Which of the following indicates that an endothermic reaction has occurred?
O Heat is released
O water is formed
O Salt is produced
O Temperature decreases

Answers

Answer 1
Heat is released because endothermic is the absorption of heat
Answer 2

The  following indicates that an endothermic reaction has occurred when temperature decreases, which is in the last option as the endothermic reaction needs heat to carry out the reactions.

What is the significance of the endothermic reaction?

There are two types of reactions, such as the reaction that requires heat to form the product, the endothermic reaction, while some of the reactions that release heat are called the exothermic reaction, and the exothermic reactions have more energy at the reactant side than the product side. In the case of a endothermic reaction, the product usually has more energy than the reactants, and the change in free energy here is positive.

Hence, the following indicates that an endothermic reaction has occurred when temperature decreases, which is in the last option as the endothermic reaction needs heat to carry out the reactions.

Learn more about the endothermic reaction here.

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Related Questions

Describe why Canada geese migrate to meet their basic needs.

Answers

Answer:

Canada Geese migrate because when winter gets harsh the lakes, ponds, and streams all freeze over so then the Canadian Geese can't eat, so they migrate to somewhere where there is open water. ... From their original home in the North the Canadian Geese fly all the way down to the south.

Explanation:

Answer:

Canadian geese eat grass, during the winter in Canada the snow either covers all pf the available grass, or it dies. So they travel to warmer, southern regions where their grass is still abundant.

Is gneiss a fracture or cleavage?

Answers

Answer:

Cleavage

Explanation:

I believe it is a cleavage

Please help I am stuck

Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.


combustion


atmosphere


soil organic matter


fossil fuel


plant biomass




?



?



?



?

Answers

Answer:

Carbon cycle is very important for the plants and animals that are divided into 4 steps and these steps are:

1.The carbon enters the atmosphere in the form of carbon dioxide.Example: respiration and combustion.

2.The carbon dioxide present in the environment is used by the plants and  plants expel oxygen after the process of photosynthesis.

3. Animals present in the environment eat the plants and pass on the carbon in the food chain. They exhale carbon dioxide into the environment.The plants and the animals die after a certain period of time.

4. The body of plants and animals is consumed by decomposes and the carbon is returned into the atmosphere in the form of carbon dioxide else fossils of plants and animals are formed which contains carbon.

Explanation:

did the quiz

Which of the following statements correctly relates mutations and survival rates of animals?

Mutations sometimes improve the chances of survival for an animal.

Mutations always improve the chances of survival for an animal.

There is no relationship between mutations and the chance of survival for an animal.

Mutations never improve the chances of survival for an animal.

Answers

The first statement is correct :)

A student wants to investigate the force of gravity. The student has an apple and a marble. What would be the best way for the student to use these materials? Place the apple on the floor. Roll the marble so it hits the apple. Put both objects on a desk. Push them forward at the same time. Hold both objects at the same height above the floor. Drop them at the same time. Place the marble on a desk. Place the apple next to the marble so the objects touch.

Answers

Answer:

Put both objects on a desk

Explanation:

The best way to use the materials to investigate the force of gravity would be to put both objects on a desk. The force of gravity can thus be obtained by measuring the distance between the objects as well as their masses.

According to Newton's law of universal gravitation, the force of gravity (F) between two objects is directly proportional to the product of their masses (m and M) and inversely proportional to the square of the distance (d) separating them.

Mathematically,

     F = G [tex]\frac{mM}{d^2}[/tex] where G is a constant.

define the terms related age an absolute age

Answers

Answer:

hope the answer helped you

Explanation:

absolute age(true age) The age of a geologic phenomenon measured in present Earth years, rather than its age relative to other geologic phenomena (compare relative age)

Relative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.

Name three parts of the world that have a great need for wastewater treatment,
and explain each in some detail.

Answers

Answer:

Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment. Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface.

Explanation:

Hope that helps:)

ASAP PLEASE!

