When volcanoes errupt, they can release oxides of sulphur that react with tiny droplets of water in the air to form sulphuric acid. Sulphuric acid can be considered a(n) __________.
A)
greenhouse gas
B)
primary pollutant
C)
biofuel
D)
secondary pollutant
E)
ecotone

Answer:

aquifers, ice caps, and glaciers I think

Answer:

Was it in the ground or on the ground?

Explanation:

He should ask that because the red substance could be rust and if it was left in the ground then it wasnt left out so oxygen couldnt get at it so it  

Answer:

COMPOSITION  

Explanation:

The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change.

Is there any difference in the appearance, smell, or simple display of a sample of matter without a change in composition?

Answer:

Leaf: Hey Roots, this is Leaf. I'm running low on supplies here. Can you send some over?

Roots: Hey Leaf, of course. What kind of supplies do you need?

Leaf: I need more water and nutrients. Can you send some my way?

Roots: Sure thing, we'll get on it right away. How much do you need?

Leaf: Just enough to keep me going for a few more days. Can you also send some sunlight my way?

Roots: Sorry, we can't help with that one. But we'll make sure to send enough water and nutrients to help you out.

Leaf: Thanks, Roots. You're the best. Let me know when the delivery is on its way.

Roots: Will do, Leaf. Hang in there. Delivery should be there soon.

Answer:

Litmus is a natural acid-base indicator extracted from a type of lichen. If you have red and blue litmus paper, you can test different solutions for whether they are acids or bases. Blue litmus paper turns red when a solution is acidic; red litmus paper turns blue in basic solutions

Explanation: Hope this helped

Answer:

Helium. Symbol for Helium is: He . The atomic number (Z) is: 2. The mass number (A): 4. Common human uses of the element: Because it is very unreactive, helium is used to provide an inert protective atmosphere for making fiber optics and semiconductors, and for arc welding. Helium is also used to detect leaks, such as in car air-conditioning systems, and because it diffuses quickly it is used to inflate car airbags after impact. present in a common molecule: Helium does not bond with the other atoms. if its dangerous: helium can cut off oxygen supply or can cause an embolism if a person inhales too deeply.

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Carbon. Symbol: C. The atomic number (Z): 6. The mass number (A): 12. Common human uses of the carbon: is used in metal smelting. It is particularly important in the iron and steel industries. Graphite is used in pencils, to make brushes in electric motors and in furnace linings. Activated charcoal is used for purification and filtration. The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules. Individual carbon atoms have an incomplete outermost electron shell. If its dangerous: Elemental carbon is of very low toxicity. Health hazard data presented here is based on exposures to carbon black, not elemental carbon. Chronic inhalation exposure to carbon black may result in temporary or permanent damage to lungs and heart.

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Sodium. The Symbol: Na. Atomic number: 11. Mass number: 23. Common human uses : Sodium is important for many different functions of the human body. For example, it helps cells to transmit nerve signals and regulate water levels in tissues and blood. Sodium is the sixth most common element on Earth, and makes up 2.6% of the Earth's crust. The most common compound is sodium chloride. The most common compound of sodium is sodium chloride (common salt). If its dangerous: Sodium is essential to human health, but too much sodium is poisonous. Sodium poisoning can cause seizures, coma, and death.

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Nitrogen. Symbol: N. Atomic number :7. Mass number: 14. Common human uses :Human activities, such as making fertilizers and burning fossil fuels, have significantly altered the amount of fixed nitrogen in the Earth's ecosystems. If its present in a common molecule: Common compounds with nitrogen atoms include ammonia (NH3), nitrous oxide (N2O), nitrites, and nitrates. Nitrogen is also found in organic compounds such as amines, amides, and nitro groups. If its dangerous: High concentrations of nitrogen gas can be particularly harmful to human health. Nitrogen can displace oxygen from ambient air within an enclosed space leading to a dangerous build-up of the inert gas.

