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3 years ago

What do gasses have

Chemistry

2 answers:

Goshia [24]3 years ago

6 0

Answer:

Explanation:

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

tia_tia [17]3 years ago

4 0

Answer:

Explanation:

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Word Bank: Mixtures, Compounds, Matter, Homogeneous, Element, Substance, Heterogeneous

docker41 [41]

Answer:

1. Element

2. Heterogeneous mixture

3. Compound

4. Mixture or Substances

5. Elements

6. Homogeneous mixture

4 0

3 years ago

Which of the following occurs during a redox reaction?

GenaCL600 [577]

Answer:

C = Electrons are won and lost.

Explanation:

The oxidation reduction reactions are called redox reaction. These reactions are take place by gaining and losing the electrons and oxidation state of elements are changed.

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Consider the following reactions.

4KI + 2CuCl₂ → 2CuI + I₂ + 4KCl

the oxidation state of copper is changed from +2 to +1 so copper get reduced.

CO + H₂O → CO₂ + H₂

the oxidation state of carbon is +2 on reactant side and on product side it becomes +4 so carbon get oxidized.

Na₂CO₃ + H₃PO₄ → Na₂HPO₄ + CO₂ + H₂O

The oxidation state of carbon on reactant side is +4. while on product side is also +4 so it neither oxidized nor reduced.

H₂S + 2NaOH → Na₂S + 2H₂O

The oxidation sate of sulfur is -2 on reactant side and in product side it is also -2 so it neither oxidized nor reduced.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized.

3 0

3 years ago

Bromine has a charge of__ when it has 36 electrons.

Elan Coil [88]

Explanation :

Actually bromine have 35 electrons when it is neutral, and if the number of electrons is increased by 1 it gains a relative negative charge of 1.

Also written as : -1

6 0

3 years ago

Hannah added a silvery white metal to a beaker of cold water and noticed that

Schach [20]

Answer:

A. Hot water increases the collision rate of the molecules, causing the

reaction to occur faster.

Explanation:

Hot water molecules move faster than cold water molecules.

3 0

3 years ago

Sodium carbonate can be prepared by heating sodium bicarbonate. 2 NaHCO3(s) ----> Na2CO3(s) + CO2(g) + H2O(g). Given that DHo

Likurg_2 [28]

Answer:

T = 401.6 K

Explanation:

Given reaction:

$NaHCO3(s) ----> Na2CO3(s) + CO2(g) + H2O(g)$

The thermodynamic parameters; ΔG°, ΔH° and ΔS° are related via the Gibbs -Helmholtz equation given as:

$\Delta G^{0}=\Delta H^{0}-T\Delta S^{0}----(1)$

For a given reaction, the gibbs free energy change ΔG° is related to the equilibrium constant K as:

$\Delta G^{0}=-RTln(K) ---(2)$

It is given that K = 1,

Therefore,

$\Delta G^{0}=-RTln(1) = 0$

Substituting for ΔG° in equation (1)

$0=\Delta H^{0}-T\Delta S^{0}$

$\Delta H = T\Delta S$

$T = \Delta H^{0}/\Delta S^{0}=\frac{128.9 kJ}{0.321 kj/mol-K}=401.6 K$

5 0

3 years ago