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timama [110]
3 years ago
7

How much heat is absorbed by a 750-g iron skillet when its temperature rises from 25oC to 125 oC? The specific heat of iron is 0

.449 J/goC.
Chemistry
1 answer:
saveliy_v [14]3 years ago
7 0
DT = 125oC – 25oC = 100oC
Q = (750g)(0.449J/goC)(100oC) = 33,675J
33,675J = 33.7kJ

Answer: 33.7 kJ
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elena55 [62]

Answer:

Likely to gain electrons

Explanation:

The atom shown is likely to gain additional electrons to complete its electronic configuration.

  • Since this is a neutral specie, the number of protons and electrons are the same.
  • The atom has 16 electrons
  • the number of valence electrons is 6
  • If the atom gains two additional electrons, the octet configuration is attained
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The atom will prefer to gain additional 2 electrons to give an octet configuration.

5 0
3 years ago
To what temperature must 7. 50 moles of a gas have to be heated in a 20L container in order for it to exert a pressure of 6. 50
givi [52]

Answer:

<em>21.14 K</em>

Explanation:

<em>We know the Ideal Gas Equation is :-</em>

<em>PV = nRT</em>

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<em>=> T = 6.5 x 20 / 7.5 x 0.082</em>

<em>=> T = 130 / 6.15</em>

<em>=> T = 21.14 K</em>

6 0
2 years ago
Calculate the volume in liters of a barium acetate solution that contains of barium acetate . Be sure your answer has the correc
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Answer:

1.09 L

Explanation:

There is some info missing. I think this is the original question.

<em>Calculate the volume in liters of a 0.360 mol/L barium acetate solution that contains 100 g of barium acetate. Be sure your answer has the correct number of significant digits.</em>

<em />

The molar mass of barium acetate is 255.43 g/mol. The moles corresponding to 100 grams are:

100 g × (1 mol/255.43 g) = 0.391 mol

0.391 moles of barium acetate are contained in an unknown volume of a 0.360 mol/L barium acetate solution. The volume is:

0.391 mol × (1 L/0.360 mol) = 1.09 L

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