Answer:
D
Explanation:
N₂ is not a compound because it is not made up of two or more different elements - it is only made up of nitrogen atoms
Hope this helps!
with the development of technology why is muscle atrophy occurring more often what can you do to stop it THIS IS A SCIENCE QUESTION
Answer: Technology is causing people to sit around more while using it. Therefore people are not exercising as much. This causes the strength of muscles to go away. A way to help stop this is to get exercise for at least one hour a day.
Explanation:
In class we made salt crystals. To do this we put a supersaturated solution of salt into a glass of water. After a few days the water evaporated and the salt crystals were left on the paper cutouts. When the salt dissolved in the water was this a physical change or a chemical reaction? Please explain your answer in detail.
Answer:
Dissolving a solid in liquid, such as table salt in water, is a physical change.
Explanation: Its a physical change because only the state of the matter has changed
GIVING 40 POINTS PLZ HELP!!!!!!!!
Answer:
to find heart rate put 2 fingers on your wrist or neck also what one do you need help with
Explanation:
can someone solve this question please
Answer:
MgO + 2 HNO3 → Mg(NO3)2 + H2O
Explanation:
Based off of the simulation pulley gizmo; how many people did it take to lift the armchair with a fixed pulley? (Look at Activity A question 2)
Question 5 options:
1
3
4
5
Answer:
IN WHICH GRADE YOU ARE????
A submarine fills a special storage area known as a ballast with water in order to increase its density. This allows it to dive deeper in the ocean. When a submarine needs to rise rapidly, compressed air is used to push the water out of the ballast. What effect does replacing the water in the ballast with air have on the submarine?
Answer:
the submarine floats after replacing the water with the compressed air
Answer:
The submarine will rise.
Explanation:
To get a submarine to surface, the main vents in the top of the tank are closed and high-pressure compressed air is blown into the ballast tanks, forcing the water out through the flood ports at the bottom of the tank. This increases the vessel's displacement.
In this project, you will practice calculating work and speed using the proper formula. You will also use a data table to record and analyze your data. For each question, you will complete a row in your data table to record the details, and your results. Don't forget to use proper units of measurements in all of the parts of your table!
pls help asap mark brainyist can't spell sorry
Answer:
CHECK THE IMAGE
Explanation:
So im very confused!!! if you want to answer then plz read the instructions and plz give proper answer !!! Need help asap!!!!!!!!!!!!!!!!
What will a soccer player need to do to change a ball’s position?
1. He must apply gravity to the ball so that the ball will move.
2. He must weigh the ball to determine the motion that needs to occur.
3. He must set the ball in motion by applying a force in the desired direction.
4. He must identify the location of the ball.
First one to answer will get brainliest!
Answer:
He must set the ball in motion by applying force in the desired direction.
Explanation:
That is how the soccer player will change the ball's position.
Have a good day :)
Answer:
4. He must identify the location of the ball.
Explanation:
If a soccer player needs to change his position, then he will need to identify the location of the ball.
hope this helped.
I HAVE A D- IN SCIENCE PLEASE HELP
Complete the sentence.
In chemical reactions, a product is _________.
A. any substance that is to the left of the arrow
B. any substance that is made of the greatest number of atoms
C. any substance that is made from the least number of atoms
D. any substance to the right of the arrow
Answer:
D - Any substance to the right of the arrow.
Explanation:
A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.
speed =________
ate divided by time
rate divided by distance
distance divided by time
time divided by rate
I need answer asap! Plz someone help ! Ill give brainliest!
Answer:
Distance divided by time is the answer. :)
Explanation:
I NEED HELP ASAP PLZZZZ
Answer: 2 :)
Explanation:
I took the test
What type of fossil forms when the impression from the remains of an organism is filled in with soil and hardens into the shape of the original organism?
Answer:
i belive its a "Mold fossil"
Explanation:
PLS HELP (science)
Match the following molecules with the number of atoms they contain.
1. 2Fe
seven
2. 2Al 3O 2
eight
3. 4O 2
two
4. 5C
five
5. H 2SO 4
ten
Answer:
hello I will answer ur question if u answer mine
Explanation:
Plz help! Write your answer in complete sentences ! Write a proper answer! 1st one to answer will get a brainliest!
