Chemistry Middle School

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Answers

Answer 1

Answer:

C - 23cm

Explanation:

Answer 2

Answer:

Explanation:

cuz si senor.

Related Questions

Complete the following sentence.
Scientists who study the relationship between parasites and hosts are called

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Answer:

Parasitologists

Explanation:

I believe the correct answer is parasitologists.

Other than water, what substance is formed when an acid and a base are combined in a water solution?

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Answer:

Salt. Hope this helps!!

Stacy made the following table to compare the functions of plant and animal structures, but she is missing a row title. Which of the following would best replace the X?

a table comparing the functions of different animal and plant structures. There is an unknown 'X' in the table. The skeleton in animals and the stem in plants provide support. The fur in animals and the waxy covering in plants provide protection. The ovaries in animals and the pistil in plants make 'X'

Eggs
Fruit
Sperm
Food

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I believe they make Eggs

All vertebrates are known to have two ovaries. Many invertebrates have testes and ovaries in a single animal. The ovaries in animals and the pistil in plants make eggs. The correct option is A.

What is pistil?

The female reproductive structure of the flower is known as the pistil. It consists of the structures like stigma, style, ovary and ovule. The major function of the pistil is to support the pollination process which finally leads to fertilization.

The stigma of the pistil receives the pollen and the style transports the pollen to the ovule. Pistils protects the ovule present inside it. The ovary is also the female reproductive organ in which the sex cells are produced called an egg.

The function of the ovaries is to nurture the eggs for the process which is called the ovulation.

Thus the correct option is A.

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What is the relationship between guard cells and stomata in plants?

Guard cells open and close the stomata to regulate the rate of transpiration.

Guard cells protect the stomata from insects and other pests.

Guard cells store carbon dioxide for later use by the stomata.

Guard cells absorb light energy from the Sun for use by the stomata.

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Guard cells use osmotic pressure to open and close stomata, allowing plants to regulate the amount of water and solutes within them. In order for plants to produce energy and maintain cellular function, their cells undergo the highly intricate process of photosynthesis . Critical in this process is the stoma.

Answer:

Guard cells open and close the stomata to regulate the rate of transpiration.

PLEASE HELP!!! THIS IS TIMED!!! PLEASE HELP

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I believe it’s..Balance chemical equation

Answer: ok ?

Explanation:

Which structures help plants control the rate of transpiration to prevent withering and eventual death?

chloroplasts and pores

chloroplasts and guard cells

guard cells and stomata

stomata and pores

Answers

Answer:

C - guard cells and stomata

Explanation:

Help me ill give you brainilest
(easy answer I'm in 5th grade T_T)
Bob thinks that plants get their materials for growth from the soil. Write a couple of sentences to explain why is Bob incorrect. (2 points)

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Answer: Plants get there nutrients from not only the soil but from the sun as well. The sun provides the plants with food/energy. The plants take in the sun light and turn it into glucose, glucose is used by plants to give them energy.

Explanation:

Plants use photosynthesis to grow with water and sunlight

Are there any steps of the rock cycle that do NOT connect directly to one another? Explain why this may be the case using at least two examples.

please helpp

Answers

Answer:

rocks are destroyed

explanation

ricks are never destroyed they descompose

There are no steps in the rock cycle that do not connect directly to one another. The rock cycle describes the continuous process by which rocks are formed, weathered, eroded, transported, deposited, and lithified, leading to the formation of new rocks.

What are the steps in rock cycle ?

Each step of the rock cycle is interconnected and depends on the other steps. For example, the formation of sedimentary rocks requires the weathering and erosion of preexisting rocks, the transportation and deposition of the resulting sediments, and the lithification of the sediments into rock.

Without the weathering and erosion of preexisting rocks, there would be no sediment to form sedimentary rocks.

Similarly, the formation of metamorphic rocks requires the heat and pressure of burial and tectonic activity, which in turn is influenced by the existing rock formations and geological processes of the area.

Another example is the formation of igneous rocks, which can occur through the melting and solidification of preexisting rocks, or through volcanic activity.

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Calculate the speed of a wave that has a wavelength of 8 meters and a frequency of 16 meters per second (m/s).

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Answer:

Assume that you move one end of a rope up and down just once to generate a wave in the rope. How long will take the wave to travel down the rope to the other end? It depends on the speed of the wave.

