N2O4 (g) ⇌ 2 NO2 (g) the pressure of the gases at equilibrium are PN2O4 = 0.377 atm and PNO2 = 1.56
larisa86 [58]

Answer:

The pressures will remain at the same value.

Explanation:

A catalyst is a substance that alter the rate of a chemical reaction. It either speeds up the or slows down the rate of a chemical reaction.

While a catalyst affects the rate, it is noteworthy that it has no effect on the equilibrium position of the chemical reaction. A catalyst works by creating an alternative pathway for the reaction to proceed. Most times, it decreases the activation energy needed to kickstart the chemical reaction.

Hence, we know that it has no effect on the equilibrium position. Factors affecting equilibrium position includes, temperature and concentration of reactants and products( pressure in terms of gases).

The reactants and the products here are gaseous, and as such pressure affects the equilibrium position. Now, we have established that the equilibrium position is unaffected. And as such the pressure affecting it does not change.

Thus, we have established that the pressure of the products and reactants are unaffected and as such they remain at their value unaffected.

8 0
3 years ago
Which gas in Earth's atmosphere protects Earth by reflecting untraviolet radiation?
egoroff_w [7]

Answer:

I think it's nitrogen I'm not really sure..

6 0
3 years ago
How to get ice and snow<br> power?​
algol13

Answer:

i don't think you can, but if you do know let me know

3 0
2 years ago
8. A saturated solution of Ag Croq has a silver-ion concentration of 1.3 x 10-4M. Which is the Ksp of Ag CrO 4?
yawa3891 [41]

Answer: The K_{sp} of AgCrO_{4} is 1.1 \times 10^{-12}.

Explanation:

Given: [Ag^{+}] = 1.3 \times 10^{-4} M

The reaction equation will be written as follows.

Ag_{2}CrO_{4} \rightleftharpoons 2Ag^{+} + CrO^{2-}_{4}

This shows that the concentration of CrO^{2-}_{4} is half the concentration of Ag^{+} ion. So,

[CrO^{2-}_{4}] = \frac{1.3 \times 10^{-4}}{2}\\= 0.65 \times 10^{-4} M

The expression for K_{sp} of this reaction is as follows.

K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}]

Substitute values into the above expression as follows.

K_{sp} = [Ag^{+}]^{2}[CrO^{2-}_{4}]\\= (1.3 \times 10^{-4})^{2} \times 0.65 \times 10^{-4}\\= 1.1 \times 10^{-12}

Thus, we can conclude that the K_{sp} of AgCrO_{4} is 1.1 \times 10^{-12}.

6 0
3 years ago
The phase(s) of matter that demonstrate fluidity include:
melomori [17]

Liquid and Gas are the phases of matter that demonstrate fluidity.

Explanation:

The phenomenon of easy flow or easy transfer or movement of particles is termed as fluidity. As it is known that matters are basically classified into three types or phases. They are solid, liquid and gases. The solid particles are tightly bonded. In other words, high energy is required to move the atoms in the solid material. But in liquid the atoms are slightly loosely bonded. So they are flow easily. With only the viscous tendency hindering its flow, the liquid phased materials can be termed as fluid. Similarly, the easiest travelling particles are gas particles and so they also have fluidity and they are also termed as fluid. So the phases which are termed under fluid criteria demonstrating fluidity included liquid and gas phase

3 0
3 years ago
Other questions:
  • 100.0 mL of a 0.500 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the solution
    13·1 answer
  • 4. Describe in detail the relationship between chemical bonds and energy. What must be true of the bonds for a reaction to be en
    9·1 answer
  • What is the maximum theoretical efficiency possible for a heat engine operating between a reservoir in which ice and water coexi
    5·1 answer
  • A compound contains only change and n combustion of 35.0mg of the compound produces 33.5mg co2 and 41.1mg h2o. What is the empir
    7·1 answer
  • Please help!!!!!! BRAINLIEST to right answer! :))
    7·1 answer
  • Which of the following is an example of an environmental problem caused by chemicals?
    15·1 answer
  • Based on the following molecular weight data of polypropylene, determine the degree of polymerization Molecular Weight Range (g/
    11·1 answer
  • The shortest and direction of an object change in position ​
    6·1 answer
  • Sodium nitrate is used in fertilizers, explosives, and glass manufacturing. Give the formula for this compound
    12·1 answer
  • What is moment and its calculations ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!