Answer:
The lung
Explanation:
The model of the respiratory system made by Megan consists of two balloons. The first balloon stretched across the bottom of the bottle represents the diaphragm which contracts and relaxes to allow air in and out of the lungs. The balloon inside the bottle represents one lung.
Breathing in causes the balloon inside the bottle to be filled with air. This is preceded by the expansion of the diaphragm which makes the lungs to be filled with air. Breathing out causes a contraction of the diaphragm thus making the lungs to let out air.
Answer:
You're Lungs
Explanation:
When you breathe in, air flows into your lungs. When you breathe out, air flows out of your lungs. The balloon inside the bottle is like one of your lungs.
Can someone use (biodiversity) in a sentence
Answer:
There is a lot of biodiversity in this seafloor.
Explanation:
Biodiversity is just the diversity in species and animals in a certain environment.
Sierra knows that the reproductive organs of an animal are responsible for making offspring. Which plant structure can be compared to the reproductive organs of an animal?
Answer: wait im gonna search some info.
Explanation:I come back with an asnwer for you
URGENT PLEASEEEE HELP
A functional group is a specific arrangement of atoms in an organic compound that is capable of characteristic reactions
Is this true of false
PLEASE HELPP NO LINKSS
Answer:
That is true
Explanation:
:D
How many molecules of ammonia would there be in 40.0 grams of ammonia?
1.42x10^24 molecules
40.0 grams NH3 (6.02x10^23/17.0 grams NH3)= 1.42x10^24 molecules
Please help me I’ll mark you brainiest
What is the density of an object with the mass of 204 grams? It displaces 17ml of water. please help!
Answer:
12 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
We have
[tex]density = \frac{204}{17} \\ = 12[/tex]
We have the final answer as
12 g/mLHope this helps you
indica lo que harías en el laboratorio para preparar: 100 mL de una disolución al 2% V/V de etanol.
Answer:
Explanation:
Mide 2mL de etanol, añadelo a un matraz aforado, pon agua hasta llegar a 100mL
Which of the following is true of oxygen?
A. Oxygen is an element because its most basic unit is a single type of atom.
B. Oxygen is a compound because its most basic unit is a single type of atom.
C. Oxygen is a mixture because its most basic unit contains more than one particle.
D. Oxygen is a compound because its most basic unit contains more than one type of particle.
Answer:
A. Oxygen is an element because its most basic unit is a single type of atom.
Explanation:
Oxygen is the chemical element with the symbol O and atomic number 8.
Which is the best example of a compressionforce? Throwing a football - squeezing a stress ball - playing tug of war with friends - making a ballon animal. I think the subject is chemistry it’s science tho
Answer:
squeezing a stress ball
Explanation:
Think of compression as reducing the amount of space something takes up. When you squeeze a stress ball, it gets smaller or deformed and the amount of space it takes up gets smaller.
When the Florida summer brings hot temperatures, what seasonal changes can be seen in plants?
Answer choices:
Florida plants are full of leaves and make fruit.
Florida plants begin to sprout seeds.
Florida plants go dormant from the heat.
Florida plants start to change color.
Answer:I think it’s the first option because of high temperatures there would be more evaporation and precipitation which would give plants water and exposure to the sun makes plants make food because of the photosynthesis process.
Explanation: Have a nice day and hope this helps : )
Weathering of Earth's surface can have which of the following effects? *
8 points
Building mountains
Creating hurricanes
Breaking down rocks
Causing lava flow
Today is Earth day. What is one thing that you can do at school or at home to help protect our home, planet Earth?
NaCl +H₂SO4=HCl +NaHSO4
Balance this equation
Answer:
Actually this question is already balanced
Explanation:
so, the answer of this question is same as the answer
4) What is the order of the energy pyramid.?
Convert .08 feet into centimeters
I WILL GIVE 15 POINTS PLS I NEED THIS BEFORE THE CLASS FINISHES IN 30 MINN
The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)
Answer:
likely be the same
Explanation:
this is because we have one color that both atoms share (green). both sample 1 and sample 2 have green and another color. yet, since they share one color, they are likely similar
1. Place these unknown pH test papers in order from most acidic to most alkaline.
B
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14
pH color chart
A. Paper D, paper C, paper B, paper A
B. Paper B, paper A, paper C, paper D
CPaper C. paper D paper A, paper B
D. Paper D paper o paper A, paper B
Answer:
D. Paper D, paper C, paper A, paper B
Explanation:
Please check the attached image for a diagram showing clearly the pH colour chart
pH measures how acidic or alkaline a solution is. The pH scale ranges from 1 - 14
Solutions with a pH less than 7 are acidic
Solutions with a pH equal to 7 are neutral
In the image, test papers D and C occur on the left, thus, they are acidic
Solutions with a pH greater than 7 are alkaline
pH test papers are used to test to test how acidic or alkaline a solution is
DNA is compacted into rod-like structures called
and a
segment of the DNA code on it is called a ?
