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3 years ago

Nonmetals are poor ____________ of both heat and electricity.

Chemistry

2 answers:

motikmotik3 years ago

7 0

Answer:

A) conductors

Explanation:

Nonmetals -

Non metals are opposite of metals , with exactly different properties as that of the metals .

The properties on non - metals are as follows -

Low melting point

Low boiling point

low density

Poor conductor of heat and electricity .

Brittle .

Non - metals gain or share electron to attain stability .

Hence , the correct term for non metal is poor A) conductors of both heat and electricity .

Masteriza [31]3 years ago

3 0

Answer:plz brainly me;)

Your answer is "A" Conductors

Nonmetals include common gasses that are found in the atmosphere, such as nitrogen and oxygen, as well as sulfur (S) and carbon too. Nonmetals are usually not good conductors of heat and electricity.

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There are three sets of sketches below, showing the same pure molecular compound (hydrogen chloride, molecular formula ) at thre

RideAnS [48]

Answer:

The correct answer is - option C.

Explanation:

Given: the melting point of HCl is

-114.8 °C, which suggests that below this temperature HCl will be solid.

and, since the boiling point of HCl is - 85.1 °C. It is also suggested that above this temperature HCl will be gas, Therefore.

Solid -114.8 - Ordered arrangement

Liquid -85.1c - Less orderly arranged

Gaseous - Least orderly arranged

Thus, at —90 °C, HCl will be present 'in the liquid state, At — 1 °C, HCl will be present in the gaseous state and at -129 °C, HCl will be present in the solid-state. So, the molecules will be organized in a more orderly manner .

Thus, the correct answer is - option C

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3 years ago

Which of the following best describes how electrically charged

OleMash [197]

Answer:

As electric current flows through a wire, it generates a magnetic field in the area surrounding the wire.

Explanation:

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2 years ago

The process by which DNA becomes mRNA occurs where within the cell?

creativ13 [48]

Answer: Transcription

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2 years ago

The reaction between NaOH(aq) and H2SO4(aq) was studied in a constant-pressure calorimeter: 100.0 mL portions of 1.00 M aqueous

Anettt [7]

Answer:

110,4 kJ / mole of acid

Explanation:

The reaction of NaOH with H₂SO₄ is:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

Moles of NaOH and H₂SO₄ are:

0,1000L×1,00M = 0,100 moles of NaOH and 0,100 moles of H₂SO₄. As 2 moles of NaOH reacts with 1 mole of H₂SO₄, moles of acid that react are 0,100/2 = 0,0500moles of acid.

The produced heat is:

Q = C×m×ΔT

Where C is specific heat capacity (4,18J/gK)

m is mass: 200,0mL×(1,00g/mL) = 200g

ΔT is change in temperature: 30,6°C - 24,0°C = 6,6°C = 6,6K

Thus, Q is:

Q = 4,18J/gK×200g×6,6K

Q = 5518J = 5,52kJ

ΔH in kJ per mole of acid:

5,52kJ / 0,0500moles of acid = 110,4 kJ / mole of acid

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3 years ago

7. What is the potential energy of a rock that has a mass of 100 kg that is sitting on top of a hill 300 m high?

levacccp [35]

Answer:

294000 J or 294 kJ

Explanation:

Potential energy is given by:

$U=mgh$

Where U is potential energy, m is mass, g is acceleration due to gravity, and h is height. Using this equation:

$U=100(9.8)(300)\\U=294000$

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2 years ago