How many individual atoms are represented in the reactants of the equation shown below?

Answer:

Protons: 23

Neutrons: 28

Electrons: 23

I THINK

Explanation:

Answer: well I don’t have either picture but here goes anyway. It could be that the suns rotation matched up with the moon being 400 miles away from it and 400 times bigger it could be in image 1 the sun is only at a partial eclipse. With no images kinda had to wing it but I hope it helps :D

A lunar eclipse is an event that occurs when the sun, moon, and earth are aligned. It is happening in image 2 as Earth is obstructing the sun’s light.

In lunar eclipse Earth completely covers the surface of the moon which makes the surface look red and dark. It happens only when the Moon is opposite the sun in the sky.

It is not seen in the first image as the earth is incapable of totally blocking the sunlight and hence does not result in a lunar eclipse. In the second image, the Earth has covered the whole surface of the moon and hence is blocking the sunlight.

Therefore, a lunar eclipse is seen only in image 2.

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Answer:

OK

Explanation:

OK

Answer:

Bases

Explanation:

According to a Swedish scientist called Svante Arrhenius, a base is a substance that dissociates into hydroxide ions (OH-) when in an aqueous solution i.e. when dissolved in water.

For example, sodium hydroxide (NaOH) will dissolve in water and dissociate into the following;

NaOH (aq) → Na+ (aq) + OH- (aq).

Hence, according to this question, the reaction with water to produce OH- ions is only applicable to BASES in accordance to Arrhenius definition.

Answer:

cal is an abb

Explanation:

meaning calories

Answer:

Explanation:

When two plates are moving away from each other, they are called a divergent plate boundary.Along these boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere.

Helped by none other than the #Queen herself!

Answer:

Option A. KCl (aq)

Option D. Mg(OH)₂(s

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

MgCl₂(aq) + KOH(aq) —>

In solution, MgCl₂(aq) and KOH(aq) will dissociate as follow:

MgCl₂(aq) —> Mg²⁺(aq) + 2Cl¯(aq)

KOH(aq) —> K⁺(aq) + OH¯(aq)

MgCl₂(aq) + KOH(aq) —>

Mg²⁺(aq) + 2Cl¯(aq) + 2K⁺(aq) + OH¯(aq) —> 2K⁺(aq) + 2Cl¯(aq) + Mg(OH)₂ (s)

MgCl₂(aq) + KOH(aq) —> 2KCl (aq) + Mg(OH)₂(s)

Thus, the products of the above reaction are: KCl(aq) and Mg(OH)₂(s)

Thus, option A and D gives the correct answer to the question.

Answer:

ty

Explanation:

Answer:

HAT IS THE QUESTIN? hehehe

Explanation:

lol

Answer:

Answer

Explanation:

All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.

Answer: Atm

I took a test and got it right.

Answer:

Explanation: he axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. ... The binding allows the nerve impulse to travel through the receiving neuron

Answer:

The Answers are B, C, and E.

Explanation:

Fossils of nearly identical species are found on both South America and African continents. Marsupials existed on both North American and Australian continents when these land masses were connected. Areas of subduction often have high seismic activity as one plate moves under another plate. Since the continents were once joined, there is the likelihood that species originated in one location and then spread to other areas as the continents moved is likely. This explains the similarity of fossils or species in very geographically remote areas. The high activity of seismic movement also is best explained by plate movement.

The  statements that supports the theory of plate tectonics are:

According to the question, we are asked to prove the evidence of the plate tectonic theory based on the movement of continental plates across the Earth's surface.

Plate tectonic theory states that there is a detachment of the outer crust of the Earth and they join when the upper part meets the continental plates and diverges across the planet.

Therefore, the statements that support this theory are the facts that:

Therefore, the correct answers are options B, C and E

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Captionless Image

sepal

pollen tube

filament

Stigma

Renewable energy resources are?

A resource that cannot be readily replaced by natural means on a level equal to its use.

Invisible resources

Renewable resources that can be naturally restored.

All the above

To produce perfumes for Man

This is energy that is stored for later use.

kinetic energy

potential energy

mechanical energy

electromagnetic energy.

When fertilization has occurred the fertilized ovule changes and so does the ovary. What do they turn into?

The fertilized ovule turns into the fruit and the ovary turns into the seed.

The ovule grows bigger and the ovary withers.

The fertilized ovule turns into a seed and the ovary turns into the fruit or pod.

The fertilized ovule turns into honey and the ovary turns into nectar.

What is energy?

1 point

moving energy

stored energy

renewable energy

The ability to do work.

Wind-pollinated flowers usually have ______ and ________ petals.