It would be 128 (m/s) You would multiply the wavelength and the frequency.

Brsinlirst if correct

(4)

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Answer:

the first answer is reflected and the second is absorbed

Explanation:

When white light shines on an opaque object, some wavelengths or colours of light are absorbed. These wavelengths are not detected by our eyes. The other wavelengths are reflected, and these are detected by our eyes.

Rocks can be weathered by expanding and _________ .

contacting
contracting
conducting
compacting

Answers

Answer:

compacting

Explanation:

the answer should be contracting!!

Please tell me witch one goes with what. It can be continental drift or plate tectonics. please tell me if you need help
1.Identify evidence that supports the theories of continental drift and plate tectonics.
2. Glossopteris plant found in several southern hemisphere continents.
3.The same rocks are found on either side of the Atlantic Ocean.
4.There are no ocean floor rocks older than 180 million years. The pattern of rock ages 5. shows new rock forming at mid-ocean ridges and spreading away from the ridge in both directions.
6. The shapes of South America and Africa appear to fit together.
7. The majority of earthquakes and volcanoes occur along easily recognized bands called tectonic plate boundaries.
8. Lystrosaurus reptile fossils are found on several Southern Hemisphere continents.
9. The same type of sediment deposits are found in several southern continents.
10. Magnetism in rocks of different ages don't point to the same North Pole locations.

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I’m not sure but people would more likely skip your question because it’s kinda long and I’m sorry to say that

difference between alloys and mixtures?

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Answer:

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Every two minutes the height increases

The color of a planet provides clues to its composition. From space, much of Earth looks blue because most of its surface is covered with water. The surface of Mars is much different from that of Earth. Much of its surface is made up of iron oxide, or "rust." Which color would you expect Mars to be?

Answers

Answer:

Mars would have different variations of brown, red, and orange.

Explanation:

Since different places of Mars have different substances or have different "ages" the color will be different.

Rust is formed because iron reacts to different substances, so there might be different weather patterns around Mars, and hence different colors of the rocks, iron, etc.

Hope this helps:)

Sorry just a 4th grader :(

I think this is correct though

Which of the following is a way to increase the solubility of a solid in water? Select all that apply.(PLEASE HELP ME! THIS IS TIMED)
(THERE IS MORE THAN ONE CORRECT ANSWER)

A.letting the mixture stand still for a long time

B.shaking the mixture of solid and water

C.raising the temperature of the water

D.crushing the solid

Answers

Answer:

C and D

Explanation:

the answer is c and d

Alice went camping with her family. She set up her tent in a grassy area. After two weeks, she noticed that the grass under her tent turned brown. Which factor most likely explains why the grass turned brown?

lack of water and sunlight

lack of oxygen and fertilizer

lack of soil and shade

lack of food and nutrients

Answers

lack of water and sunlight

Water and sunlight are necessary for photosynthesis to occur absence of these turned the grass brown.

What is photosynthesis?

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy through the process of cellular respiration.

Some of the energy which is converted is stored in molecules of carbohydrates like sugar and starches which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

The process begins with proteins absorbing light energy which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.

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NEED ASAP LIKE RIGHT NOW PLEASE HELP

what is a wave and how it transverses energy

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Answer:

wave means a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields

The data shows that recently the size of the raccoon population decreased. How will the decrease in the raccoon population affect the other populations? Be sure to explain whether the owl population, the duck population, and the frog population will change, and why. PLEASE HELP (science by the way!!!)

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Answer:

Some will loose their pray it being the racoons and they will too die because thy lost their food source.

Explanation:

Can someone help me with this

why do you think mauna loa erupts periodically instead of steadily

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Because it takes time for the pressure to build enough to push the lava out.

it takes time for the lava to push out

What would be the approximate time would at Location X? (Please make note of which direction Earth is spinning.)

A. 5:00 AM
B. 1:00 PM
C. 8:00 PM
D. 2:00 AM

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Answer:

Im pretty sure its B. 1:00 PM

Explanation:

what's the difference between erection\arousal and erosion

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Answer:

uhhh they are VERY different things

maybe you should look up what erection/arousal is?

erosion is what happens to layers of the Earth such as rock over time

Answer:

When a male is aroused sexually, the blood vessels in the penis relax and open up, allowing blood to fill them. Blood trapped under high pressure creates an erection. Ejaculation is a reflex action controlled by the central nervous system.