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Potassium. Symbol: K. Atomic number: 19. Mass number:39.  Common human uses: Potassium is a mineral that plays many important roles in the body. Food sources of potassium include fruits (especially dried fruits), cereals, beans, milk, and vegetables. Potassium is most commonly used for treating and preventing low potassium levels, treating high blood pressure, and preventing stroke.  If its present in a common molecule: Potassium forms many important compounds. Potassium chloride (KCl) is the most common potassium compound. It is used in fertilizers, as a salt substitute and to produce other chemicals. Potassium hydroxide (KOH) is used to make soaps, detergents and drain cleaners. If its dangerous: Having too much potassium in your blood can be dangerous. Potassium affects the way your heart's muscles work. When you have too much potassium, your heart may beat irregularly, which in the worst cases, can cause heart attack.

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Answer:

The correct answer's B, give brainly if this helped :)

Explanation:

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option 1 that is energy is released as a result of atomic fission.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. Energy is released as a result of atomic fission.

Therefore, the correct option is option 1 that is energy is released as a result of atomic fission.

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Answer:

C. Methane.

Explanation:

Methane is a chemical that can kill you. A, B and D all won't kill you because that is a significant contributor to greenhouse gasses.

hope this helped.

Answer:

D. the average daily number of sunspots will increase in 1945

Explanation:

I guessed on study island and shockingly i got it right

Throughout 1945, there will be an increase in the average number of sunspots every day. Because they are cooler than other solar surface regions, sunspots appear dark. Thus, D option is correct.

What is sunspots?

Sunspots are a phenomenon that manifests as transient, darker-than-the-neighboring-areas spots on the photosphere of the Sun.

They are areas of lower surface temperature brought on by magnetic flux concentrations that prevent convection. Sunspots typically develop in pairs with the opposite magnetic polarity within active zones.

Sunspots can persist for a short while, from a few days to a few months, before eventually dissipating. Sunspot change size as they migrate around the Sun's surface.

Solar telescopes on the ground and in orbit around the Earth are used to study sunspots. In addition to various kinds of filtered cameras, these telescopes also employ filtration and projection techniques for direct observation.

Therefore, The average daily number of sunspots will increase throughout 1945.

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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:

Answer: EGG

Explanation: RAW

Answer:

Table sugar has more calories than aspartame. A teaspoon of table sugar (4 grams) contains approximately 16 calories, while a teaspoon of aspartame (0.5 grams) contains only 0.4 calories. This is because table sugar is a carbohydrate and contains four calories per gram, while aspartame is a non-nutritive sweetener and is virtually calorie-free.

Answer:

C. Metals are ductile, meaning they can be pulled into wires

Hey love! So I believe you’re asking if it’s transformation, reflection, or rotation. In this problem, it would be reflection! I can attach a visual example if needed, but imagine you’re flipping the shape like a pancake- first down, and then to the right. It should line up with the shape on the bottom. Does that make sense? I can find a different way to explain it if needed ! ^^

For fossil fuel: Oil spills and leaks during extraction or transport can pollute water sources.

For nuclear power: An uncontrolled nuclear reaction can result in widespread a contamination of water.

Answer:

Solar Eclipse happens when the moon gets between the sun and the earth, the moon gets all the light and blocks the earth from getting sunlight.

Hope this helps ;) ❤❤❤

Answer:

Explanation:

Plants

Animals

Food chain

Plants

Animals

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:

carbon dioxide is produced.

CO2 is the chemical formula.

Answer:

Water requires more energy per gram of liquid to change its temperature. Because the input of the heat from the hotplate and the microwave is the same across trials, and water takes longer to heat up to a given temperature than olive oil, we can conclude the water can hold more heat energy than olive oil.

Explanation:

pls markas brainly

impulse= force ×time

1) 0.1×200=20

2) 5×5.5=27.5

3) 10×2=20

4) 25×0.8==20

so the answers are 1,3,4

Answer:d

Explanation:I’m not 100% sure how to explain it but I’m almost for sure it’s d.

Answer:

D

Explanation:

I think it would be D. Refraction is an example of matter (being water) bending light as it travels through another medium (from air)

Answer:

This one should be REALLY easy for everybody to know but the answer is anything that can pose a hazard to your eyes

Explanation:

Answer:cyclone

Explanation:

Answer:

hold on i will help you soon

The period of time when sexual intercourse takes place between two organisms is called mating. However, all the matings need not end in fertilization.

