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antoniya [11.8K]
3 years ago
10

A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. which test co

nclusion indicates that the compound is ionic?
Chemistry
1 answer:
marshall27 [118]3 years ago
8 0
If these are you choices: 
(1)  Both the solid and the liquid are good conductors.

(2)  Both the solid and the liquid are poor conductors.

(3)  The solid is a good conductor, and the liquid is a poor conductor.

(4)  The solid is a poor conductor, and the liquid is a good conductor. 

 Then the answer is number 4. This is because ionic compound conducts electricity when it is dissolved in water.

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Convert 2.39 x 1022 molecules of water into moles of water
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Answer:

0.0397\ \text{mol}

Explanation:

Number of molecules of water = 2.39\times 10^{22}

N_A = Avogadro's number = 6.022\times 10^{23}\ \text{mol}^{-1}

Number of moles is given by

\dfrac{2.39\times 10^{22}}{6.022\times 10^{23}}

=0.0397\ \text{mol}

The number of moles of water is 0.0397\ \text{mol}.

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Which of the following is a way in which elements and compounds are similar?
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Answer:

Compound Element

Definition: A compound contains atoms of different elements chemically combined together in a fixed ratio.

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Elements and compounds are purely homogeneous substances and they have a constant composition throughout. Elements and compounds cannot be separated into their respective constituents by physical means. Compounds and mixtures are made up of different elements or different atoms.

Hopefully this helps you!!!!

5 0
3 years ago
Read 2 more answers
How much energy is lost to condense 300. grams of steam at 100.C?
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Energy lost to condense = 803.4 kJ

<h3>Further explanation</h3>

Condensation of steam through 2 stages:

1. phase change(steam to water)

2. cool down(100 to 0 C)

1. phase change(condensation)

Lv==latent heat of vaporization for water=2260 J/g

\tt Q=300\times 2260=678000~J

2. cool down

c=specific heat for water=4.18 J/g C

\tt Q=300\times 4.18\times (100-0)=125400

Total heat =

\tt 678000+125400=803400~J

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Answer:

Cations are positively charged atoms and hence we need to make the atom positively charged in order to get a cation

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