2. Write the charge of each sub-atomic particle in the helium atom above.

Answers

Answer 1

Explanation:

The charge of a helium atom is zero

It is neutral because

The number of unit negative charges = number of unit positive charges

One unit negative charge = -1.6 x 10^(-19) which is basically the charge of an electron

One unit positive charge = +1.6 x 10^(-19) which is basically the charge of a proton

A helium atom has 2 protons and 2 electrons, so it is neutral

NOTE: an alpha-particle (He2+) is a charged helium atom it has 2 protons and 0 electrons. Charge of an alpha particle = +3.2 x 10^(-19).


Related Questions

viết các PTHH sau CuO + h20

Answers

Answer:

An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species. In redox reaction the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.

In the reaction : CuO+H  

2

⟶Cu+H  2 O  

n the reaction H2

  is oxidized since it has lost electrons and Cu is reduced since it has gained electrons.

Explanation:

hope this helps

How many sub atomic particles are there in an atom?

Answers

Answer:

The are mainly three kinds of subatomic particles in an atom:

1) Electrons (negatively charged particles)

2) Protons (positively charged particles)

3) Neutrons (neutral particles)

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

Chlorine reacts in a similar way to bromine. Suggest a reason why.

Answers

Elements in the same group have similar properties because their electron configurations are similar. In particular they have the same number of valence electrons, which are the in the outermost (highest energy) s and p orbitals.

Chlorine reacts in a similar way to bromine as they belong to same group of periodic table.

What is chemical reactivity?

Reactivity in chemistry is indeed a measurement of how easily a material reacts chemically. The chemical may react alone or in conjunction with neighboring atoms as well as compounds, and in either case, energy will typically be released. The most reactive substances and elements have the potential to spontaneously or explosively ignite.

Since bromine and chlorine electron configurations are similar, elements of the same group exhibit comparable characteristics. The amount of valence electrons, that are located inside this outermost (highest energy) p and s orbitals is particularly similar.

Therefore, chlorine reacts in a similar way to bromine as they belong to same group of periodic table.

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Which of the following atoms will have the
most similar properties to the atom shown
below?

Answers

Answer:  Atom IV

Explanation:

Atoms that have the same number of valence electrons (belong to the same group of the periodic table) have similar properties. Hydrogen and Helium are exceptions.  The first shell is filled with 2 electrons which makes Helium a Noble Gas and Hydrogen is a gas thus not a Group 1 metal.

The given atom has 2 valence electrons (a group 2 element).

∴ the atoms with similar properties to that of the given atom would also have 2 valence electrons:

I - filled 1st shell thus noble gas ❌

II - 3 valence electrons ❌

III - 4 valence electrons ❌

IV - 2 valence electrons ✅

∴ atom IV has similar properties to the given atom.

Checking my answer:

If we check the periodic table, the atom given is Be (Alkali Earth Metal)

I is He  (Noble Gas)

II is Bo (Group 13)

III is C (Group 14)

IV is Magnesium (Alkali Earth Metal)

what is the amount of heat required to completely melt a 200?

Answers

The answer is 6680 J

What is a common disease caused by a fungus?
A.
common cold
B.
HIV/AIDs
C.
athlete's foot
D.
pneumonia

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct choice is : C

Athlete's foot is one of the common disease caused by a fungus !

18.What are the similarities between a mixture and a solution?

Answers

To put it in simple terms, we can say that a mixture is a substance composed of other substances mixed together but not joined together, while in a solution has more

Answer:Mixture comprises two or three compounds that aren't fused chemically. They have no physical interactions

and A solution contains two substances that are chemically mixed to form a new compound.

#1. Boyle's Law. A gas with a volume of 4.0 L at a pressure of 205 kPa is allowed to expand to a volume of 12.0 L.
What is the pressure in the container if the temperature remains constant? (Answer is 68.3 kPa).

