All categories

2 years ago

A spontaneous endothermic reaction always:____.

Biology

1 answer:

mylen [45]2 years ago

7 0

A spontaneous endothermic reaction always <u>releases heat to the surroundings.</u>

<u />

<h3>Spontaneous endothermic reaction:</h3>

When the changes in entropy and enthalpy result in a negative Gibbs free energy, an endothermic reaction may occur spontaneously. If the rise in entropy exceeds the change in enthalpy, an endothermic reaction may occur spontaneously.

Baking soda reacts endothermically with other acids like hydrochloric acid. Only when the total free energy of the products is less than the reactants may chemical reactions happen spontaneously.

A spontaneous reaction is one that favors the creation of products under the reaction's current conditions. A bonfire that is raging and exothermic is an illustration of a spontaneous reaction (there is a decrease in the energy of the system as energy is released to the surroundings as heat).

Learn more about spontaneous endothermic here:

brainly.com/question/24376583

#SPJ4

You might be interested in

Hurry i’ll give you 50 point Part A: Define the Problem

laila [671]

Answer:

Despite the availability of cleaner energy sources, most of the energy used to power American homes comes from the

burning of fossil fuels such as coal and oil. The burning of fossil fuels releases carbon dioxide into the air. Carbon dioxide

is a greenhouse gas that contributes to climate change.

Why do you think it's a challenge to reduce fossil fuel usage in homes in the United States? How could the use of fossil

fuels affect the biodiversity in neighborhoods and the surrounding ecosystems?

В І ox x

Font Sizes

A-

Characters used: 0/15000

Part B: Conduct Background Research

Research is the first step in engin

5 0

3 years ago

Lynn Margulis developed the endosymbiont theory to explain the evolution of certain eukaryote organelles, such as chloroplast an

Flura [38]

Answer:

The answer is C. The cell took in another ancient prokaryotic cell, which began living inside it.

Explanation:

The Endosymbiont Theory explains the evolution of membrane bound organelles such as mitochondria and chloroplasts.
According to the theory, mitochondria evolved when an ameoba like organism engulfed bacteria capable of cellular respiration.
Similarly, chloroplasts were developed when the ameoba like organism engulfed cyanobacteria or blue-green algae capable of photosynthesis.
These organisms survived inside the ameoba over millions of years to develop into mitochondria and chloroplasts.
The fact that mitochondria and chloroplasts have their own circular DNA and ribosomes is evidence of the endosymbiont theory.

6 0

3 years ago

PLS SOMEONE I NEED HELP I WILL GIVE POIHTS AND I WILL MARK BRAINLIEST I WILL DO ANYTHING JUST PLS SOMEONE ANSWER ALL OF THIS I N

lukranit [14]

1. a) father (Rr), mother (rr)

b) from the attached file(1)

c) the possible genotypes are

Rr - 50%
rr - 50%

d) but from the information given above the only possible genotype for SpongeGerdy is Rr, because we were told that she was squarepants

e) Rr

f) from the attached file(2)

g) the possible genotypes are

RR - 25%
Rr - 50%
rr - 25%

h) the genotypes for squarepants are RR and Rr

therefore probability is (25 + 50)% = 75% or 3/4

i) the only genotype for roundpants is rr

therefore probability is 25% or 1/4

2. a) wilba - Ee , wilbur -EE

b) from the attached file(3)

c) the possible genotypes are

EE - 50%
Ee - 50%

d) the genotypes for round eye are EE and Ee

therefore probability is (50 + 50)% = 100% or 1

e) the only genotype for oval eye is ee

therefore probability is 0

3. a) squidward - BB . squidette - bb

b) from the attached file(4)

c) the only possible gene is Bb - 100% or 1

d) the genotypes for a light blue skin are BB and Bb

therefore probability is (0 + 100)% = 100% or 1

e) the only genotype for a light green skin is bb

therefore probability is 0

f) No, they are not. this is because they are heterozygous i.e.( they carry gene for a light green skin)

g) from the attached file(5)

h) the possible genotypes are

BB - 25%
Bb - 50%
bb - 25%

i) the genotypes for a light blue skin are BB and Bb

therefore probability is (25 + 50)% = 75% or 3/4

j) the only genotype for a light green skin is bb

therefore probability is 25% or 1/4

4 0

3 years ago

Explain the different Cell Cycle stages and what event occurs with each one.

Cerrena [4.2K]

The cell cycle is divided into two main stages: the interphase or nondividing stage and the mitotic or dividing stage. In interphase is the stage where a cell prepares itself by replicating its own genetic information and all of its organelles. The cell goes through this period of growth before it undergoes mitosis. The following are its three important phases. Gap 1 (G1) phase in the first gap, the cell increases in size preparation for division. During this stage, the cell prepares itself for DNA synthesis. Synthesis (S) phase DNA synthesis (replication) occurs. Chromosomes are also replicated which later on will become sister chromatids. Gap 2 (G2) phase this is the second gap. The cell continues to grow and synthesize RNA and proteins. There is also a G2 checkpoint to see if the cell is already prepared for mitosis. Some cells undergo the cell cycle only once, or they stop dividing. These cells will go to the Gap 0 (G0) phase, the resting phase of the cell. Nerve and blood cells remain in G0 phase for the rest of their lives. Thus, nerve cells and blood cells do not undergo mitosis. In mitosis once the cell is ready for cell division it will go to the next stage- mitosis. Mitosis is the process of nuclear division of a cell. Prophase is the of mitosis that takes up around 50-60 percent of total time for mitosis. It is subdivided into three substages: early, middle, and late prophase. In early prophase, chromosomes condense and start to coil up into short rods, the nuclear membrane disappers, and the centrioles appear and move toward the opposite sides (the poles) of the nuclues. In the middle prophase, mitotic spindle fibers are formed between the centrioles.Asters also formed on each side of the nucleus. The centrioles move towrdsthe poles. The nuclear membrane dissolves. In late prophase, chromosomes are attached to the centrioles through the spindle fibers. In metaphase, the centrioles have completed their migration toward the poles. The double-stranded chromosomes are aligned at the cells's midplane (equator). The centromeres of each chromosome are attached to the fully formed spindle fibers. In anaphase, the centromeres, followed by the chromatids, are separated when the spindle fibers shorten and pull the chromatids toward the end of the poles. The chromatids are now called chromosomes. Telophase is the last stage of mitosis which is usually referred to as the "reveres prophase" stage.In this stage, the spindle fibers disappear, the nuclear membrane and nucleoli reappear, and the chromosomes uncoil. Cytokinesis, follows mitosis. In animal cells, a cleavage furrow is formed until the membrane separates, forming two daughter cells. In plant cells, a cell plate is created that eventually develops into a cell wall.

5 0

4 years ago

1. One of the characteristics of water is that it can retain heat. Name an item in your household that shares this property and

klasskru [66]

Answer:

NUMBER ONE: a) a metal pan b)cover/blanket

Explanation:

a) it retains heat because when its heated, it heats fast, if cooled it cools fast

b) a blanket/cover actually contains heat thats how it gets you warm it traps the heat that enters it and keeps it heated.

7 0

4 years ago

Read 2 more answers