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Alja [10]
2 years ago
9

Which characteristic best explains the difference in melting behavior of covalent substances and ionic substances? Ionic substan

ces have weaker intermolecular attractions. Ionic substances usually have stronger atomic bonds. Covalent substances have weaker intermolecular attractions. Covalent substances usually have stronger atomic bonds.
Chemistry
2 answers:
AleksandrR [38]2 years ago
3 0

Answer:

Covalent substances have weaker intermolecular attractions.

Explanation:

i just took the test

Dmitriy789 [7]2 years ago
3 0

Answer:

<u>Option C is correct</u>

Explanation:

Covalent substances have weaker intermolecular attractions.

Scored 100% on my quiz on Edge :)

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What is the mass of a sample of water that takes 2000 kJ of energy to boil into steam at 373 K. The latent heat of vaporization
zzz [600]

Answer:

\boxed{\text{889 g}}

Explanation:

The formula relating the mass m of a sample and the heat q to vaporize it is

q = mL, where L is the latent heat of vaporization.

\begin{array}{rcl}2000 \times 10^{3} \text{ J} & = & m \times \dfrac{2.25 \times 10^{6} \text{ J}}{\text{1 kg}}\\\\m & = & \dfrac{2000 \times \times 10^{3}\text{ kg}}{2.25 \times 10^{6}}\\ & = & \text{0.889 kg}\\\\ & = & \text{889 g}\\\end{array}\\\text{The mass of water is $\boxed{\textbf{889 g}}$}

5 0
2 years ago
Explain the volume of ideal gasses as related to the molar concept.
horrorfan [7]

Answer:

n = Initial volume/22.4L

Explanation:

The molar concept is simply one that is used to find the Number of moles and explain the relationship it has with avogadro's number, molecular mass, molar mass e.t.c.

Now, in terms of molar mass, number of moles is given by the formula;

n = mass of the sample/molar mass

In terms of avogadro's number, number of moles is;

1 mole = avogadro's number = 6.02 × 10^(23)

Now, when dealing with ideal gases, the molar volume of an ideal gas is 22.4 L.

Now the relationship between this volume and the mole concept is that the number of moles is gotten by dividing the initial volume by this molar volume.

Thus;

n = Initial volume/22.4L

6 0
3 years ago
Chemicals that cause cancer or called
Tpy6a [65]
They are called carcinogens
5 0
3 years ago
The larges lakes in the world are found in:
Natalka [10]
The answer is
C. North America
Explanation:
4 0
2 years ago
Complete Table G to view the effect of surface area on the rate of reaction by transferring your data from Tables D and E to Tab
alexdok [17]

Answer:

The crushed tablet dissolves fastest among the three forms.

Explanation:

The experiment is aimed at determining the effect of surface area of reactants on reaction rate.

Sodium bicarbonate tablets are provided and divided into three groups of consisting of three trials each. The temperature of the water is kept constant at 20°C. The first group consists of three tablets of sodium bicarbonate dissolved in individual trials in water. The second group consists of three quarter tablets of sodium bicarbonate dissolved in individual trials in water. The third group consists of three crushed tablets of sodium bicarbonate dissolved in individual trials in water.

The results shows that the average time for the dissolution of the first group is 51 seconds; the second group is 42 seconds while the third group is 17 seconds.

Therefore, it can be concluded that increasing the surface area of reactants increases the rate of reaction. This is because more reactant molecules are exposed for dissolution by water with increase in surface area.

4 0
2 years ago
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