Answers

Explanation:

According to Boyles law

[tex]pressure \: \alpha \frac{1}{volume} [/tex]

P1V1 = P2V2

205 (4) = P2 (12)

[tex]P2 = \frac{205 \times 4}{12} [/tex]

P2= 820/12

P2= 68.3 KPa

The pressure in the container after the expanssion of gas, if the temperature remains constant is 68.3 kPa.

What is Boyle's Law?

According to the Boyle's Law, at constant temperature pressure of any gas is inversely proportional to the volume of the gas, i.e.

P ∝ 1/V

Required equation for the calculation of the pressure is:

P₁V₁ = P₂V₂, where

P₁ = initial pressure = 205 kPa

V₁ = initial volume = 4 L

P₂ = final pressure = ?

V₂ = final volume = 12 L

On putting all these values on the above equation, we get

P₂ = (205)(4) / (12) = 68.3 kPa

Hence resultant pressure is 68.3 kPa.

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______ is the chemical reaction between oxygen and energy storage molecules, such as glucose, that releases energy into cells.

Answers

Answer:

cellular respiration

Explanation:

Summary. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP

Some solids such as glass can be heated and cooled in order to shape them. These are?
A.) Crystalline
B.)Amorphous

Answers

Answer:

Amorphous

Explanation:

Some solids such as glass can be heated and cooled in order to shape them.

These are Amorphous.

Glass is amorphous solid (or psuedo solid or super cooled liquid)

Why does silicone dioxide have a higher melting point than sodium chloride?

Answers

[tex]\color{Black}\huge{Answer} [/tex]

It has a very high melting point as the ionic bond is very strong between them. More force is required to break down. Silicon dioxide is a giant covalent structure. It also has the highest melting point because the covalent bonds between them is the strongest.

True or false: Atoms are mostly space. *

Answers

Answer:

false

Explanation:

Atoms make up everything and are made up of protons, neutrons, and electrons.

Hoped this helped!

Someone pls help me With this I will make you as brain

Answers

Answer: k = 5

Explanation:

k = the number of units that f(x) was moved up to get g(x).

We can see from the graph that f(x) was moved five units up.

So k = 5.

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I provide detailed explanations for math questions for as little as $1!

Why does a warm front usually bring a light and steady rain?

Answers

Warm front Forms when a moist, warm airmass slides up and over a cold air mass. As the warm airmass rises, it condenses into a broad area of clouds. A warmfront brings gentle rain or light snow, followedby warmer, milder weather.

Mark as brainlist please

Clouds are named for 3 different attributes including shape, _____________ & precipitation. *

A. size
B. color
C. elevation
D. smell

Answers

Answer:

color is there right answer for this question please make me a brainliest and follow me please please please please

Shape, COLOR, precipitation

What kind of reaction is NaHCO3 = Na2O + H2O + CO2

Answers

Answer:

NaHCO3 = Na2O + H2O + CO2 is a decomposition reaction.

Balanced Equation : 2NaHCO3 → Na2O + H2O + 2CO2

Burning fossil fuels adds more oxygen to Earth’s atmosphere, increasing carbon in abiotic matter and decreasing carbon in biotic matter. True or False (GIVING BRAINIEST)

Answers

Answer:

False

Fossil fuels add carbon dioxide to the atmosphere not oxygen

Knowing how electrons behave in metallic materials, describe why metals make great conductors of electricity

Answers

Answer:

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

Explanation:

which kind of change alters the shape of an object without changing what type of matter it isITS RIELLY SCIENCE

Answers

Answer:

Ice carving. It's still ice, it's not water, and it changes shape while not changing it's matter

Explanation:


How
does learning about organs help us understand
how organ systems work?

Answers

Answer: Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.

Explanation:

Please help
What rock layer marks the end of the dinosaurs?

Question 1 options:

Burgess Shale layer


Mesozoic Layer


KT Boundary layer

Answers

Could be the last one
Sorry if I’m wrong !

