HELP, Please this can bring my grade down a ton! and Its due today!!!
Oxygen and carbon dioxide can diffuse through the walls of which blood vessels?
A.
arteries
B.
capillaries
C.
veins
D.
neurons
Answers
Answer:
C. veins.
Explanation:
Oxygen is used to breath. carbon dioxide is used for the veins.
hope this helped.
Answer:
B
Explanation:
capillaries! hope this helps fingers crossed hope u get a good grade
-emma :)
Related Questions
What happens to the atoms that make up hydrogen fuel as it burns?
Answers
Answer:
When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.
Explanation:
During digestion, what happens in the stomach?
A. All food molecules are broken down into smaller molecules by chemical reactions.
B. Some types of food molecules are broken down into smaller molecules by chemical reactions.
C. Water in the food passes into the blood and travels to other organs where it is used.
D. Food passes into the blood and travels to other organs where it is used in various reactions.
Answers
Answer:
A
Explanation:
Food is digested in the stomach for several hours. During this time, a stomach enzyme called pepsin breaks down most of the protein in the food. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.
Answer:
A
Explanation:
Which best describes the law of conservation of mass?
1. The coefficients in front of the chemicals in the reactants should be based on the physical state of the products.
2. Products in the form of gases are not considered a part of the total mass change from reactants to products.
3. When reactants contain both a solid and a liquid, the solid counts toward the overall mass and the liquid does not.
4. The mass of the reactants and products is equal and is not dependent on the physical state of the substances.
Answers
Answer: D
Explanation:
D) The mass of the reactant and products is equal and is not dependent on the physical state of the substances
NOTE: law of conservation of mass is even more observable in closed systems!
Have a great day/night
help pls i will give brainlest
Answers
Answer: its 5ft tall and 12 inches
Explanation:
A gaseous substance turns directly into a solid. Which term describes this change?
O deposition
O evaporation
O melting
O sublimation
Answers
Answer:
deposition
Explanation:
Sublmation- solid transforming into a gas, skipping the liquid stage.
eveporation- a liquid transformimg into a gas
melting- a solid transforming into a liquid
deposition- the opposite of sublimation (your anwser)
A gaseous substance turns directly into a solid. The term which is indicative of this change is deposition.
Evaporation is a process in which a liquid which when exposed to heat boils and converted into vapors of water. For example, the water is converted into water vapors. Melting is a process in which the solid substance when exposed to heat melts . In this a solid is converted into liquid. For example, a solid ice is melted into liquid. Sublimation is a process in which a solid is converted into a vapor state without being converted into a liquid. For example, dry ice in which the solid dry ice is converted into vapors in presence of air. Deposition is the process in which gaseous molecules aggregate and combine to form a solid. It is opposite of sublimation process. For example, conversion of water vapors to ice.Hence, deposition is the correct option.
Learn more about sublimation:
https://brainly.com/question/13773373
help me please with the connect it :,)
Answers
1. Potential
2. Potential
3. Potential
4. Kinetic
5. Kinetic (not sure)
6. Potential
7. KInetic
8. Potential
9. Kinetic
10. KInetic
11. Potential
12. Potential
Where does most fresh water exist?
Answers
Answer:
aquifers, ice caps, and glaciers I think
(C) aquifers, ice caps and glaciers
Argument 1
The water in the puddle that Claire observed evaporated. The highest temperature was 32°C (90°F). Since the puddle was there in the morning and gone later in the day, it must have evaporated.
Argument 2
The water in the puddle that Claire observed evaporated. Since the highest temperature was 32°C (90°F), we know that it was a warm day. When water gets hot, it can change from liquid to gas. This is called evaporation. I think the water became so warm that it became water vapor (gas), and that’s why the puddle was gone by the afternoon.
1. Which argument is more convincing?
2. Why is the argument you selected more convincing?
Answers
2. It gives more details
Copper (Cu) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction. In this reaction, all of the copper and all of the sulfur react. The scientist needs to determine how many grams of copper sulfide the reaction will produce. In 1–2 sentences, explain how to calculate the amount of copper sulfate this reaction will produce. Use the law of conservation of mass in the explanation.
Answers
Answer: Do you know what the Law of Conservation of mass say Matter is neither created nor destroyed. Therefore, you have started with 12.7 g Cu and 3.2 g S on the left for a total of 15.9 g; therefore, you must obtain 15.9 g of product(s). If Cu2S is the only product there must be 15.9 g Cu2S.
Explanation:
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
What are all the breeds of dogs and how many breeds of dogs are there?
Answers
Answer:
In the United States alone, the AKC's dog breed list currently includes 190 dog breeds. Worldwide, the FCI lists 360 officially recognized breeds.
Explanation:
There are approximately 400 separate breeds of purebred dogs worldwide. A purebred dog is considered to be one whose genealogy is traceable for three generations within the same breed
There are currently more than 340 different breeds of dogs recognised throughout the world.
Scientists have discovered a colony of potential organisms on the Planet Moby and named them "Maxoids." Read the information below that scientists have gathered on Maxoids and decide whether Maxoids are living or nonliving things. Explain how you came to this conclusion.
Through testing and observation, scientists have recorded the following characteristics of Maxoids. Maxoids reproduce via sexual reproduction. One parent carries the Maxoid eggs for 12 weeks before they hatch. After hatching, juvenile Maxoids continue to grow for seven months. To acquire energy for growth, Maxoids consume a peculiar liquid substance native to the planet Moby. The Maxoids' cells use this energy, as well as large amounts of water, to carry out important functions. The Maxoids are sensitive to changes in internal temperature. Sometimes they dig holes and lay in them to cool down if they get too warm.
