Answer:
false because trachea connects to the lungs and oesophagus connects from the mouth to the stomach
Answer:
false
Explanation:
It starts with the mouth. The esophagus is a long tube that connects the mouth to the stomach, which is within the ribcage. The stomach is a muscular bag-like structure and forms a J-shaped pouch and is located under the ribcage. The stomach connects to the small intestine.
What is 1.0 x 10^4 L in nL?
Answer:
= 10000000000000 Nanoliters
Explanation:
1.0 x (10^4) L =
10 000 L
10 000L converted into Nanoliters
= 10000000000000 Nanoliters
Hope this helps
what happens when an object in space revolves
Answer:
Objects in space follow the laws or rules of physics, just like objects on Earth do. Things in space have inertia. ... The movement of things in space is influenced by gravity. Gravity is an important force that can change the course of bodies in space or pull them off of one course, or even cause them to crash together.
Explanation:
i Hope This Helps :3
Answer: It is Turing on an axis, in a 360* motion. OR, since you didn’t specify, it could be revolving around the sun, meaning it is traveling around the sun once.
(30 POINTS)
Which of the following increases the concentration of OH- ions?
Acid
Base
Water
Salt
Answer:
Acid btw I am new in Brainly
Which phrase is the best definition of matter?
A. The amount of physical material in an object
B. Anything that takes up space and has mass
C. Anything that can be measured
D. A particle made up of two or more atoms
SUE
The amount of physical material in an object
van dar waals are the dominant molecular force in the sodium chloride.
Answer:
Recall the two conceptual steps necessary to dissolve a solute and form a solution
Key Points
There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility.
The first conceptual step is dissolution, which corresponds to the force of the solvent-solvent and solute-solute intermolecular attractions that needs to be broken down.
The second conceptual step is solvation, which corresponds to the force of the solute-solvent intermolecular attraction that needs to be formed in order to form a solution.
Many intermolecular forces can contribute to solvation, including hydrogen bonding, dipole-dipole forces, Van Der Waals forces, and ion-dipole interactions.
Term
intermolecular forcesattractive and repulsive forces between molecules
The strength of the intermolecular forces between solutes and solvents determines the solubility of a given solute in a given solvent. In order to form a solution, the solute must be surrounded, or solvated, by the solvent. Solutes successfully dissolve into solvents when solute-solvent bonds are stronger than either solute-solute bonds or solvent-solvent bonds.
Qualitatively, one can determine the solubility of a solute in a solvent by using the rule “like dissolves like”. In general, solutes whose polarity matches that of the solvent will generally be soluble. For example, table salt (NaCl) dissolves easily into water (H2O) because both molecules are polar.
Intermolecular Forces and Their Importance in Solution Formation
There are two conceptual steps to form a solution, each corresponding to one of the two opposing forces that dictate solubility. If the solute is a solid or liquid, it must first be dispersed — that is, its molecular units must be pulled apart. This requires energy, and so this step always works against solution formation (always endothermic, or requires that energy be put into the system).
#pa follow and heart po para sa iba pang answer at pa brainlest answer na den
A material that resists changes in shape and volume would be
A. solid
B. liquid
C. gas
D. plasma
Answer:
solids
Explanation:
solids aren't very malleable of prone to change shape and/or volume so...
Which has the strongest intermolecular forces?
A B C or D
Answer:
A
Explanation:
35. A line graph uses_ on the x-axis
a. categories
b. time
C. dependent variable
d. control group
Is soapy water water good for plant irrigation (give answer in accordance to chemistry)?
Answer:
soapy water is not good for plants irrigation that is what I learn
Answer:
Soapy water is not good for plant irrigation because soapy water contains sulphate in it which is not good for the development of plants.
Explanation:
hope this helps
Why is ice melting considered to be a PHYSICAL change?