The rock layer which marks the end of the dinosaurs is: C. KT Boundary layer.

A rock can be defined as a solid material containing minerals, which are naturally formed through the following processes:

Weathering. Plate tectonic activity. Erosion.

Basically, a rock comprises of various layers which marks the age of both living and nonliving organisms, these includes:

I. Burgess Shale layer.

II. Mesozoic Layer.

III. KT Boundary layer.

Dinosaurs refers to a taxa of carnivorous or herbivorous archosaurian reptiles that are often very large and belongs to the Mesozoic era.

Basically, the Mesozoic Layer is a rock layer which marks the period when dinosaurs were still roaming the earth some million years ago.

However, dinosaurs went into extinction at the KT Boundary layer and as such it is a rock layer which marks the end of the dinosaurs.

Read more: https://brainly.com/question/22432773

True or false: There is space between molecules in a mixture

Answers

There is always space between molecules to the answer is True.

The statement "There is space between molecules in a mixture" is true.

What is a mixture?

A mixture is made up of mixing two or more substances. These mixtures are not mixed chemically, but physically. Both homogeneous and heterogeneous mixtures are possible.

A combination of two or more unrelated substances that is not the result of the chemical fusion is referred to as a mixture. They could be gases, liquids, or solids. The component of a mixture can be easily separated.

A mixture might consist of ingredients in the same phase as one another or in distinct phases. A mixture is homogeneous if the constituent parts are mixed at the same period. A mixture is heterogeneous if it is made up of components that are in different phases.

Thus, the statement is true.

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What is the volume of the water?
0 points
Captionless Image

Answers

Answer:

the value of water is

6000

Answer:

600 or 6000 I'm not sure

Tina says, “A solution can have only two different kinds of particles.” Deepa says, “A solution can have many different kinds of particles.” Whom do you agree with? Explain why.

Answers

Answer:

Explanation:

Pick up a soft drink. The CocaCola I have has 8 ingredients and is a mixture. Mind you, it is hard to tell what kind of sugar is present because three are listed.

It certainly has more than 2 ingredients.

i agree with Deepa because in the coca cola example there were more than 2

helpppppppppppppppppp​

Answers

Answer:

whyyyy?what happened hmmmm hahahahahhajajaha

convert 2 butanol to 2 nitrobutane​

Answers

The conversion of 2 - butanol to 2 - nitrobutane​ involves conversion of  2 butanol to 2 - bromobutane and subsequently to 2 - nitrobutane.

In order to convert 2 - butanol to 2 - nitrobutane​, an SN2 reaction is first carried out in which 2 - butanol  is converted to 2 - bromobutane. This reaction proceeds with inversion of configuration at the chiral carbon as expected.

This product is subsequently reacted with silver nitrite in ethanol to yield  2 - nitrobutane​ along side silver bromide. Some alkyl nitrite is also produced as a by product. The components of the mixture are separated by fractional distillation. The scheme of the reaction is shown in the image attached to this answer. This reaction is only applied to primary and secondary alkyl halides.

Learn more: https://brainly.com/question/10079361

what are those tiny bumps on our tongue?​

Answers

Answer:

papillae

Explanation:

Answer:

parti Ng dila sguro! hecdsjsjves

How does Fluoroanimonic acid melt things?

Answers

Answer:s the temperature is increased, fluoroantimonic acid decomposes and generates hydrogen fluoride gas (hydrofluoric acid). ... 1  Fluoroantimonic acid has a H0 (Hammett acidity function) value of -31.3. Dissolves glass and many other materials and protonates nearly all organic compounds (such as everything in your body)

tall me is this what you looking for

pls answer thank you​

Answers

Answer:

6.5 – 8.5

Explanation:

cual es la longitud de una taza con aceite???? AYUDA ES URGENTE!!!

Answers

Answer:

1 taza = 250 ml eso creo

Explanation: Eso creo jejejejeje.

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