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3 years ago

A substance that prevents the flow of electric current is a(n) .

Chemistry

2 answers:

Dmitriy789 [7]3 years ago

6 0

Answer:

Insulator

Explanation:

An insulator does not conduct electricity. Insulators offer high resistance to the free flow of electron. Rubber is a good insulator.

A conductor conducts electricity. Metals are good conductors of electricity. Metals have free flowing electrons that allow them to conduct electricity. As metals conduct electricity they have a distribution of charge on its surface.

nasty-shy [4]3 years ago

4 0

An Insulator.

Insulators prevent flow of electric current. Example is wood, clay.

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Sedaia [141]

Answer:

154 g

Explanation:

Step 1: Write the balanced decomposition equation

2 NaN₃(s) ⇒ 2 Na(s) + 3 N₂(g)

Step 2: Calculate the moles corresponding to 79.5 L of N₂ at STP

At STP, 1 mole of N₂ occupies 22.4 L.

79.5 L × 1 mol/22.4 L = 3.55 mol

Step 3: Calculate the number of moles of NaN₃ needed to form 3.55 moles of N₂

The molar ratio of NaN₃ to N₂ is 2:3. The moles of NaN₃ needed are 2/3 × 3.55 mol = 2.37 mol.

Step 4: Calculate the mass corresponding to 2.37 moles of NaN₃

The molar mass of NaN₃ is 65.01 g/mol.

2.37 mol × 65.01 g/mol = 154 g

6 0

3 years ago

All of the following are examples of physical properties EXCEPT

stepladder [879]

Reaction with acid. That is a chemical reaction.

4 0

3 years ago

URGENT HELP

sdas [7]

The answer is option C 7.60 M

7 0

3 years ago

The density of mercury is 13.6 g/mL what is the density in lbs/L ( 1 lb hint =0.454 kg )

Vesna [10]

Answer:

$30.0\frac{lb}{L}$

Explanation:

Hello,

In this case, since 454 g are equivalent to 1 pound and 1000 millilitres are equivalent to 1 liter, the required density is computed below by applying the corresponding conversion factor:

$=13.6\frac{g}{mL} *\frac{1lb}{454g} *\frac{1000mL}{1L} \\\\=30.0\frac{lb}{L}$

Regards.

6 0

4 years ago

Which two processes are responsible for water's transfer of transfer of energy in the atmosphere and hydrosphere?

Liula [17]

Oooo! I love this :P
D. Precipitation and evaporation :P
When I rains the clouds travel from place 2 place raining in different places bringing water.
THE WATER CYCLE 4 ONE THING

7 0

3 years ago