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umka2103 [35]
3 years ago
9

You have prepared a 1.0 M solution of CaCl2 in the laboratory.

Chemistry
1 answer:
Ratling [72]3 years ago
6 0
It’s C I think and I’m not sure
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When 55.0 grams of metal at 75.0°C is added to 100. grams of water at 15.0°C, the temperature of the water rises to 18.7°C. Assu
olga2289 [7]

Answer:

The specific heat of the metal is 0,50 J/gºC

Explanation:

Assume that no heat is lost to the surroundings

(Q = m . C . ΔT)metal + (Q = m . C . ΔT)water = 0

Let's replace our values.

55g . C . (18,7ºC - 75ºC) + 100g . 4,184 J/g·°C . (18,7ºC - 15ºC) = 0

55g . C . -56,3 ºC + 418,4J/·°C . 3,7ºC = 0

-3096,5 gºC . C + 1548,08 J = 0

1548,08 J = 3096,5 gºC . C

1548,08 J / 3096,5 gºC  = C = 0,50 J/gºC

8 0
3 years ago
Can somebody plz help answer this question correctly (only if u know how to do it) thanks :3
monitta
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8 0
2 years ago
a block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. it has a mass of 213 g. when placed in water, the block sinks
Art [367]

 When the block  of iron is  placed  in water  the volume of water that   is  displaced is  27.0  cm³


  <u><em> calculation</em></u>

The  volume water that is displaced is equal to volume of block  of the iron


volume of block of iron = length x width x height

   length= 3 cm

   width = 3  cm

 height = 3 cm

volume  is therefore = 3 cm  x  3 cm x  3  cm = 27  cm³   therefore the volume displaced  = 27 cm³  since the volume of water displaced  is equal to  volume of block.

3 0
2 years ago
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Can anybody do this?
lukranit [14]

Answer:

0.17907

Explanation:

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3 years ago
What is an element?
Marat540 [252]
B. A pure substance made up of one type of atom
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2 years ago
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