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Scrat [10]
2 years ago
6

The specific heat of nickel is 0.44 J/g*⁰C. How much energy needed to change the temperature of 95.4g of nickel from 32⁰C to 22⁰

C. Is the energy absorbed or released?
Chemistry
2 answers:
Allushta [10]2 years ago
3 0
The energy would be absorbed 
azamat2 years ago
3 0
The energy will be absorberd
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The percent composition by mass of a compound is 76.0% c, 12.8% h, and 11.2% o. the molar mass of this compound is 284.5 g/mol.
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You have a few steps to solve this one. First, we'll find the molar mass by percentage of each element in the molecule. Then, we'll divide each of those relative masses by the atomic mass of each element. The number of times the mass divides into the relative mass is the number of atoms of that element in the molecule:

C: 284.5 x .76 = 216.22
H: 284.5 x .128= 36.416
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H: 36.416 ÷ 1.008 ≈36
O: 31.864 ÷ 15.999 ≈ 2

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The empirical formula would be found by dividing out all factors of those subscript numbers. In our case, all of them can be divided by 2. The empirical formula would be C9H18O




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2 years ago
How might a collision between Neptune and Halley's Comet<br> affect Neptune's orbit?
Damm [24]

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A 360mg sample of aspirin, C9H8O4, (molar mass 180g), is dissolved in enough water to produce 200mL of solution. What is the mol
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