Why do you think nonmetals are used as insulators in thermos bottles?

Chemistry

1 answer:

Rama09 [41]2 years ago

4 0

Answer:

in non-metal elements the electrons are held much more tightly in the chemical bonds that hold the atoms together

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Word equation of nitrogen + oxygen —--> ammonia

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Answer:

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Using the model of the periodic table, which two elements pictured have similar chemical properties?

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Answer:

1 and 3

Explanation:

The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.

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The bond between the 2 Cl atoms in a Cl₂ molecule is a covalent bond.
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A sample of gas contains 3.0L of nitrogen at 320kPa. What volume would be necessary to decrease the pressure at 110kPa

Phoenix [80]

Answer:

$V_{2} = 8.92 L$

Explanation:

We have the equation for ideal gas expressed as:

PV=nRT

Being:

P = Pressure

V = Volume

n = molar number

R = Universal gas constant

T = Temperature

From the statement of the problem I infer that we are looking to change the volume and the pressure, maintaining the temperature, so I can calculate the right side of the equation with the data of the initial condition of the gas:

$P_{1} V_{1} =nRT$