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andrew-mc [135]
3 years ago
9

Fill in the blank with either "insulators" or "conductors" to complete the sentence. the conductivity of a material is determine

d by the number of free electrons. have few or no free electrons.
Chemistry
2 answers:
Sergio [31]3 years ago
4 0

The answer is insulators.

Insulators are the substances that have few or no free electrons.

Conductivity of a substance or material  is determined by the number of free electrons, Conductors are the substances that have large number of free electrons while insulators are the substances that have few or no free electrons.

So if a material has few or no free electrons than it must be characterized as insulator.

Goshia [24]3 years ago
3 0
The Answer to the question is insulators.
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Information related to a titration experiment is given in the balanced equation and table below.
Scorpion4ik [409]

Answer:

0.24M

Explanation:

The equation for the reaction is given below:

H2SO4 + 2KOH → K2SO4 + 2H2O

From the equation above, we obtained the following information:

nA (mole of acid) = 1

nB (mole of base) = 2

Data obtained from the question include:

Va (volume of the acid) = 12mL

Ca (concentration of the acid) =?

Vb (volume of the base) = 36mL

Cb (concentration of the base) = 0.16 M

The Ca (concentration of the acid) can be obtained as follow:

CaVa/CbVb = nA/nB

Ca x 12 / 0.16 x 36 = 1 /2

Cross multiply to express in linear form as shown below:

Ca x 12 x 2 = 0.16 x 36

Divide both side by 12 x 2

Ca = 0.16 x 36/ 12 x 2

Ca = 0.24M

Therefore, the concentration of the acid is 0.24M

6 0
3 years ago
The mass of an unidentified rock is 40 grams. Students determine the volume of the rock by placing the rock in a cylinder with w
insens350 [35]

Answer:

A. Coal

Explanation:

Volume_{rock} = water displaced by rock

Water displaced by rock = volume of water after rock is dropped into the cylinder - volume of water before the rock was dropped into the water

Water displaced by the rock = 180 ml - 150 ml = 30 ml

Volume_{rock} = 30 ml

Density of rock:

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x grams => 1 ml

Cross multiply

1*40 = 30*x

40 = 30x

40/30 = 30x/30

1.3 = x

Density of rock = 1.3 g per 1 ml

Recall: 1 ml = 1 cm³

Therefore,

Density of the rock = 1.3 g/cm³

1.3 g/cm³ falls within the range of 1.1 - 1.4 g/cm³

Therefore, the rock is identified as Coal.

7 0
3 years ago
The atoms or molecules in solids have no motion. true or false
Anarel [89]
False.

The atoms or molecules do have motion, but it is barely detectable.
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3 years ago
Number of electrons present in 10th shell of<br> an atom
stellarik [79]

Answer:

there will be 8 electrons

3 0
3 years ago
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Umnica [9.8K]

Answer: Gas

Explanation: Because to check temperature of a room you use a gas in then room

5 0
3 years ago
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