A. the water molecules do not change chemically and are still H2O
B. the water molecules change into new chemicals and are no longer H2O
C. They are chemically mixed and won’t for H2O
D. They will just be the same liquid (already did this and it wasn’t it)
Answer:
A. the water molecules do not change chemically and are still H2O
Explanation:
The arrangement of molecules is the only change that occurs
[tex].[/tex]
A gas has a density of 5.56 g/L. What would the mass in kilograms of 1 m^3 of this gas
Answer:
Mass is 5560 grams
Explanation:
[tex]{ \boxed{mass = density \times volume}}[/tex]
Density is 5.56 g/L
Volume is 1 m³ = 1,000 L
Substitute the following to get mass:
[tex]mass = (5.56 \times 1000) \\ { \boxed{ \boxed{mass = 5560 \: grams}}}[/tex]
What is the function of a vacuole?
A) Thick solution that fits all cells
B) Stores food, water, and waster
C) transports proteins
D) helps with cell division
Answer:
B stores food, water and waster
Describe the process of making the four major macromolecules.
Answer:
Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.
Explanation:
Have a great day!
Answer:, , nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers. I forgot to add carbohydrates and proteins also my bad
i just started learning aboit this too
Explanation:
CCC Systems and System Models Liquid gallium changes to a gas at 2229°C.
Describe how a model of gaseous gallium would compare to the model of liquid
gallium shown in the picture.
Gaseous gallium will consist of atoms separated from each other by a large distance and do not experience inter-particle attractive forces.
There are three states of matter;
SolidLiquidGasMatter can exist in all these states of matter depending on the extent of inter-particle attractive forces in the substance.
Inter-particle attractive forces are strongest in solids hence they have a definite shape and volume and do not flow.
Liquids have weaker inter-particle attractive forces than solids hence liquid particles can flow. Liquids have a definite volume but not a definite shape.
Gases have almost no inter-particle attractive forces between particles hence gas particles are separated by large distances and move at very high velocities. A gas does not have definite shape or volume.
A model of gaseous gallium will show atoms of gallium separated by large distances and do not experience inter-particle attraction.
A model of gas particles is shown in the image attached to this answer.
Learn more: https://brainly.com/question/11067389
The observed mass of the sun is 6.270 * 10 ^ 26 g but the actual mass of sun is 5.97*10^ 24 kg . The percent error in measurement is 4,78 %
Answer:
False hoge iska answer
Explanation:
Please follow me
The birdseed above is a mixture of several different types of sizes of seeds. Is the mixture a…
A) homogeneous
B) heterogeneous
Answer:
Answer B: Heterogeneous
Explanation:
im pretty sure this is it if its not im really sorry
please help me with my question
C2H2OH is the answer
I am not sure but I think
What is the formula mass of a compound with 2 aluminum atoms and 3 oxygen atoms?
Answer:
[tex]\boxed {\boxed {\sf 101.96 \ amu}}[/tex]
Explanation:
Formula mass is the sum of the atomic masses of the atoms in a molecule. Essentially, it is the mass of 1 molecule of a compound.
We are given a compound containing 2 aluminum atoms and 3 oxygen atoms. We will use the Periodic Table to look up the atomic masses of the 2 elements in the compound.
Al: 26.981538 amuO: 15.999 amuThese are the atomic masses of 1 atom of the element. Remember we have 2 Al atoms and 3 O atoms. We multiply the element's atomic mass by the number of atoms of that element in the compound.
2 Al: 26.981538 amu *2= 53.963076 amu 3 O: 15.999 amu * 3=47.997 amuNow we add the atomic mass of 2 Al atoms and 3 O atoms.
53.963076 amu + 47.997 amu = 101.960076 amuWe may want to round this answer to the hundredth place. The 0 in the thousandth place tells us to leave the 6 in the hundredth place.
101.96 amuThe formula mass of a compound with 2 aluminum atoms and 3 oxygen atoms is approximately 101.96 atomic mass units.
oops i dont think i meant to do this
Which of the following correctly
describes a physical change in
matter?
A. matter keeps its chemical makeup, but a
change in size, shape, volume, or state of matter
occurs
B. particles leave and a new substance is made
C. a new substance is formed by atoms
combining in different ways
Answer:
the option A is right matter keeps it's chemical makeup like size shape volume and state
The diffrences between wood and stone
Wood:
Wood comes from trees, that are growing out of the ground, but not TECHNICALLY part of the earth.
