State the atomic number and mass number of the element.

In an ecosystem, a porcupine having sharp gills is  an adaptation that helps protect the animal.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

The answer in this question is show you made Sodium Hydroxide and Hydrogen Gas.In order to do the products of the reaction relate to the phenol red test and the splint test you need to show that you made Sodium Hydroxide and Hydrogen Gas. Show that you made Sodium Hydroxide and Hydrogen Gas so that the products of the reaction relate to the phenol red test and the splint test.

Answer:

Magnesium oxide

Explanation:

When magnesium reacts with oxygen, the magnesium atoms donate electrons to O2 molecules and thereby reduce the oxygen. Magnesium therefore acts as a reducing agent in this reaction. The O2 molecules, on the other hand, gain electrons from magnesium atoms and thereby oxidize the magnesium.

Answer: all of the above

Explanation:

Plants and animals must be able to adapt to their surroundings, because otherwise they could be in danger because of a simple change weather patterns or different predators roaming around. They will also have possible competition.

Answer:

Using the graph, we can see that after 4.5 minutes, the bus traveled 4500 meters. Find 4.5 on the x axis, and then see what y value it corresponds to.

Let me know if this helps!

Answer:

By using the data given in the Graph the bus covered 4500meters in 4.5 minutes

Explanation:

Answer:

600 mAh·g−1

Explanation:

i hope this is good let me know if its wrong

I think  depends.......

Answer:

It depends on what medication/drug it is. Pharmaceutical drugs would be a lot before you could "od", some such as "xanax" take a short amount of time.

hope this helps!

Answer:

Please explain the question nicely first

Answer:

It's B

Explanation: When the slope of something is greater, it falls faster!

Explanation:

sorry I really need points so I can ask a question

Explanation:

on a table then all will put them in a box and try every one or yoy could put ir out side and try it on the table

Lower explosive elements should be placed on the left side and high explosive elements on the right side of the periodic table.

If we wanted to predict which elements are explosive we will organize the periodic table starting from least explosive to high explosive just like the arrangement is done in the modern periodic table in which elements having lower atomic number are present at the left side of periodic table.

Whereas the elements having higher atomic number are placed on the right side of the periodic table so we can conclude that we have to place less explosive elements on the left and more explosive elements on the right side of the periodic table.

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Answer:

Because looking at the reactivity series of both elements Calcium is more reactive than hydrogen.

answer:

Cl = 7 valence electrons

Mg = 2 valence electrons

explanation:

Answer:

Elements:lead

Explanation:

Lead is a metal element. because it is made of only metal atoms,it does not dissolve in water,but it does conduct electricity.

I hope it's helpful!

Ok buddy- so if you grab your periodic table there should be numbers on the side... (REFER TOO IMAGE ONE) So then we find them on the periodic table... (REFER TO IMAGE TWO) and if we look at the number the higher it gets the more radioactive it gets, and thats why it stops because the atomic gets so high that the level can't even be able to be mad because it will just explode and when it does that its dangerous because of how radioactive it is... so if we look the more "gas" concentrated elements are seen at the top (i.e. the helium) So the order would be He, C, O, Ne, Ca, I

Then just do that for the rest of them and the numbers on the side are the positive (+) or negative (-) amount of atoms that the atom is missing or ha to be stabilized or over stabilized, but you will learn that later on when you go into periodic equations.

Hopefully this helped, have a wonderful day! :)

Answer:

To find the ionic charge of an element you'll need to consult your Periodic Table. On the Periodic Table metals (found on the left of the table) will be positive. Non-metals (found on the right) will be negative.

Explanation:

Answer:

The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3.

Explanation:

Answer:

Photosynthesis is the process in which plants harness energy from the sun to make their own nutrition. The process converts light energy into chemical energy through cellular respiration.

Explanation:

Just to start you off. I hope it helps! (❛ ᴗ ❛)

Answer:

Photosynthesis is the process which a plant makes it's own food. The plant get energy from the sun and water from the soil. The plant lets the suns energy flow though so it touches all the parts that need it. When it get the water from the soil it goes into the stem and to the leaves. Photosynthesis is important because it benefits the air and us too. We can also help by put carbon dioxide. Photosynthesis is part the life cycle of a plant.

Explanation:

Answer:

AlN

Explanation:

have a great day

Answer:

Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect, or by exhibiting a new phenomenon that is in need of explanation.

Explanation:

Answer:

Explanation:

One of its important roles is to test theories and to provide the basis for scientific knowledge that we need to know. How are we supposed to know the answer to our question if we don't perform the experiment to test our question.

Answer:

Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

It would be a bad idea to make coins made of sodium metal, beacause of their reactive nature.

Those species which are not stable in nature and always ready to show reaction with another species, is known as reactive species.

Sodium metal is highly reactive in nature, means it easly reacts with the atmospheric oxygen and shows oxidation or with the moisture content of atmosphere as a result of which vigorously catches fire. That's why we don't use sodium to make coin.

Hence, beacause of reactive nature sodium is not used.

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Answer:

Genotypes are the genetic composition of an organism. Phenotype is the physical composition of an organism.

Explanation:

Answer:

The genotype is the genetic characteristics of an organism

the phenotype is the physical characteristics of an organism

Answer:

a is C2H2

and c6h6

Explanation:

Explanation:

Gas is a state of matter that has no fixed shape and no fixed volume.

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

Answer:

gravitational potential energy doesnt change srry the other one as in explaining it

Answer:

i do not know

Explanation:

Answer:

This is a physical change.

Explanation:

As long as the identity of the substance has not changed, and the element is present before and after, it is a physical change! (Ex: ice melting)