Answers
The Maxoids are living things because they possess the characteristics of living things.
What are living things?Living things are things which have life in them.
Living things are identified by the characteristics which make them living.
The characteristics of living things include:
Movement - living things are able to move all or parts of their bodyRespiration - living things are able to break down food substances to produce energyNutrition - living things are able to take in food substancesIrritability - living things are able to respond to changes around themGrowth - living things are able to increase in size and massExcretion - living things are able to remove waste substances from their bodiesReproduction - living things are able to produce new ones of their kindConsidering the Maxoids;
They are able to reproduceThey take food in the form of a liquid substanceThey are sensitive to changes in internal temperatureIn conclusion, the Maxoids are living things.
Learn more about characteristics of living things at: https://brainly.com/question/280237
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Drag the tiles to the correct boxes to complete the pairs.
Match the descriptions to the processes.
Answers
Answer:
put up a picture
Explanation:
so someone can see it and solve it
there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP
Answers
Answer:Trade winds blowing in a curved manner
Explanation:Because i like the answer
can someone explain what these are used for our teacher never taught us about it
Answers
1st one so nonthing gets in your eyes
2nd one so nonthing gets on your shirt
3rd one is to wash your eyes when stuff gets in them
4th is when a fire breaks out and you use that to get rid of it
5th is for when someone is on fire you wave them with it
SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend, Sandy, told him that he should try using Clean-O detergent, a new brand of laundry soap she found at Sail-Mart. SpongeBob made sure to wash one pair of pants in plain water and another pair in water with the Clean-O detergent. After washing both pairs of pants three times each, the pants washed in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water. 1) What was the problem SpongeBob wanted to investigate? 2) What was the problem SpongeBob wanted to investigate? 3) What is the dependent variable? 4) What should be SpongeBob’s conclusion?
Answers
Answer:
1) SpongeBob investigated whether Clean-O detergent is a good laundry soap. 3) the dependent variable is the color of the pants/how clean the pants were. 4) SpongeBob's conclusion should be that Clean-O detergent is not a good detergent.
Explanation:
You didn't have #2 - it was the same question as #1
Answer:
Hi there!
Explanation:
Questions;
1) He wanted to investigate if clean-o detergent will clean his pants....
2) The independent variable is what the pants were washed in (clean-o detergent)....
3) The dependent variable is, how clean the pants were after washing them...
4) The conclusion should be, the detergent that his friend sandy had told him.. Didn’t work & Clean-o detergent didn’t work any better than plain water.
Hope this helps!
~Have a great day!~
If you have any questions, feel free to ask!
What kind of rocks would you expect to see on Mars? What evidence supports your response?
Answers
I need help asap pleasee
Answers
Why can't a volume of water be compressed or expanded like a volume of air in a closed syringe system?
Answers
Answer:
It is all about pressure. When you plug upon the nozzle, there is no way for the pressure of the fluid to rise above a certain value, so pushing in is opposed by the fluid pushing back on your finger, it gets hard! However, if you open the valve and allow fluid to squeeze out, then the pressure can be relieved a bit and that allows you to keep the piston moving down. That is applying an unbalanced force that allows the fluid to accelerate from zero velocity inside the barrel to some higher velocity through the nozzle.
Explanation:
How does the behavior of the substances depends on their structures at atomic and molecular levels?
PLIS ANSWER ASAP
Answers
can praseodymium conduct electricity
Answers
Answer:
praseodymium can conduct electricity as it is one of it's conductivities
What are the reactants in this chemical reaction?
Remember: Reactants are what react together to form products.
A) Sodium Sulfite and Hydrochloric Acid
B) Water and Sulfur Dioxide
C) Hydrochloric Acid and Sulfur Dioxide
D) Sodium Chloride and Water
Answers
Answer: a
Explanation: because, as we know reactants are what react to form a product. In the chemical reaction given, if you add sodium sulfite and hydrochloric acid it will form sodium chloride + water + sulfite dioxide.
Answer:The answer is A
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answers
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as
Where is the DNA stored in a cell?
Answers
Answer: nucleus
Explanation:
Which element is represented by this model?
Be; Beryllium
N; Nitrogen
C; Carbon
F: Fluorine
Answers
Answer: C; Carbon
Explanation: The model is showing it has 6 electrons, 6 protons, and 6 neutrons. Therefore the element, carbon.
Answer:
Carbon
Ok it needs more characters
In an electrical wire, if instead of copper, plastic wire is used. Would it conduct electricity?Justify your answer.
Answers
Answer:
No, a plastic wire would not conduct electricity. This is because plastic is an insulator that does not allow electric current to flow through it. In a wire, electrical conductivity is provided by the movement of charged particles - typically, electrons. Copper is an excellent conductor of electricity because it has a high number of free electrons that are not bound to atoms and can move through the wire very easily. However, in a plastic wire, the tightly bound electrons of its atoms do not allow for the free flow of charges, thus preventing the passage of electric current.
Please help me por favor :'(
Answers
plssssssssssssssssssmejepleplele
Answers
Answer:
Yes the two of the answer is True
please help me before june 13th
Place the following items in the correct order to show how a voice could be recorded and saved using a digital device.
Answers
Answer:
1. person sings
2. sound converted into signals
3. sounds converted into ones and zeros
4. the digital pattern
5. the analog
Explanation:
Sodium chloride (NaCl) is made from ___ of sodium (Na) and ___ of chlorine (Cl).
Blanks: One Atom and Two Atom
Answers
Answer:
one atom, one atom.
Explanation:
Sodium chloride is made from one sodium atom and one chlorine atom.
Sodium has a charge of +1, Chlorine has a charge of -1. These cancel each other out leaving only one atom for both sodium and chlorine.