Stone:
Stone is a part of the earth, created by a lot of minerals combining, and molten rock hardening a LOOOOOOONG time ago.
What would happen if you poured gasoline into water? *
the gasoline would float on top of the water
the water would float on top of the gasoline
the gasoline would be suspended in the middle of the water
the water would be suspended in the middle of the gasoline
9. A 35.2-mL, 1.66 M KMnO4 solution is mixed with 16.7 mL of 0.892 M KMnO4 solution. Calculate the concentration of the final solution.
Answer:
I think that the answer is 0.79M
Hi, I need help please :)
When using an electronic device, such as an electronic balance, the measurement displayed on the screen is assumed to have one estimated digit included. in fact, you'll often sec the estimated digit changing rapidly, because there is fluctuation in the estimate. Explain why it is important to record the zero in the measurement shown to this right,
The zero calibration of the electronic balance allows to maintain the precision of one digit.
Electronic measurement equipment has a mechanism to set the zero of the measurement every time the equipment is turned on, this procedure must be carried out to eliminate:
Possible existence of some material on the plateChanges in the characteristics of the balance completes due to agingCchanges in ambient conditions, for example temperatureChanges in the mass of the plate due to deformation or breakage.
The methods of regurgitating the zero of the balance consists of measuring the weight without masses and bringing this value to zero, in general by changing some adjustable parameter of the balance, for example magnetic field current, reference level with a beam of light.
With this calibration it will be achieved that there is always a precision digit in the readings.
With Electronic Balance Calibration it is possible to have a pressure digit
learn more about electronic balance here:
brainly.com/question/13206375
Answer:
The zero is the estimated digit.
Explanation:
If the zero was left off of the measurement, people would assume the tenths place was the estimated digit.
How to solve this? Pls help!!
Which statement accurately describes test tubes and beakers?
A.Beakers and test tubes both have rounded bottoms.
B.Test tubes are better for transferring liquids than beakers.
C.Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
D.Beakers can be held over a flame; test tubes cannot.
Beakers are flat bottom laboratory glassware that can be used to hold liquid in the laboratory. A test tube is a laboratory glassware that is unmarked and can be used to heat a liquid over a flame.
The correct answer is option C: Beakers have liquid volume (mL) markings on the side of them; test tubes are unmarked.
Several glassware are very useful in the laboratory especially when dealing with liquids.
Two among these important glassware are beakers and test tubes. A beaker is mostly used to hold liquids while a test tube is used to both hold and heat liquids if need be during a laboratory experiment.
Beakers are graduated by the side while test tubes are unmarked.
Learn more: https://brainly.com/question/10684030
Which part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube experiments?(1 point)
Atoms can form new substances.
Atoms are indivisible.
Atoms are small.
Atoms can join together.
The part of John Dalton’s theory was disproved by J.J. Thomson’s cathode-ray tube experiments is; "Atoms are indivisible".
One of the major postulates of the Dalton's atomic theory is that the atoms of elements are "indivisible".
This idea resounds from the earliest ideas of Greek philosophers concerning the atom.
Through the cathode-ray tube experiments, J.J. Thomson discovered sub-atomic particles.
This nullified the idea that atoms are indivisible.
Learn more: https://brainly.com/question/13157325
El desplazamiento de la Tierra alrededor del Sol se conoce como
Answer:
Hola Amigas y Amigos
Explanation:
La Tierra gira alrededor de su eje, al igual que una peonza gira alrededor de su eje. Este movimiento giratorio se llama rotación de la Tierra. Al mismo tiempo que la Tierra gira sobre su eje, también orbita o gira alrededor del Sol. Este movimiento se llama revolución.
¡¡Espero que esto ayude!!
iiTen un día maravilloso!!
Use the word stable to explain why the alkali metals tend to lose 1 valence electron.
Answer:
becoz vvv is always with you
Answer:
Alkali metals have one valence electron on their outer shell. They are more stable when they have eight valence electrons so they tend to loose that one electron and obtain a full octet, therefore become stable
