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Romashka [77]
2 years ago
6

A 90.0 g sample of an unknown metal absorbed 25.6 J of heat as its temperature increased 1.18 degrees C. What is the specific he

at of the metal
Chemistry
1 answer:
jenyasd209 [6]2 years ago
8 0

The specific heat of the metal is 241.05 J/kg°C

<h3>What is specific heat capacity?</h3>

Specific heat capacity can be defined as the amount of heat required to raise a unit mass of metal through 1 °C

To calculate the specific heat capacity of the metal, we use the formula below.

Formula:

  • Q = cm(t'-t)............... Equation 1

Where:

  • Q = Heat absorbed by the metal
  • c = specific heat capacity of the metal
  • m = mass of the metal
  • Δt = increase in temperature

make c the subject of the equation

  • c = Q/m(Δt)................. Equation 2

From the question,

Given:

  • Q = 25.6 J
  • m = 90 g = 0.09 kg
  • Δt = 1.18 °C

Substitute these values into equation 2

  • c = 25.6/(1.18×0.09)
  • c = 241.05 J/kg°C

Hence, the specific heat capacity of the metal is 241.05 J/kg°C.

Learn more about specific heat capacity here: brainly.com/question/21406849

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1.4715 atm is the pressure of the sample 1.33 moles of fluorine gas that is contained in a 23.3 L container at 314 K.

What is an ideal equation?

The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas. The terms are: p = pressure, in pascals (Pa).

Given data:

Volume (V) = 23.3 L

Number of mole (n) = 1.33 moles

Temperature (T) = 314 K

Gas constant (R) = 0.821 atm.L/Kmol

Pressure (P) =?

The pressure inside the container can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

P × 23.3 L = 1.33 moles × 0.0821 ×314 K

P = 1.4715 atm

Therefore, the pressure of the sample is 1.4715 atm.

Learn more about the ideal gas equation:

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Explanation:

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Calcium chloride contains calcium and chloride ions. Write the ground-state electron configuration for the calcium ion.
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Answer:

1s2 2s2 2p6 3s2 3p6

Explanation:

Calcium is the 20th element. It has 20 electrons in it's neutral state. The electronic configuration is given as;

1s2 2s2 2p6 3s2 3p6 4s2

However in the compound; calcium chloride, it does not exist in it's neutral state.

CaCl2 --> Ca2+   +   Cl-

In Ca2+ state, it has lost two electrons, The total number of electrons becomes; 20 - 2 = 18 electrons.

The electronic configuration is given as;

1s2 2s2 2p6 3s2 3p6

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Fdsddddgdgdgdgsdggd.
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Fdsddadgdsadgsd:
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Why did the food coloring separate into different dyes?
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It is a mixture

Explanation:

Food coloring is able to separate into different dyes because it just a simple mixture of different color pigments.

Under a chromatogram the different colors will migrate relatively over an absorbent.

A mixture is an impure substance with the following properties:

  • composition is indefinite as they are made up of two or more elements or compounds in any proportion by mass.
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