What chemical change will occur when a more reactive substance replaces a less reactive substance in a compound? a. Oxidative b. Reduction c. Displacement d. Endothermic

Answers

Answer 1

Answer:

The correct answer for above statement is:

C. Displacement.

Explanation:

Displacement reaction is a chemical reaction in which a bounteous reactive element replaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example: Reaction of iron nails with copper sulfate solution.a type of chemical reaction wherever an element counters with a compound and takes the position of another element in that compound.

Answer 2

Answer: I believe it's C. Displacement.

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If air is cooled to the point at which its water vapor condenses, it has reached itsa. dew point.
b. triple point.
c. lambda point.
d. freezing point.

Answers

a. dew point, i surlly :)

“It is important we work together on this project; we want our group to succeed.” This statement reflects __________.a. centralization
b. individualism
c. masculinity
d. collectivization

Answers

Answer: Option (d) is the correct answer.

Explanation:

When people or group of people work collectively or work together in order to achieve a certain aim then it is known as collectivism.

In collectivization, people help each other.

Thus, we can conclude that it is important we work together on this project; we want our group to succeed.” This statement reflects collectivization.

Answer:

collectivization

Explanation:

Which chemical equation represents the reaction of an Arrhenius acid and an Arrhenius base?(1) HC2H3O2(aq) + NaOH(aq) --> NaC2H3O2(aq) + H2O(l)
(2) C3H8(g) + 5 O2(g)--> 3 CO2(g) + 4 H2O(l)
(3) Zn(s) + 2 HCl(aq)--> ZnCl2(aq) + H2(g)
(4) BaCl2(aq) + Na2SO4(aq) --> BaSO4(s) + 2 NaCl(aq)

Answers

Answer : The correct option is, (1)

Explanation :

According to the Arrhenius acid-base concept,

Arrhenius acid is a species that produces $H^+$ ion in an aqueous solution and Arrhenius base is a species that produces $OH^-$ ion in an aqueous solution.

From the given options, option 1 chemical equation represents the reaction of an Arrhenius acid and an Arrhenius base. In this reaction, $HC_2H_3O_2$ produces $H^+$ ion in an aqueous solution and act as an Arrhenius acid, $NaOH$ produces $OH^-$ ion in an aqueous solution and act as an Arrhenius base.

While the other options does not represents the reaction of an Arrhenius acid and an Arrhenius base.

Reaction 2 is an example of combustion reaction.

Reaction 3 is an example of single-displacement reaction.

Reaction 4 is an example of double-displacement reaction.

Hence, the correct option is, (1)

The chemical equation that represents the reaction of an Arrhenius acid and an Arrhenius base is 1) HC2H3O2 (aq) + NaOH (aq) ---> NaC2H3O2 (aq) + H2O (I)

The reduced vapor pressure at high altitudes causes a liquid to boil at a temperature.A. Lower
B. Higher

Answers

Answer:

Lower Temperature

Explanation:

The boiling point is defined as the temperature at which the vapor pressure of a given liquid becomes equal to the external pressure or atmospheric pressure. Boiling point is mainly effected by following factors:

1) Inter-Molecular Interactions:

Greater the intermolecular interactions greater will be the boiling point because more energy is required to overcome these intermolecular interactions.

Example:

Water = 100 °C

Diethyl ether = 34.5 °C

Water requires more energy because it contains hydrogen bond interactions which are considered the strongest intermolecular interactions. While, Diethyl ether lacks Hydrogen bondings.

2) External Pressure:

The boiling point also varies with changing the external pressure for the same solvent. Greater the external pressure greater will be the boiling points and vice versa.

Example:

Water:

External Pressure Boiling Point

1 atm 100 °C

0.921 atm 98 °C

0.425 atm 72 °C

At higher altitudes (and thus lower atmospheric pressures), water boils at a lower temperature. This is because the lack of vapor pressure at that altitude doesn't constrain the speed of the molecules with barometric pressure. Therefore, the water begins boiling at a lower temperature. This is often a disadvantage because even if the water is boiling, it won't be hot enough for meals (which is why heat and temperature are distinct). That's why we have pressure cookers, which manage to keep a stable boiling point.
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Certain crops require a specific amount of annual rainfall to be successful. Which statement explains why coconut palm trees are successful in Florida?

Answers

Answer:

Coconut palm trees thrive in environments with temperatures above 64 degree Fahrenheit, that is tropical areas. Southern Florida is an ideal place for coconut palm trees to grow because it is tropical enough for them.

Explanation:

Because there is a lot of rain, it is a tropical area and has a tropical climate.

Hope this helps <3

Where do decomposers fit on the pyramid of trophic levels?

Answers

Answer:

we place the decomposers in a special place along the side of the pyramid

Explanation:

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