Answer:
the name for CaCO3 is Calcium Carbnate, and its relations with coral reefs is that the process for making said compuond happens within coral, and is considered the building block for coral reefs.
Explanation:
hope this helps!
A food scientist is determined to create a mango that looks exactly like a mango but tastes like salmon. Can this be achieved through artificial selection? Why or why not?
Answer:
depends on the artificial 'materials' used and the food scientist
Explanation:
If the food scientist is skilled enough and works hard enough this it might be possible but this does seem like a difficult task i personally doubt that this could be done until next few years. :)
What type of force is known for exerting an upward force on objects in a fluid?
1. buoyant force
2. friction force
3. gravitational force
4. magnetic force
The First person to answer will get the brainliest!!!!!!
Answer:
A. buoyant force.
Explanation:
It is like a buoy, but it is force pushing an object while in water.
hope this helped.
Please help!!! Hydrogen and oxygen undergo a chemical reaction to form water. How much water will be created if hydrogen has a mass of 3.56 g and the oxygen has a mass of 25.32 g?
Actual answers only please :)
Answer:
22.88g
Explanation Hope this helped <3
What is inertia?
1 . the tendency of an object to stay at rest or in motion
2. the energy of an object because of its position
3. a force that pulls objects toward each other
4. a force that slows an object down
Answer:
A. The tendency of an object to stay at rest or in motion.
Explanation:
Interna makes stuff stay on motion or in place.
Answer:
the tendency of an object to stay at rest or on motion
help pls due todayyyy
Answer: Below
Explanation:
Steal wool + oxygen (fire): The steel wool is a grayish color and has a rough surface. Oxygen is transparent It looks like a powder, and like if it was rusted steel wool but then broken apart and turned into a powder Well Iron oxide is 7 grams and steel wool combined is 7 grams so you can say that the mass was conserved Yes, this is a chemical change because the steel wool rusted and rust is a chemical change, so iron oxide is cause because if a physical change.
Egg + Heat : The egg has a yellow yolk in the middle while there is some type of liquid at the border of the yolk, but it is clear, the heat is hot but transparent The egg turned into a delicious food called an omelet what was yolk staid as a liquid but got a tad harder, but the transparent border around it turned white It was conserved because the eggshell was 4 grams and the fried egg is 41 grams It is a chemical change because it results in the formation of new particles, and the chemical bonds break up and new ones are formed.
Water + Heat The water is a clear liquid, while the heat is very hot but transparent The water turned into a type of oxygen -Water Vapor- If 5 g of water becomes a gas it becomes 5 g of water vapor. The mass of the liquid water is simply transferred into the mass of the newly formed water vapor. There was no chemical reaction because the water vapor can be turned back to water also it just changed from a liquid to a gas and did not change its composition
Zinc + Hydrogen Chloride Zinc: a white/silver metallic solid. Hydrogen chloride (dilute hydroelectric acid) a transparent, colorless liquid with a very low pH (acidic). Zinc "dissolved" in hydrogen chloride, while emitting a colorless gas. The liquid remains a colorless liquid, possibly still having a low pH from the unused acid. The colorless gas collected in a test tube gives a popping sound when ignited with a burning wooden splint, so it is not air embedded in the zinc, nor dissolved in hydroelectric acid. Well although the zinc chloride is 12 grams and not 15 the gas that was released was 3 grams and as we all know 3 + 12 is 15 so you could say that the mass was conserved The production of a new substance (most probably hydrogen) from the reaction of the two reactants. When a few drops of the liquid product are evaporated on a watch glass, a white residue is left.
When a few drops of the liquid hydroelectric acid are evaporated on a watch glass, there is no residue. This proves that a new product (hydrogen gas), (white powder, zinc chloride) is produced instead of zinc being physically dissolved in hydroelectric acid.
Sodium Hydroxide + Copper Sulfate Sodium hydroxide is a turbid solution and copper sulfate is in form of bright blue crystals. When their solutions are mixed with each other, a pale blue precipitate of basic copper hydroxide & a solution of neutral salt sodium sulfate will be formed. The sodium hydroxide and the copper sulfate combined make a total of 67 grams and the product is split because the sodium sulfate is 47 grams and the copper hydroxide is 20 grams but all together it is still 67 grams so you could say that the mass was conserved The proof of the reaction is the appearance of pale blue precipitates of basic copper hydroxide & a solution of neutral salt sodium sulfate.
