3 years ago

URGENT:

1 answer:

8 0

Answer:

The elements that are commonly positive ions are metals. But there are a few gases that can become positively charged by losing electrons.

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Charlie the Chemist heats a 62.51 g piece of copper from 22.9°C to 345.0°C. Calculate the amount

Ivanshal [37]

Mass=m=62.51g
Initial temperature=T_i=22.9°C
Final temperature=T_f=345.0°C
Specific heat of copper=0.0920cal/g°C
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$\\ \tt\hookrightarrow Q=mc\Delta T$

$\\ \tt\hookrightarrow Q=62.1(0.0920)(322.1)$

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$\\ \tt\hookrightarrow Q=1840.222cal$

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How would using a wider cuvette affect absorbance?

IgorC [24]

The width of the cuvette is important in the spectrophotometric analysis since wider cuvette translates to more absorbing species present in the path where light passes, hence more absorbance is read in the analysis. other factors include the concentration of the sample and the species itself present.

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HELP!!! 30 POINTS!!!

maria [59]

Explanation:

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<h2>It's correct</h2>

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10.0 grams of octane are burned in a bomb calorimeter containing 2.00 × 102 g H2O. How much energy, in kilocalories, is released

vodomira [7]

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Masja [62]

Answer:

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multiply 180×24×60

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