According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction and
thus mass is conserved. The reactant in this model is hydrogen peroxide Hydrogen peroxide decomposes to produce water and
oxygen gas. How many water molecules must be added to complete this model?
es)

Answers

Answer 1

Explanation:

H202 = H20 + O2

by balancing the this skeletal equation : he get

2H202 ( hydrogen peroxide) = 2H20( water) + O2 (oxygen)

so 1 more water molecules is needed to complete this model ..


Related Questions

Cancer is marked by uncontrolled cell growth and division. Which factor in excessive amounts contributes to this development

Answers

Answer:

Uncontrolled Meiosis is the correct answer for your question. Cancer: Cancer is a non-infectious, deadly disease that results in the uncontrolled growth of the tumor cells or cancer cells.

Explanation:

i hope that helps

What part of the world will you find rainforest in?

Answers

Ans: The largest rainforests are in the Amazon River Basin (South America), the Congo River Basin (western Africa), and throughout much of southeast Asia. Smaller rainforests are located in Central America, Madagascar, Australia and nearby islands, India, and other locations in the tropics.

Answer:

There are rainforests in South and Central America, Africa, Oceania (the islands around Australia), and Asia. Tropical rainforests cover only about 7% of the Earth's surface.

Explanation:

largest rainforests are in the Amazon River Basin (South America), the Congo River Basin (western Africa), and throughout much of southeast Asia. Smaller rainforests are located in Central America, Madagascar, Australia and nearby islands, India, and other locations in the tropics.

Two students went for a walk in a small pond ecosystem where they observed several interactions. Read their observation below to find out what they saw. Small fish were found feeding on the green algae. Fish, frogs and snails were harder to find after a family of raccoons came to the pond. Fish and frogs were observed catching insects. As the amount of green algae increased, more insects and snails came to feed on it. A sample of the pond water contained bacteria.

Answers

Answer:

a food web

Explanation:

What they saw was a food web, which refers to connections of food chains showing how energy and nutrients are transferred from one organism to the other.

In this example, we observe there are seven organisms (fish, algae, snails, insects, frogs, raccoons + bacteria contained in the pond) in focus here.

The green algae are Producers (because it produces its own food, not dependant on others)

The bacteria act as Decomposers. ( because they process organic waste into meaningful natural nutrients again)

The other organisms are Consumers. (because they are dependant on others for their nutrition).

Which of the following describes something that oceanographers study?

Ocean floor formations

Formation of groundwater

aquifers

soil conservations​

Answers

Answer:

ocean floor formation

Explanation:

Answer:

the first one

Explanation:

the ocean floor formation

write a paragraph of the Characteristics of Life

Answers

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

Explanation:

Brainliest please?

Please please help- 15 pts- PLEASE GET IT CORRECT

Answers

Answer:

I had this question before but I don't remember what is was but it's most likely c in this photo

where is the lithosphere layer located

Answers

Answer:

The lithosphere is located below the atmosphere and above the asthenosphere.

Explanation:

The lithosphere layer is located at the outermost solid layer of the earth where the rocks and mountains are present, and it is also considered the earth's crust and the uppermost part of the mantle.

What is the significance of the lithosphere of the Earth?

The lithosphere of the earth is significant because in this layer has all the earth's continents and ocean floors are contained, and it is the solid outer layer of the earth that has been providing the foundation for life on the earth's surface, including human civilization and other life forms. From this lithosphere layer, different earthquakes can be measured too.

Hence, the lithosphere layer is located at the outermost solid layer of the earth where the rocks and mountains are present, and it is also considered the earth's crust and the uppermost part of the mantle.

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How could you form a statement about your hypothesis based on the data?
What does that mean exactly?

Answers

Answer: it is asking if your hypothesis is different from your data or if it is close to what you thought would happen

Explanation:

A diver used 6000 J to dive off a rock cliff. If the diver took 2.5 seconds to reach the water, how much power was used?

Answers

Answer:

I believe the answer is 2,400 watts or 2.4 kilowatts.

What can we NOT learn from the fossils found in rock strata?

Answers

Answer:

The location of fossils in rock layers provides evidence of Earth's past landscapes. It is hard to guess the age of rock. Scientists have to act like detectives, piecing together a mystery to determine how long ago rocks formed. Fossils found in a particular rock layer help scientists determine the age of the rock.

Explanation:

so anything besides of what I just said...

Hope this helps you, may i have brainliest please.