The gestation period is a time when the embryo develops completely into a fetus. This is usually from the time of fertilization to the time of giving birth.

Let us take the comparison of the gestation period of 3 mammals.

The gestation period of a cow varies from 279- 287 days. The mating between the bull and cow occurs during the heat or oestrus period of the cow. At that time the bull mounts on the cow or vice-versa may happen during the mating period. This is termed bulling.

In the case of horses, the gestation period is 320-380days. The mating ritual in a horse is a bit different than in a cow. It usually has three phases of sexual behavior which includes: courtship, mating, and post mating behavior. During courtship, the stallion which is the male horse will approach the mare, prance, sniff her, nuzzle her, and groom her. The mare which is the female horse may squeal, kick, or move away to show the stallion that she is not ready. When the mare is receptive to breeding, she may stand still, deviate her tail, and urinate, leading the stallion to mount her. It usually breeds well in pastures than in controlled environmental breeding conditions.

Whereas in camels, the gestation period is far longer than in cows and horses. It is about 360-440days. The male camel displays its organ called a dulla to show out is ready for mating. The male camel Urinates on its own tail and swishes it over its back so that the Urine contains female-attracting pheromones. It shows distinct violent behavior towards other male camels. The female camel undergoes an estrous cycle in the breeding season which lasts receptive for 3-4 days, and non-receptive following the other 10 days. In the receptive period, the camel sits down and exposes its genitalia for the male camel to copulate. The whole mating takes about 20 minutes and is accompanied by gurgling and frothing by the male and bleating by the females.

It should be noted that African elephants have longer gestation periods like Asian elephants whereas no other animal has a longer gestation period than an elephant or a shorter gestation period than mice.

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The Grand Canyon began its formation about 5 my ago by the erosive action of the Colorado River. Its sedimentary layer composition reflects its history, keeping fossilized living forms that used to inhabit the area.

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The Grand Canyon formation began approximately 5 million years ago, thanks to the erosive action of the Colorado River.

The strength of the colorado river caudal, together with deglaciation and humidity factors, began to cause an uncontrollable erosion process in these lands that were previously part of the sea bottom.

Originally many strata and sediments accumulated at the bottom of the ocean. With time these extensive areas were exposed when the Rocoses Mountains got formed by the end of the cretaceous (70 million years ago).

Now, by looking at the composing layers, it is possible to understand its formation.

The Grand Canyon is almost entirely composed of sedimentary rock.

It was formed while sediments of sand and mud got deposited in thick layers at the bottom of the ocean and got compacted through the pass of time until becoming a rock.  

Sedimentary rocks have been chronologically accumulating for years, reflecting the geological formation known as superposition.  

According to this sedimentary deposition, we can distinguish the older rocks located in the deepest areas from the younger rocks in more superficial layers.

Each layer keeps fossilized organisms that used to inhabit this area in the past.

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An exothermic change, Because it has heat.

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer: True, all chemicals should be treated as if you don’t know what they are.

Explanation:

All chemicals should be treated as if you do not know what they are. In this way you can protect yourself and others from potential hazards, as chemicals can be mixed up or confused.

The statement "All chemicals in the lab (including foodstuffs and store-bought chemicals) should be treated as if they could be hazardous" is definitely true.

Chemicals may be characterized as any sort of basic substance that is significantly utilized in or manufactured during a reaction that involves remarkable alterations to atoms or molecules.

The methodology of treating chemicals demonstrates their physical as well as chemical properties, appearances, and reactiveness. In this way, one must become much more confidential with all the basic characteristics, potential hazards, and efficiency of any chemical.

This procedure also delivers proficiency to you in the future with respect to chemicals or their efficiency. It also decreases your potential fear of chemicals.  

Therefore, the statement "All chemicals in the lab (including foodstuffs and store-bought chemicals) should be treated as if they could be hazardous" is definitely true.

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