1 point

big ... bright

small .... bright

big ... dull

small ... dull

What is the function of nectar?

To provide food for the flower

To attract pollinators

To attract animals to disperse the fruits

Which of the following devices transforms electrical energy into mechanical energy?

1 point

An e-reader

a fan

a manual pencil sharpener

iPod

its one of these and chillll

Answer:

here you go

Explanation:

hydrogen-3

carbon-14

uranium-235

copernicium-277

fermium-252

Answer:

hydrogen-3

carbon-14

uranium-235

copernicium-277

fermium-252

:)

Explanation:

Answer:

they all form diatomic molecules.

for example: H2, F2, Cl2, Br2, I2, and At2) and they all form negatively charged ions H-, F-, Cl-, Br-, I-, and At- .

Answer:

b) velocity.

c) velocity, m/s²

d)change in velocity, change in direction, change in both velocity and direction.

e) increasing or decreasing

Answer:

Amplification

Explanation:

Explanation:

[tex]31.5 \: g \: aommnia \: \times \: \frac{1 \: mol \: ammonia}{8 \: g \: ammonia \: } \: \times \frac{3 \: mol \: hydrogen}{2 \: mol \: ammonia} \: \times \frac{1 \: g \: hydrogen}{1 \: mol \: hydrogen} = \: 5.90625 \: g \: hydrogen \: must \: react \: [/tex]

Answer:

THE MOLARITY IS 2.22 MOL/DM3

Explanation:

The solution formed was as a result of dissolving 37.5 g of Na2S in 217 g of water

Relative molecular mass of Na2S = ( 23* 2 + 32) = 78 g/mol

Molarity in g/dm3 is the amount of the substance dissolved in 1000 g or 1 L of the solvent. So we have;

37.5 g of Na2S = 217 g of water

( 37.5 * 1000 / 217 ) g = 1000 g of water

So, 172.81 g/dm3 of the solution

So therefore, molarity in mol/dm3 = mol in g/dm3 / molar mass

Molarity = 172.81 g/dm3 / 78 g/mol

Molarity = 2.22 mol/dm3

The molarity of the solution is 2.22 mol/dm3

Explanation:

Answer:

10

Explanation:

1 Fe atom+ 3 nitrogen atoms+ 6 oxygen atoms= 10 atoms

Answer:

D. Alkali metal ions will not have a negative  one charge; they will have a positive one  charge

Explanation:

Alkali metals are a found towards the left hand side of the periodic table. The comprise of Li, Na, K, Rb, Cs and Fr.

They form univalent positive ions such as Cs^+, Na^+ etc. They do not form negative ions but give out one electron to form the sort of ions stated above. Recall that metals are electropositive in nature (donate electrons).

The mistake made by Shanice is to say that group 1 elements have a negative one  charge.

Answer:

Solid- Definite shape

Solid and Liquid- Definite volume, Not easy to compress, if at all

Gas- No Definite Volume

Liquid and Gas- No Definite shape

The characteristics for each phase of matter in the table where it belongs are as follows:

The states of matter may be defined as the three distinct physical forms which matter can take in most environments. They are as follows:

Each of the states of matter significantly possesses specific chemical and physical properties. For example, solids generally have a definite volume, are relatively rigid, and atoms or molecules are attached to each other very compactly.

Liquids possess a definite volume and have the ability to alter their shape through flowing. The atoms are loosely bonded to one another.

Gas has no definite volume or shape. This state of matter is easily compressed as well.

Therefore, the characteristics for each phase of matter in the table where it belongs are well described.

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Answer:

2.3g

Explanation: my mom is a teacher

CH₄ + 2O₂ → CO₂ + 2H₂O For this reaction the mass of methane gas (CH4) is required in order to follow the Law of Conservation of Mass is 2.3 gram. Therefore, option D is correct.

The Law of Conservation of Mass states that the total mass of the reactant is exactly equal to the total mass of the product.

It is also state that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal gets carbon dioxide when it is burned.

This law is important in understanding and production of various chemical reactions. If researchers experience the identities alongside the quantities of the reactants for any particular reaction.

According to the Law of Conservation of Mass, In given combustion reaction to obey this law the mass of reactant is 2.3 grams.

Thus, option D is correct.

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Answer:

2.79 mol NH3 have 2.79 mol of N atoms. Answer is 1.68*10²⁴ N-atoms

Answer:

they reduce viral transmission

They prevent asymptomatic spread

You're protecting others from illness.

They're mandated by law in some states

They're good hygiene in general

Answer:

acid + hydrogen

Explanation:

gives a good combination