Which would be best categorized as heat transfer by conduction?

Chemistry

2 answers:

GalinKa [24]4 years ago

8 0

The answer is C) Feeling the heat from a light bulb with your hand when touching the bulb. :)

Maru [420]4 years ago

4 0

Answer: Option (C) is the correct answer.

Explanation:

When two substances or objects are at different temperature and heat from object 1 flows to object 2 when both of them are placed touching each other then this process is known as conduction.

For example, when we touch a light bulb then heat from the bulb flows into the hand.

Thus, we can conclude that out of the given options, feeling the heat from a light bulb with your hand when touching the bulb is best categorized as heat transfer by conduction.

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A student has a piece of aluminum metal. Which is the most reasonable assumption the student could make about the metal?

igor_vitrenko [27]

Aluminium belongs to 13th group of periodic table. It undergoes oxidation to given Al^+3 .

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3 0

3 years ago

Read 2 more answers

Please help with #2 and #3

Vaselesa [24]

Answer:

2. $V_2=17L$

3. $V=82.9L$

Explanation:

Hello there!

2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:

$\frac{V_2}{T_2}=\frac{V_1}{T_1}$

Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:

$V_2=\frac{V_1T_2}{T_1}$

Therefore, we plug in the given data to obtain:

$V_2=\frac{18.2L(22+273)K}{(45+273)K} \\\\V_2=17L$

3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:

$V=\frac{nRT}{P}$