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Drupady
2 months ago
9

a 9.84 ounces ingot of unknown metal is heated from 73.2 degrees fahrenheit - 191.2 degrees fahrenheit this requires 3.912 calor

ies of energy calculate the specific heat of the metal
Chemistry
1 answer:
lions [2.9K]2 months ago
6 0

The SI unit for specific heat is J/g°C. Therefore, specific heat can be determined using this formula:

Specific Heat = Energy / (mass x temperature change)

Thus,

Specific Heat = 3.912 cal / (9.84 oz x (191.2 ˚F – 73.2 ˚F))

Specific Heat = 3.369 x 10^-3 cal/oz-˚F

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In the molecule ClF3, chlorine makes three covalent bonds. Therefore, three of its seven valence electrons need to be unpaired.
alisha [2963]

Answer:

Explanation:

Chlorine has an electron configuration of 2, 8, 7

Within the n = 3 shell, it has 7 electrons consisting of 2 in the s subshell and 5 in the p subshell. However, one of the p electrons shifts to the d orbital, altering the electronic configuration  to be as follows

3s^23p_x^23p_y^23p_z^1  = 7

3s^23p_x^23p_y^13p_z^13d_{xy}^1

These orbitals such as sp³d hybridize, creating 7 degenerate orbitals where two orbitals are filled with electron pairs and three remain singly occupied by electrons (unpaired electrons).

3 0
1 month ago
The standard heat of combustion of ethanol, C2H5OH, is 1372 kJ/mol ethanol. How much heat (in kJ) would be liberated by complete
alisha [2963]

Answer:

The accurate answer is 596.5 kJ.

Explanation:

The question specifies that the mass of ethanol, C2H5OH, is 20 grams.

The molar mass of ethanol is 46 g/mol.

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= 20/46 = 0.435 moles

According to the question, the standard heat of combustion for ethanol is 1372 kJ/mol. Hence, one mole releases 1372 kilojoules during combustion.

The energy produced from burning 20 grams of ethanol completely is 0.435 * 1372 = 596.5 kJ.

4 0
2 months ago
Complete the following equation of nuclear transmutation.
Alekssandra [3086]

Answer:

For the equation of nuclear transmutation, the answer is Option A. 1 0n

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Further details on balancing the equation for the reaction presented in the question can be found in the accompanying image.

4 0
1 month ago
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The symbol for xenon (Xe) would be a part of the noble gas notation for the element antimony. cesium. radium. uranium.
castortr0y [3046]
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Answer: cesium



8 0
2 months ago
Read 2 more answers
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