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Sunny_sXe
2 months ago
11

If the same amount of heat is added to 50.0 g samples of each of the metals which are all at the same temperature, which metal w

ill reach the highest temperature?
Copper 0.385 J/gºC
Magnesium 1.02 J/gºC
Mercury 0.138 J/g °C
Silver 0.237 J/g °C
Lead 0.129 J/gºC
a. Copper
b. Magnesium
c. Mercury
d. Silver
e. Lead
Chemistry
1 answer:
Tems11 [2.7K]2 months ago
4 0
e. Lead. In this scenario, since the computation of heat in a heating or cooling process utilizes specific heat, it is evident that a lower specific heat results in a higher achieved temperature, given that they share an inversely proportional relationship. Thus, Lead will achieve the highest temperature among the mentioned metals when subjected to the same amount of heat.
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Determine the empirical formula of the following compound if a sample contains 0.104 molK, 0.052 molC, and 0.156 molO.
lions [2927]

The empirical formula is K₂CO₃.  

This formula represents the most simplified whole-number ratio of atoms in a chemical compound.  

The atom ratio aligns with the mole ratio, which means our task is to find the molar ratios for K:C:O.  

I prefer to summarize these calculations in table form.  

Element Moles  Ratio¹ Integers²  

     K       0.104   2.00         2

     C       0.052  1.00          1

     O      0.156   3.00         3

¹ To obtain the molar ratio, each mole value is divided by the smallest mole count.  

² Convert the ratio values to integers (2, 1, and 3).

The empirical formula is K₂CO₃.

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3 months ago
5. Rubbing alcohol is a commonly used disinfectant and has a cooling effect when applied to the skin. The active ingredient in r
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Answer:

The designation of 70% (vol/vol) indicates

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If it were 200 ml, then naturally, it would contain 70*2 = 140 ml of isopropanol required.

8 0
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