What we cannot learn from the fossils found in rock strata is: the diversity of organisms at a certain location or during a certain time period.

Rock strata (layers) that are found in various parts of the world are usually different from one another because they all comprises distinct Earth's geological history, which are referred to as fossils.

A fossil can be defined as the mineral impression or remains of both living and non-living organisms that are prehistoric in nature.

This ultimately implies that, fossils are ancient organisms such as plants and animals that were formed into rocks.

Some of the information that can be learnt from the fossils found in rock strata are:

The time when a species of an organism became extinct.How a particular organism has changed over time.The exact age of each individual fossil through the use of  radiometric dating.

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Scientists have cloned goats so they can take out a protein in the goats’ milk and use it to make medicine. The goats are raised in a laboratory. The medicine that is produced can help with certain diseases that affect humans.

Which best describes a disadvantage of this scenario?

The goats will have more genetic variation.
The goats will become infected with the human diseases.
There are unknown health risks to the goats.
There could be many health risks to drinking the goats’ milk.

Answers

The scientists have created the artificial milk that’s the answer trust me it works

Answer:

c

Explanation:

How does the United States GDP compare with that of the rest of the world?

Answers

Answer:

Is this what you're looking for?

Explanation:

In 2018, the United States accounted for 15.2 percent of global gross domestic product (GDP) after adjusting for purchasing power parity (PPP). This share was expected to decrease to 13.86 percent by 2024, which is roughly a seventh of the global total.

Which statement best distinguishes stem cells from other body cells?

A Stem cells are any body cells, such as mature red blood cells, that lack DNA.
B Stem cells are unspecialized cells that are able to differentiate into various cell types.
C Stem cells are cells that have temporarily differentiated into specialized cells.
D Stem cells are cells in multicellular organisms that are unable to perform cell division.

Answers

Answer:

Explanation:-All stem cells from a given organism contain the same genome. -All stem cells have the capacity to differentiate into specialized cell types. -Stem cells replenish our skin cells and red blood cells.  i hope this helps

approximately 90% of albumen is water. the remaining 10% is made up of other substances such as reducing sugar. describe how you could safely test a sample of albumen for reducing sugar?

Answers

Explanation:

The common dietary monosaccharides galactose, glucose and fructose are all reducing sugars. Disaccharides are formed from two monosaccharides and can be classified as either reducing or nonreducing.

What trend in the complexity of life over time is seen through the fossil record?

Answers

Most animal and plant species we see in the fossil record are extinct, or no longer living. In fact, of all the species that ever lived, 98% are extinct. Animals and plants become extinct over time as a result of natural processes. Their habitat might change or a disease might wipe out a species.

The trend of extinction and difference in body parts in the complexity of life

over time is seen through the fossil record

Fossils refers to remains of living organisms which have been replaced in the form of rock particles due to its presence in the soil for a long period of time.

The fossils contain an understanding of the structures and characteristics

the animals had which is then compared to its present structures. This helps

to explain how the animals adapted to climate change through changes in

the structure, shape of parts of the body.

It also tells the location of animals and their different movements in response to challenges faced in the ecosystem.

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Briefly describe the process of tissue culture and state its importance.

Answers

Ans: Plant tissue culture is a practice of propagating plants under sterile conditions, often to produce clones of a plant. Process of tissue culture: Plants are grown in test tubes. A small part of the plant is allowed to grow on a nutrient medium containing all nutrients and hormones necessary for the plant growth.

A student observes the following onion cells in the microscope. What type of solution was added to the sample and describe the movement of water?

Answers

Answer:

?

Explanation:

Core material is thought to be mostly:

Answers

Answer: steel nickel

Explanation:

Most white blood cells destroy

Answers

Answer:

White blood cells: Serving as an army against harmful bacteria and viruses, white blood cells search for and attack and destroy germs to keep you healthy.

Explanation:

How many aminoacids are coded by the following mRNA sequence AUCGCAUACAAU

Answers

An amino acid is coded for every codon. A codon is composed of three nucleotides. This sequence contains 12 nucleotides, so it will code for 4 amino acids.

List following astronomical objects in order from smallest to largest ? planets , stars, moons, nebulae, galaxies , dwarf plants , universe , solar systems , meteors .

