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Tom [10]
2 years ago
5

Which instrument is directly used to determine the relative masses of atoms?

Chemistry
2 answers:
andriy [413]2 years ago
8 0
It's C ^^ she's right
sdas [7]2 years ago
4 0
(C) the mass spectromer
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How much thermal energy is in 100 grams of water at 50 degrees Celsius
Ymorist [56]
when the thermal energy is the energy contained within a system that is responsible for its temperature.  

and when the thermal energy  is can be determined by this formula:

q = M * C *ΔT

when q  is the thermal energy

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and C is the specific heat capacity of water = 4.18 joules/gram.°C

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So by substitution:

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What are the atoms of Fe(SCN)3
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A shiny chunk of metal is found to have a mass of 37.28g. The metal is dropped into a graduated cylinder which contains 20.0 mL
Amanda [17]

Answer: The density of the material is 2.66 g/mL and it is likely this  is made of Aluminum

Explanation:

The first step to know the material of the chunk of metal is to calculate its density. The general formula for density is P (density) = \frac{m (mass)}{ v (volume)}. Moreover, in this case, it is known the mass is 37.28 g, but the volume is not directly provided. However, we know the water in the graduated cylinder had a volume of 20.0 mL and this increased to 34.0 mL when the chunk of metal is added, this means the volume of the metal is 14 mL (34.0 mL - 20.0 mL = 14 mL). Now let's calculate the density:

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6 0
3 years ago
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