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
Montano1993 [528]
2 years ago
11

1. OBJECT A HAS A TEMPERATURE OF 78K AND OBJECT B HAS A

Chemistry
1 answer:
vagabundo [1.1K]2 years ago
5 0

Answer:

The law of heat conduction, also known as Fourier's law, states that the time rate of heat transfer through a material is proportional to the negative gradient in the temperature. As the temperature difference is bigger, the rate of temperature change will be bigger.

Explonation:

sorry if doesnt

help

You might be interested in
Which statement about mixtures below is most accurate?
Vinvika [58]
C. Salad is heterogeneous because you can easily see the different parts. Lemonade is homogeneous because it mixes together so that you cannot easily separate it's parts
5 0
2 years ago
A gymnast jumps from a great height onto a sealed mat filled with air.
ololo11 [35]

The gas particles squeeze closer together

6 0
3 years ago
Read 2 more answers
What is Charles law ?
Alenkinab [10]
Charles' law (also known as the law of volumes) is an experimental gas law that describes how gases tend to expand when heated.
5 0
3 years ago
How much pressure does an elephant with a mass of 2200 Kg and a total footprint area of 4500 cm2 exert on the ground?
Debora [2.8K]

Answer:

47911.1 pa

Explanation:

The SI base unit of pressure is pascal, which is N/m^2.

2200 kg is 2200*9.8=21560 N, and 4500 cm^2=4500/10000=0.45 m^2.

So the total pressure exerted on the ground (!!) is 21560/0.45= 47911.1 Pa.

6 0
3 years ago
Read 2 more answers
The free energy change for the following reaction at 25 °C, when [Cr3+] = 1.32×10-3 M and [Fe3+] = 1.14 M, is 131 kJ: Cr3+(1.32×
larisa [96]

Answer:

E°cell = - 1.3575 V

This reaction is spontaneous in the reverse direction

Explanation:

The given cell reaction:

Cr³⁺(1.32 × 10⁻³ M) + Fe²⁺(aq) → Cr²⁺(aq) + Fe³⁺(1.14 M)

The given Gibbs free energy: ΔG = 131 kJ = 131 × 10³ J     (∵ 1 kJ = 10³ J)

As we know,

ΔG = - n F E°cell

Here, n - the number of moles of electrons transferred = 1

F - Faraday constant = 96500

E°cell - cell potential = ?

\therefore E^{\circ }_{cell} = -\frac{\Delta G}{n \: F} = -\frac{131\times 10^{3}\, J}{1\, mol\times96500 \, C.mol^{-1}}

\Rightarrow E^{\circ }_{cell} = -1.3575\, V

<u>For a given chemical reaction if-</u>

1. ΔG = negative and E°cell = positive

⇒ <em>The reaction is spontaneous and proceeds spontaneously in the forward direction.</em>

2.  ΔG = positive and E°cell = negative

⇒ <em>The reaction is non-spontaneous and proceeds spontaneously in the reverse direction.</em>

<u>Since, for this chemical reaction: </u>

Cr³⁺(1.32 × 10⁻³ M) + Fe²⁺(aq) → Cr²⁺(aq) + Fe³⁺(1.14 M)

ΔG = + 131 × 10³ J ⇒ positive

and, E°cell = - 1.3575 V ⇒ negative

<u>Therefore, this reaction is spontaneous in the reverse direction.</u>

6 0
3 years ago
Other questions:
  • Which of the following conditions would most likely affect the rate of a chemical reaction? A. Increasing the number of reaction
    13·2 answers
  • Use the periodic table to answer the questions below.
    8·2 answers
  • The actual yield of a product in a reaction was measured as 1.20 g. If the theoretical yield of the product for the reaction is
    7·1 answer
  • Non example of electrical energy
    15·1 answer
  • Which of the following is not an example of a chemical change?
    14·1 answer
  • Select all that apply. At STP conditions, 0.50 moles of CO(g), Cl2(g), O2(g): will contain the same number of molecules, will co
    12·1 answer
  • Take a look at this dandelion. The yellow flower on the right is _______ pollinated and the seeds on the left are transported by
    15·2 answers
  • Compare and contrast reflecting and refracting telescopes. *
    9·1 answer
  • how does the total mass of each object increases the amount of force that is needed to get them moving at 5 m/s increase by abou
    15·1 answer
  • The runners have just started a race. They started at rest and are getting faster.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!