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inessss [21]
3 years ago
12

!GIVING BRAINLIST!

Physics
2 answers:
Sonja [21]3 years ago
6 0

Answer:

A. CaO + CO2 —> CaCO3

Explanation:

edge

ad-work [718]3 years ago
5 0

Calcium carbonate is a compound that can be broken down by chemical means.

The given compounds;

reactant = CaCO₃

product = CaO + CO₂

In a chemical reaction called thermal decomposition, lime stone also known as calcium carbonate can be broken down when heat is applied to it. It is a chemical process because new substances such as quick lime (calcium oxide) and carbon iv oxide will be formed.

The overall reaction is given as;

CaCO₃  → CaO + CO₂

Thus, we can conclude that calcium carbonate is a compound that can be broken down by chemical means.

Learn more here: brainly.com/question/15315072

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Consider that 168.0 J of work is done on a system and 305.6 J of heat is extracted from the system. In the sense of the first la
Ilia_Sergeevich [38]

To solve this problem we must resort to the Work Theorem, internal energy and Heat transfer. Summarized in the first law of thermodynamics.

dQ = dU + dW

Where,

Q = Heat

U = Internal Energy

By reference system and nomenclature we know that the work done ON the system is taken negative and the heat extracted is also considered negative, therefore

W = -168J \righarrow  Work is done ON the system

Q = -305.6J \rightarrow Heat is extracted FROM the system

Therefore the value of the Work done on the system is -158.0J

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3 years ago
If all of the forces acting on an object balance so that the net force is zero, then
nadya68 [22]
The answer is (A) the object must be at rest.

When all of the forces acting on an object balance, the net force is zero and hence the object will not move.

Yes, the direction might also change under some special circumstances. 
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4 years ago
Which statement about the physical properties of matter is true? (15)
Maslowich

Answer:

Psisical properties used to be considered the properties that can be modified by phisical means. New theories state that chemical properties of matter are interrelated to the phisical ones

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If you wanted to know the location of a vehicle that ran out of gas after taking a zigzag route through the city, which quantity
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All of the following equations are statements of the ideal gas law except
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Answer:

a. P = nRTV

Explanation:

The question is incomplete. Here is the complete question.

"All of the following equations are statements of the ideal gas law except a. P = nRTV b. PV/T = nR c. P/n = RT/v d. R = PV/nT"

Ideal gas equation is an equation that describes the nature of an ideal gas. The molecule of an ideal gas moves at a particular velocity depending on the temperature. This gases collides with one another elastically. The collision that an ideal gas experience is a perfectly elastic collision.

The ideal gas equation is expressed as shown:

PV = nRT where:

P is the pressure of the gas

V is the volume

n is the number of moles

R is the ideal gas constant

T is the temperature.

Based on the formula given for an ideal gas, it can be inferred that the equation. P = nRTV is not a statement of an ideal gas equation.

The remaining option will results to an ideal gas equation if they are cross multipled.

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