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Anna35 [415]
3 years ago
13

You burn a log on a fire. You use fire to warm yourself and help you see to read a book. What energy transformation is taking pl

ace?
Chemistry
1 answer:
Vinvika [58]3 years ago
5 0

Answer:

heat energy to keep you warm and light energy to be able to read your book

Explanation:

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A rubber balloon was filled with helium at 25.0˚C and placed in a beaker of liquid nitrogen at -196.0˚C. The volume of the cold
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Answer:

The volume of helium at 25.0 °C is 60.3 cm³.

Explanation:

In order to work with ideal gases we need to consider absolute temperatures (Kelvin). To convert Celsius to Kelvin we use the following expression:

K = °C + 273.15

The initial and final temperatures are:

T₁ = 25.0 + 273.15 = 298.2 K

T₂ = -196.0 + 273.15 = 77.2 K

The volume at 77.2 K is V₂ = 15.6 cm³. To calculate V₁ in isobaric conditions we can use Charle's Law.

\frac{V_{1}}{T_{1}} =\frac{V_{2}}{T_{2}} \\V_{1}=\frac{V_{2}}{T_{2}} \times T_{1}=\frac{15.6cm^{3} }{77.2K} \times 298.2K=60.3cm^{3}

3 0
3 years ago
Which compound is bonded covalently? A.KF B.MgS C.BeO D.SO2
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Answer:

SO2 is bonded covalently

Explanation:

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5. Which are physical properties of a property of Aluminum metal?
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A molecule has two atoms that are bonded to the central atom and one lone pair of electrons around this central atom. What is th
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