Answers

Answer:

;>;

Explanation:

warning: I am mostly guessing- so if u get this wrong I am sorry 100% sorry

here ya go!: universe, solar systems, galaxies, nebulae, meteors, planets, moons, dwarf planets, stars.

please help u will get 18 points:)

Answers

Answer:

depending variable

Explanation:

only thing changed in the experiment is uv light

PLEASE HELP!! I NEED THIS ANSWERED FAST PLEASE!!!
In humans, the form of cell division
in which the number of
chromosomes is halved to produce
gametes is known as -
a) mitosis
b) centrioles
c) meiosis
d) cytokines

Answers

the answer to this question is c meiosis

Answer: C. Meiosis

Explanation: "In humans, n = 23. Gametes contain half the chromosomes contained in normal diploid cells of the body, which are also known as somatic cells."

A strawberry farmer finds that, after a hard freeze, some of his strawberries are still alive. Which best explains why these stran
were able to survive?
A. They have larger leaves to protect the fruit than the other strawberries.
B. They have different genetic variations that cause them to be more resistant to cold temperatures.
C. They are able to reproduce more quickly than the other strawberries.
D. The color of the strawberries is darker, and they maintain their temperature better than other strawberries.

Answers

The answer is B. They have different genetic variations that caused them to be more resistant to cold temperatures.
Explanation:
Sorry if I’m wrong.

The statement that best explains why these strawberries were able to survive is as follows:

They have different genetic variations that cause them to be more resistant to cold temperatures.

Thus, the correct option for this question is B.

What is Genetic variation?

Genetic variation may be defined as the differences or alterations that are generally found on the genomic sequences of the individual of the same species. Genetic variation increases the chances of survivability of individuals among large population.

It may also be characterized as the existence of differences in sequences of genes between individual organisms of a species.

The genomic sequences of those strawberries that have resistance against cold temperatures must survive in extremely cold conditions are the rest are eliminated from their habitat.

Therefore, the correct option for this question is B.

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Which of the following identifies the type of tissue organ x made out of an physiological process is involved in?

Answers

Answer:

b

Explanation:

because me teacher just went over it

The cell membrane regulates the movement of molecules in and out of the cell. What other functions does the cell membrane perform?
A. It has no other functions.
B. It provides water to the entire cell.
C. It supports and protects the cell.

Answers

A cell membrane is semi permeable. It has no other function

Answer: The answer to the solution is a

Explanation:

A student builds a model of a DNA strand.
Which of these models of a DNA strand shows bases that are complementary to the ones on the student’s DNA model?

Just leave the number to tell me the answer so that way you don't have to type all the letters

Answers

The study of genes and inheritance is called genetics. In a gene pair, one allele is recessive and the other is dominant.

The correct answer to the question is option C

What is DNA?The molecules which store all the genetic information and regulate the formation of the protein, enzyme, and hormones.

All the nitrogenous bases are complementary to each other. For example, adenine binds to thymine and uracil binds to cytosine.

After binding all the things to the DNA, the correct answer is option C.

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41. Which of the following does not expend (use) energy?
a. diffusion
b. active transport
C. endocytosis
d.
a sodium-potassium pump

Answers

Answer: diffusion

Explanation: Diffusion expends no energy. Rather the different concentrations of materials in different areas are a form of potential energy, and diffusion is the dissipation of that potential energy as materials move down their concentration gradients, from high to low.

Among the options given, the process of diffusion does not expend or utilize energy. Thus, the correct option for this question is A.

What is Diffusion?

Diffusion may be characterized as a type of movement of individual molecules of a substance from an area of higher concentration to an area of lower concentration through a semipermeable barrier. This biological movement cannot utilize any metabolic energy.

According to the context of this question, active transport is a type of transport of individual substance against a concentration gradient that actively require the use of metabolic energy. Apart from this, endocytosis and sodium-potassium pump also required energy for successful function within the body of living organisms.

Therefore, the process of diffusion does not expend or utilize energy. Thus, the correct option for this question is A.

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PLS HELP ITS DNA MUTATIONS AND IDK WHAT TO DO

Answers

Answer:

6) insertion               7) deletion             8) inversion      9) substitution

10) substitution        11) insertion            12) deletion      13) substitution

14) inversion            15) insertion            16) inversion       17) deletion                

18) insertion             19) Inversion           20) inversion

Explanation:

MARK AS BRAINLIEST

Thank you

HELPPP!!!

WHAT IS THE OPPOSITE STRAND OF DNA OF DNA FOR THIS SEQUENCE: CATTAC​

Answers

GTAATG

c = g

t = a

Just switch the letter around to find the opposite of your given strand.

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