Explanation:

The ________________ flows out of a volcano. mantle magma silt lava

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lava because thats what comes out of a volcano when it erupts

Answer:It's Magma or Lava but I believe it's Lave.Your Welcome:Hope This Helped!

what is a 6-digit code with no spaces puzzle #7 Newspaper

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Answer:

583934

Explanation:

Newspapers #7

A 6-digit code withNewpapers #7?

Describe two ways you think a sound wave could be stopped or could change change direction.

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Answer:

Like any wave, a sound wave doesn't just stop when it reaches the end of the medium or when it encounters an obstacle in its path. Rather, a sound wave will undergo certain behaviors when it encounters the end of the medium or an obstacle. Possible behaviors include reflection off the obstacle, diffraction around the obstacle, and transmission (accompanied by refraction) into the obstacle or new medium

Answer:When sound waves move from one medium to another, there will be changes to the velocity (or speed), frequency and wavelength of the sound wave. This change in velocity can also result in a change of direction of the sound wave - also known as refraction

Explanation:

PLEASE HELP NO LINKS OR WEBSITES IF YOU DONT KNOW LEAVE ME ALONE THANKS THIS IS DUE IN 30 MINUTES

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The picture is blurry I can’t see the thing

I would love to answer this question but the picture you attached is wayyy to blurry

what is a 5 digit code with no spaces puzzle #2 energy transformation?

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14583 i think thats the right answer

Answer:

14583

Explanation:

i will give brainliest to correct answer - link = report
i cant give two people brainly so lmk if you want fr33 points

Answers

The answer is B. Hope that helped!

photosynthesis bc it’s the evolution of the plant or sumn

i will give brainliest to correct answer - link = report

Answers

Answer:

Explanation:

Cellular Respiration's formula is C6H12O6 + 6O2 → 6CO2 + 6H2O.

Photosynthesis's formula is 6CO2 + 6H2O → C6H12O6 + 6O2.

C6H12O6 is glucose

O2 is oxygen

CO2 is Carbon Dioxide

H20 is Water

Answer:

Explanation:

the table lists the speed of the light in four different materials at the temperature.

Answers

Answer:

Explanation:

light would travel the farthest in air

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Your hash array should start as size4. You will need to implement a rehashing function to maintain a load factor of 0.75. Collision resolution should be handled via separate chaining with linked lists.Other RequirementsRead in a CSV file from the command line when running the program.Convert the raw CSV data into the creature struct and add it to a HashMapMake sure you properly release all of your allocated memory.Format your code consistently.Function declarations, structs, and preprocess directives should be placed in a corresponding header file.Save your code for this problem ascreature_hash.(c|h).Creature structtypedef struct {char *name;char *type;int hp;int ac;int speed;} Creature;Example Run1. Search2. Add Creature3. Exit> 1Enter name: TerrasqueUnable to find "Terrasque"1. Search2. Add Creature3. Exit> 2Enter name: Storm GiantEnter type: Huge giantEnter HP: 230Enter AC: 16Enter speed: 50Storm Giant added at index 3.CSV file: Name, hp, ac, speed, typeRakshasa,110,16,40,FiendPriest,27,13,25,HumanoidBerserker,67,13,30,HumanoidFire Elemental,102,13,50,ElementalKraken,472,18,20,MonstrosityCentaur,45,12,50,MonstrosityMage,40,12,30,HumanoidHell Hound,45,15,50,FiendBasilisk,52,15,20,ElementalAndrosphinx,199,17,40,MonstrosityEfreeti,200,17,40,ElementalBalor,262,19,40,FiendChain Devil,142,19,40,FiendAdult Black Dragon,195,19,80,DragonAdult Blue Dragon,225,19,80,DragonAdult Red Dragon,256,19,80,DragonPlease help in C The area of the triangle below is 3.19 square inches. What is the length of the base? help please!!!!!! this is due soon if the southern latitudes get more sun exposure for longer hours per day than Northern latitudes predict the effects on the animals living in the two locations Darla is creating a family tree. She starts by writing down the names of her two parents. 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