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2 years ago

14

50 POINTS!!!!!!!!!

1 answer:

nevsk [136]2 years ago

7 0

1. Balloon will expand.

This is because when the temperature is higher, the particles of matter gain more heat energy, this heat energy is converted into the kinetic energy of particles. So, they move more rapidly in all directions, increasing the volume.

2. Balloon will contract.

This is because when the temperature is lower, the particles of matter lose more heat energy to their surroundings, this heat energy is converted from the kinetic energy of particles. It means they lose kinetic energy. So, they move less rapidly in all directions, decreasing the volume.

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classify the following compounds as ionic (metal + nonmetal) , covalent (nonmetal + nonmetal) or both (compound containing a pol

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Answer:

1. ionic

2. covalent

3. covalent

4. both

Explanation:

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3 years ago

3. What kind of mixture does each mixture have?

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Answer:

heterogeneous and homogeneous

Explanation:

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2 years ago

Read 2 more answers

In a nonpolar covalent bond, electrons are

castortr0y [4]

Answer: c. Shared equally between two atoms

Electrons are shared equally because the atoms have the same electronegativity.

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2 years ago

g What is the molarity of hydrochloric acid if 40.95 mL of HCl is required to neutralize 0.550 g of sodium oxalate, Na2C2O4

kykrilka [37]

Answer:

0.0002 M

Explanation:

<em>The molarity of the HCl required would be 0.0002 M.</em>

First, let us consider the balanced equation of the reaction:

$Na_2C_2O_4 + 2HCl = 2NaCl + H_2 + 2CO_2$

<em>Stoichiometrically, 1 mole of </em> $Na_2C_2O_4$ <em> reacts with 2 moles of </em> $HCl$ <em> for a complete neutralization reaction.</em>

Recall that: mole = $\frac{mass}{molar mass}$

Mole of 0.550 g sodium oxalate = 0.550/134 = 0.0041 mole

<em>If 1 mole </em> $Na_2C_2O_4$ <em> requires 2 moles HCl, then 0.0041 mole will require</em>:

0.0041 x 2 = 0.0082 mole HCl

Volume of the HCl = 40.95 L

Molarity = mole/volume

Hence, molarity of the HCl = 0.0082/40.95 = 0.0002 M

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3 years ago

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