A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature chang
2 answers:
Answer: Option (C) is the correct answer.
Explanation:
Specific heat is defined as the amount of heat necessary to raise the temperature of substance by one degree Celsius.
Mathematically,
where Q = heat
m = mass of substance
c = specific heat
= change in temperature
Since mass is same for all the given substances. Therefore, more is the specific heat of a substance more frequently it will raise the temperature.
- Specific heat of copper is 0.385.
- Specific heat of iron is 0.444.
- Specific heat of liquid water is 4.184.
- Specific heat of sand is 0.290.
Thus, we can see that specific heat of liquid water is highest out of the given options.
Hence, we can conclude that liquid water absorb most heat before its temperature changes significantly.
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Adopting the number of avogrado 6.02 * 10²³ / mol
<span>Sodium chloride (table salt)</span> Molar Mass = 58.44 g / mol
We will first have to find the number of moles in 35 grams of the element, like this:
1 mol ----------------- 58.44 g
X ---------------------- 35 g
58.44 * x = 35 * 1
58.44x = 35
X = 0.598904...
X ≈ 0.60<span> mol </span>
Now we will find how many atoms there are in 0.60 mol of this element, like this:
1 mol -------------------- 6.02 * 10²³ atoms
0.60 mol ----------------- X
X = 0.60 * 6.02 * 10²³
<span>Sodium chloride (table salt)</span> Molar Mass = 58.44 g / mol
We will first have to find the number of moles in 35 grams of the element, like this:
1 mol ----------------- 58.44 g
X ---------------------- 35 g
58.44 * x = 35 * 1
58.44x = 35
X = 0.598904...
X ≈ 0.60<span> mol </span>
Now we will find how many atoms there are in 0.60 mol of this element, like this:
1 mol -------------------- 6.02 * 10²³ atoms
0.60 mol ----------------- X
X = 0.60 * 6.02 * 10²³