What substances are used up as the reactants in cellular respiration?

O2 and C6H12O6
O2 and H2O
CO2 and H20
CO2 and C6H12O6

Answers

Answer:

Cellular Respiration reactants are glucose and oxygen.

Explanation:

enzyme activity can be affected by the following check all that apply

Answers

Answer:

enzyme activity is affected by many factors such as temperature, concentration and ph  note that enzymes work best within a certain ph ranges

Explanation:

The surface area/volume ratio is an important factor for one celled organisms. As a cell's volume grows, its surface area/volume ratio ______________, making it more difficult to acquire enough nutrients via diffusion. Question 7 options: increases freezes decreases stays the same

Answers

Answer: decreases

Explanation:

The surface area to the volume ratio will decrease as the volume of the cell increases or the cell gets larger. Therefore, if the volume of the cell increases beyond the certain limit the cell will not be able to imbibe nutrients as not enough material can pass through the cell membrane to accommodate the increase in volume of the cell.

What process must happen before this process depicted below?

Answers

Answer:

hopes it helps

Explanation:

In glycolysis, glucose molecule is converted into pyruvate molecules .

It can't be cellular respiration because it starts always with glucose i.e glycolysis. But here it is the process after glycolysis (starting from pyruvate) and changing into lactic acid. It's an aerobic respiration called as lactic acid fermentation.

Answer:

Glycolysis

Explanation:

What is the primary source of energy for all
living organisms?

Answers

Thw primary source is the Sun

Answer: the sun

Explanation:

Please give me 5 stars!! :)

write one sentence using both words in the pair.
Taiga, swamp

Answers

Answer:

I went to visit a Taiga, which can sometimes be like a swamp.

it is very cold in taiga biomes unlike in hot and humid swamps

A marshy area dries up, and most of the organisms in a population of flowers die. However, some of the flowers have adaptations that allow them to survive the change. If the land stays dry, what will the population of flowers be like several generations from now?

A. The population will have greater genetic diversity because the additional stress caused by lower water levels will result in increased immigration.

B. The population will have the same genetic diversity as when the area was marshy.

C. The genetic diversity will be less than in the original population, as more flowers will have the adaptations to live in the drier conditions.

D. The flowers will all die off because they could not survive in the drier conditions.

Answers

Answer:

C

Explanation:

All that is left are the plants capable of surviving in dry conditions; whereas before there were plants that thrived in more marshy conditions. Therefore decreased genetic diversity. The adaptations of the plants will be much less diverse.

In the chemical reaction of burning wood, the wood and air combine to form
coal and ash. Which sentence is true?
A. The wood and air are reactants, and the coal and ash are products.
B. The wood, air, coal, and ash are all reactants.
C. The wood, air, coal, and ash are all products.
D. The wood and air are products, and the coal and ash are reactants.

Answers

The correct answer is A.

- The cane toad has been introduced to some ecosystems to reduce the number of
pests that damage crops. In the areas where they have been introduced, none of the
predators are immune to the protective toxins the toad produces. What is a probable
outcome from the introduction of the cane toad in the following 10 years?

Answers

Answer:

D

Explanation:

The crops will not deplete the soil. The Frog will not lose its toxin because nothing bad comes from that trait. A predator cannot adapt to a toxin in the span of only ten years. The insect population should deplete because the frog should multiply and concur the population of pests since the frog doesn't have any predators.

what is the answer?

Answers

Answer:

[tex]\boxed {\tt 3}[/tex]

Explanation:

An element only has one type of atom and cannot be broken down by chemical means.

Let's analyze the answer choices.

1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.

2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.

3. This has one type of atoms, so it is an element.  

Therefore the best answer choice is 3.

Give one word answer for the following. responsible for hereditary characteristics in living organisms.

Answers

Answer:

genes

Explanation:

Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes. The specific location of a DNA sequence within a chromosome is known as a locus.

