Answer
solids conduct heat more efficiently ! basically their particles are more tightly packed and stay in that position, so the heat transfer by collision allows for the best conduction
Explanation:
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2. The boiling point of a liquid will increase with increasing atmospheric pressure.
3. The boiling point of a liquid will decrease with decreasing atmospheric pressure.
4. Liquids have no definite volume.
Answer:
4
Explanation:
1 is correct
Liquids have no definite shape as they take up the shape of the container. Thus, we can say a liquid has no shape of its own but rather has the shape of the container in which it is filled.
2 is correct
When the atmospheric temperature is increased, it also will increase the boiling point of the liquid
3 is correct
This is an extension of the statement 2. While we decrease the atmospheric pressure, we are also decreasing the boiling point
4 is incorrect
A liquid have a definite volume. When we say a volume is definite, it means the volume is fixed and does not change. The volume of liquids is definite for a particular mass of the liquid and does not change
The statement 'Liquids have no definite volume' is not true. Liquids do have a definite volume, but no definite shape. The boiling point of a liquid changes with atmospheric pressure.
The statement ' Liquids have no definite volume' is NOT a true statement about liquids. In fact, while they do not have a definite shape and take on the shape of their container, liquids do have a definite volume under given conditions.
Statements 2 and 3 accurately describe that the boiling point of a liquid varies with changes in atmospheric pressure. Specifically, the boiling point increases with increasing atmospheric pressure, and conversely decreases with decreasing atmospheric pressure.
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Hello!
Answer:
Explanation:
→ The force applied to an object is equal to:
Where:
- a is the acceleration
- F is the force
- m is the mass
→ So, the acceleration of the car is equal to:
Conclusion:
The acceleration of the car is 1.30m/s².
Explanation:
acceleration is directly proportional to the force and inversely proportional to the mass of the object
a=f/m
=1700/1300
When a catalyst is added to a system the equilibrium concentration remains unchanged. A catalyst increases the activation energy of the forward reaction. The correct option is 2.
A substance which increases the rate of a reaction without itself undergoing any permanent change chemically or quantitatively is defined as the catalyst and the phenomenon is known as the catalysis. It is believed that a catalyst usually participates in the chemical reaction and it speeds up.
In short, the catalyst lowers the energy barrier and thereby provides a different path of lower activation energy for the reaction so that the rate of the reaction increases.
A catalyst speeds up both the forward and backward reactions to the same extent and does not alter equilibrium constant. Thus it speeds up the attainment of equilibrium faster.
Thus the correct option is 2.
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1.0 M
1.5 M
2.0 M
Answer:
1.0 M
Explanation:
Hello,
Molarity is a unit of concentration accounting for the amount of the moles of a solute per liter of solution as shown below:
In such a way, given the information on the statement, the resulting molarity turns out into:
Do not forget that mol per liters means molar units (M) as well.
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