How does the Coriolis effect impact the Gulf Stream and the Brazil Current?
It turns the Gulf Stream southwest and the Brazil Current northeast.
It turns the Gulf Stream northwest and the Brazil Current northeast.
It turns the Gulf Stream northeast and the Brazil Current southwest.
It turns the Gulf Stream northeast and the Brazil Current northwest.
Answer:
Honestly, I think it is C.
Explanation:
Brazil is in the south, so that's why it is C.
hope this helped.
An object has a mass of 960 g and a volume of 15cm3 what’s the density?
Explanation:
density = mass ÷ volume
mass = 960g
volume = 15³ = 15 × 15 × 15
= 3375 cm
density = 960 ÷ 3375
= 0.28 g/cm³
Oxygen in the air can react with wood when a match is burned. Ash is produced.
Which statement would be true?
A. The atoms of the ash did not exist before.
B. Ash has similar properties to oxygen.
C. The atoms of wood and oxygen disappear during the burning.
D. Ash is a different substance than wood.
Answer:
D. Ash is a different substance than wood.
Answer:
D the atoms of ash did not exist before
Explanation:
because I jnwo .... k
why does atumn start in diffrent months of the year in north america and south america
Answer:
because the sun is further away due to the earth's axis
Think about the ecosystem that you live in.
Write a response below describing it in complete sentences.
4)
Use each of these terms correctly in your description:
• community
• ecosystem
• biotic
• population
• individual
• abiotic
Answer:
this is an answer for YOU to answer. this is about YOUR ecosystem
Explanation:
just say what it's like, is it a community? is it populated? explain.
Through all the food chain, food web, chemical cycles, etc., biotic and abiotic forces interact within an ecosystem. Therefore, the functional and structural unit of nature is the ecosystem.
What is ecosystem?The functional and structural unit of nature is the ecosystem. This relationship between living and nonliving elements is handled by the ecosystem. All living things, including plants, animals, and microorganisms, rely on non-living substances to survive and keep the natural world in balance.
Individual, population and community play important role in running a ecosystem. Terrestrial Ecology: A terrestrial ecosystem is an ecosystem that is found on land. Grassland, desert, and tundra ecosystems, for instance.
Therefore, the functional and structural unit of nature is the ecosystem.
To know more about ecosystem, here:
https://brainly.com/question/19267717
#SPJ2
Iodine-138 decays by beta decay. What element does it produce?
[tex] {xe}^{138} [/tex]
Explanation:
the bottom number would be 54. This is because you add one to 53 to make it 54 and you add 0 to 138.
HELPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!! 30 POINTS!!!!!!!!!!!!!!
Answer:
What is this please send questions properlythen i will answer it properly
____________ limits or stops the growth of bacteria.
Antibiotics
Antibiotics
Chemicals
Chemicals
Photosynthesis
Photosynthesis
Vaccines
Answer:
Vaccines
Explanation:
Helena uses the same force to move an object that has a mass of 12 kg and an object that has a mass of 5 kg. She predicts the 12 kg object will have a greater change in motion. Is she correct?
No, the object with the smaller mass will have a greater change in motion.
No, both of the objects will have an equal change in motion.
Yes, the object with the larger mass will have a greater change in motion.
No, neither object will have a change in motion.
Answer:
No, the object with the smaller mass will have a greater change in motion.
Explanation:
Hope this helps!
Which phrase describes a feature of groundwater?
-feeds rivers
--provides habitats
-makes up 75% of fresh water
--used for hydroelectric power
Answer:
number 1
Explanation:
Groundwater mainly contributes the water into the surface water like streams, rivers, and lakes.
Groundwater feeds rivers describes it feature.
What is ground water?Groundwater refer to the water that is below Earth's surface and they infiltrate the fractures of rock formations and spaces between sediments.
Ground water replenish the rivers, streams and lakes.
Therefore, Groundwater feeds rivers describes it feature.
Learn more on groundwater from the link below.
https://brainly.com/question/9617