Claim Evidence Reasoning. Evaluate the following claim: Meiosis is different than Mitosis.

Answers

Answer/Explanation:

Yes, although they have similarities, meiosis and mitosis are different.

Similarities

Meiosis and mitosis are both types of cell division that results in the production of daughter cells.

They go through similar processes of prophase, metaphase, anaphase, and telophase.

Differences

However, mitosis produces two genetically identical diploid daughter cells from a diploid parent cell.

Meiosis produces four genetically different haploid cells from a diploid parent cell.

There are two rounds of cell division in meiosis, and only one round in mitosis.

What would happen if the squirrel population were eliminated

Answers

It would disrupt the food chain

Is toxic chemical pollution a nonpoint source pollution or a point source pollution? I need an actual answer.

Answers

Answer:

Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas. Oil, grease and toxic chemicals from urban runoff and energy production.

Explanation:

What is not needed for active transport?
A. Carrier protein
B. ATP
C. A high concentration gradient
D. Cell membrane

Answers

The cell mebrane it works as a shield no need for it to transport
i think D hope this helps

What can be done to preserve the biodiversity of organisms?

Answers

Answer:

Here are several things you can do!↓

Explanation:

Government legislation.

Nature preserves.

Reducing invasive species.

Habitat restoration.

Captive breeding and seed banks.

Research.

Reduce climate change.

Purchase sustainable products.

PLZZZZZZ I NEED HELP ASAP I ONLY GOT A LIL TIME PLZZ HELP :)

Answers

Answer:

B. The first generation will not have short plants. The short trait will return in the second generation.

Explanation:

If T is for Tall and t is for short, then the first generation doesn't have any short offspring. We can rule out answer choices A and D.

The second generation results in TT, Tt, Tt, tt.

TT is a tall Offspring.

Tt is a Tall Offspring, with a small t as a recessive trait.

tt is a short offspring because both the recessive traits (t) are together.

We can rule out option C.

That leaves us with the correct answer being B. The first generation will not have short offspring, but will pass it on to the second generation, which will have a short offspring (25% chance of having short offspring).

Which Scientific model could be used to predict the properties of an element?
(a) closed loop system (b) Punnett square (c) Periodic Table (d) water cycle chart

Answers

It should be the periodic table.

Water is a polar molecule. c. Water is an ionic compound.

Answers

Water is made up of covalent compounds not Ionic and it is a polar molecule

Match the correct definition with its word
rough endoplasmic reticulum protein synthesis
lysosome store calcium ions
nucleus create lysosomes
mitochondria create energy through respiration
smooth endoplasmic reticulum break down cellular food and waste
Golgi body controls cell activity

Answers

Answer:

rough endoplasmic recticulum synthesis protein to the cell.

Answer:

rough endoplasmic recticulum synthesis protein to the cell.

Explanation:

I really need these answers

Answers

Answer:

Down There

Explanation:

1) The Bushmaster has the highest mortality rate.

2) The Southern United States Copperhead has the least mortality rate.

3) I can determine that the Bushmaster's venom works the fastest due to it being the one with most deaths produced. While the U.S. Copperhead's venom might work the least since most people survived its venom.

4) The Black-necked Cobra and the Puff Adder

5) 10 types of snakes.

Hope it helps!! :D

2. The Southern US Copperhead has the lowest mortality rate

Which object in space emits light because it releases energy produced by nuclear fusion?
A. Earth’s Moon
B. Halley’s comet
C. Venus
D. Polaris

Answers

b if i’m not mistaken

Answer:Polaris

Explanation: Nuclear Fusion

ANSWER ALL THE QUESTIONS

THE QUESTIONS IS ON THE PHOTO ​

Answers

Answer: (1.) several hierarchical levels in an ecosystem, that share the same function in the food chain and the same nutritional relationship to the primary sources of energy (2.) that only ten percent is available to the next level  

Explanation:

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