Answer:
Gene
Explanation:
during photosynthesis, water and carbon dioxide react to form oxygen and sugar how do the products differ for the reactions?
Answer: I think its that cellular respiration results in water, carbon dioxide, and ATP but photosynthesis results in oxygen and glucose so they are opposites
Explanation: HAVE A GREAT DAY :)
!!!PLEASE HELP!!!
Circle the element in each of the following pairs with the greater atomic size:
a) lithium or boron
b) magnesium or strontium
c) cesium or lead
d) sodium or argon
Help please
If you have 100 grams of a radioactive isotope with a half-life of 10 years:
Part A How much of the isotope will you have left after 10 years?
Part B. How much of the isotope will you have left after 20 years?
Part C. How many half-lives will occur in 40 years?
fill in the chart
Answer:
Time >> Amount 0 100 g10 100 g / 2 = 50 g20 50 g / 2 = 25 g30 25 g / 2 = 12.5 g40 12.5 g / 2 = 6.25 ga partial forest food-web is shown
Answer:
Bobcats are consumers of marmots and grouses
Explanation:
CAN I PLEASE GET SOME HELP?
You accidentally spilled an unknown liquid on a lab bench. It spreads out across the lab bench and quickly evaporates. What can you infer about the structure of the molecules? Explain your reasoning.
Answer:
See note under explanation
Explanation:
That the particles have mostly non-polar structures or, have a very low degree of electronegativity (i.e. very low or no attractive interactions) so that particle - particle interaction favors the gas phase when not in an equilibrium based environment. That is, a closed container of liquid were liquid phase is in equilibrium with gas phase. However, when not in a closed container; i.e., spilled, particles evaporate rapidly moving into the gas phase from liquid phase.
Hope this helps. :-)
GIVING BRAINLIEST!! PLEASE HELP
The boiling points of the halogens F2, Cl2, Br2 and I2 increase in that order. This is best attributed to the differences in _____________________________.
A)covalent bond strengths
B)dipole forces
C)london dispersion forces
D)hydrogen bonding
Answer:
huh
Explanation:
Science Question 1: Please Answer!
When a plant is hypertonic,
what is happening in the plant
cell, and what will the plant
look like?
Answer: If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple
A boulder sits at rest on top of a mountain. What conclusion can be made about the forces acting on the boulder
Explanation:
Since, the boulder is at rest. This means that there is an equilibrium of forces acting on the boulder.
According to principle of equilibrium of forces a body can be in position of rest only when net force acting on body is zero for translation equilibrium and net moment acting on the body must also be zero for rotational equilibrium.
Therefore, net forces and net moment acting on the boulder is zero.
1. How is energy transported from where it is generated to homes?
2. How is some energy lost as it is transmitted and how can this be minimized?
Plz answer fast its worth 30 points
Answer:
1. (put in simpler words so no one knows you got it off of brainly)
The electricity that flows to our homes is generated in power stations. From here, it flows through large transmission lines, which carry it to substations. Finally, distribution lines carry electricity from substations to houses, businesses, and schools.
2. (put in simpler words so no one knows you got it off of brainly)
The transmission over long distances creates power losses. The major part of the energy losses comes from Joule effect in transformers and power lines. The energy is lost as heat in the conductors. This can be minimized by
answer choice 1: reducing technical losses including: replacing incorrectly sized transformers, improving the connection quality of conductors (power lines), and increasing the availability of reactive power by installing capacitor banks along transmission lines.
answer choice 2: (just in case answer choice 1 isn't what you're looking for)
You can reduce losses in your home by spreading out your electricity use evenly throughout the day, instead of running all your appliances at once.
Explanation:
hope this helped <3
pls help me
What is the mass in grams of 2.64 mol of sulfur dioxide, SO2?
Answer: The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles SO2, or 64.0638 grams.
Hope it helps.
It is defined as the number of particles per mole of a substance. *
a. Molar ratio
b. Mole
c. Avogrado's number
Answer:
Avogadro's number
Explanation:
Avogadro's number
defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.