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
Lorico [155]
3 years ago
11

The volume of a sample of gas measured at 27 °C is 10.0 dm . What is the temperature when the volume is reduced to 9.0 dm at the

same pressure?
Chemistry
1 answer:
Mars2501 [29]3 years ago
5 0

Answer:

T_2=24.3^{\circ} C

Explanation:

Given that,

The volume of a sample of gas measured at 27 °C is 10.0 dm.

We need to find the temperature when the volume is reduced to 9.0 dm at the same pressure.

According Charles law,

\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}

Where, T₂ is new temperature

T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{9\times 27}{10}\\\\T_2=24.3^{\circ} C

So, the new temperature is 24.3^{\circ} C.

You might be interested in
What would be your best course of action if exposed to this hazard?
Olenka [21]

Answer: Option C) Rinse the affected area with cool water for 10-15 minutes.

Explanation:

Once exposed to burns, whether chemical or heat, rinse the affected area of the body with cool water, as water is known to dissolve all burning particles attached to the skin, and cool off the blood vessels lying beneath the burned surface.

Unlike other options provided, rinsing affected area with cool water is the best first aid for skin burns

6 0
3 years ago
Which of these events is caused by contact forces?
harkovskaia [24]

Earthquakes along the San Andreas fault in California.

<u>Explanation</u>:

  • When the two plates collide with each other, earthquakes occur. The contact between them makes this earthquake possible. The contact forces are responsible for the earthquakes as there is contact between two plates.          
  • The gravitational force is a force that is responsible for elevated tides happening on the east coast or the Jupiter's moons to remain in orbit. But this is not a contact force as there is no contact between them
  • Moreover, Without any contact, the magnetic force is a non-contact as it attracts the pins from a distance.          
3 0
3 years ago
Commercial cold packs often contain solid NH4NO3 and a pouch of water. The temperature of the pack drops as the NH4NO3 dissolves
Yanka [14]

Answer: b. \Delta H_{soln} is positive and \Delta S_{soln} is positive.

Explanation:-

As the temperature of the pack drops, the energy has been absorbed from the pack for dissolution of NH_4NO_3 in water. Thus as the energy has been absorbed in the reaction, the reaction is endothermic and the change in enthalpy i.e. \Delta H_{soln} is positive.

The entropy is the measure of degree of randomness. The entropy increases when the randomness increases and the entropy decreases when the randomness decreases. When a substance dissolves in water, it dissociate into ions and hence the randomness increases thus the change in entropy i.e. \Delta S_{soln}  is positive.

NH_4NO_3\rightarrow NH_4^++NO_3^-

7 0
3 years ago
What are the factors that affect the rate of dissolution? color, temperature, stirring texture, surface area, stirring temperatu
tangare [24]
Color, temperature, stirring
3 0
3 years ago
Read 2 more answers
What’s the answer to this question pls help
Solnce55 [7]
In order of reactivity: magnesium, iron, copper, silver
4 0
3 years ago
Other questions:
  • Distinguish air mass and a front
    14·1 answer
  • A solution is prepared from 26.7 g of an unknown compound and 116.2 g acetone, C3H6O, at 313 K. At this temperature the vapor pr
    8·1 answer
  • A compound of nitrogen and oxygen is 30.46 percent by mass of N and 69.54 percent by mass O. The molar mass if the compound was
    8·1 answer
  • A sample of a gas originally at 29 °c and 1.25 atm pressure in a 3.0 l container is allowed to contract until the volume is 2.2
    8·1 answer
  • What is the partial pressure of the third gas, helium?
    13·1 answer
  • Two examples of energy transformations are shown. The energy transformations are similar because they both involve transformatio
    9·2 answers
  • Two solutions are mixed, bringing together ions of Na+, PO43−, V3+, and Cl−. Use the solubility rules to identify the compositio
    8·1 answer
  • -
    11·1 answer
  • Reflection obtained from a smooth surface is called a
    9·1 answer
  • 50 Two chemicals are mixed and sold in a plastic bag The bag begins to inflate and becomes hot to the touch. what evidence suppo
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!