How many electrons does helium have on the periodic table?

Answers

Answer 1

Answer:

Two Electrons.

Explanation:

Helium is the second element of the periodic table and thus is an atom with two protons in the nucleus. Most Helium atoms have two neutrons in addition to the protons. In its neutral state, Helium has two electrons in orbit about the nucleus. Model of a helium atom's nucleus with two protons and two neutrons.

Hope This Helps!

Answer 2

Answer:

The answer to your question is two electrons.

Explanation:

In its neutral state, Helium has two electrons in orbit about the nucleus.


Related Questions

calculate the number of moles of Cu in 2.4x10^21 atoms of Cu

Answers

Answer:

0.004 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{2.4 \times {10}^{21} }{6.02 \times {10}^{23} } \\ = 0.003986[/tex]

We have the final answer as

0.004 moles

Hope this helps you

Write an isotope notation for the
most common isotope of nitrogen
and two other isotopes of nitrogen.

Answers

Answer:

Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15.

1) According to the table, what was the temperature change from start to finish of each material? Styrofoam- metal- paper- plastic-

Answers

styrofoam: 14 degrees

metal: 55 degrees

paper: 25 degrees

plastic: 28 degrees

if they are asking for temperature change, just subtract the last number from the first number to get the difference :)

Answer:

styrofoam would be 14°

metal would be 55°

paper would be 25°

plastic would be 28°

Explanation:

im pretty sure you just take the biggest number and subtract the smallest number. to get how much it has changed.

How many moles of HCl can be produced from 0.207 g of SOC12 SOC12(1) + H2O(1) = SO2(g)+ 2HCl(g) ​

Answers

Answer:

.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂

Explanation:

The balanced reaction is:

SOCl₂ + H₂O ----> SO₂ + 2 HCl

By stoichiometry of the reaction they react and produce:

SOCl₂: 1 mole

H₂O: 1 mole

SO₂: 1 mole

HCl: 2 mole

Being:

S: 32 g/mole

O: 16 g/mole

Cl: 35.45 g/mole

H: 1 g/mole

the molar mass of the compounds participating in the reaction is:

SOCl₂: 32 g/mole + 16 g/mole + 2*35.45 g/mole= 118.9 g/mole

H₂O: 2*1 g/mole + 16 g/mole= 18 g/mole

SO₂: 32 g/mole + 2*16 g/mole= 64 g/mole

HCl: 1 g/mole + 35.45 g/mole= 36.45 g/mole

Then, by stoichiometry of the reaction, the following amounts of mass react and are produced:

SOCl₂: 1 mole* 118.9 g/mole= 118.9 g

H₂O: 1 mole* 18 g/mole= 18 g

SO₂: 1 mole* 64 g/mole= 64 g

HCl: 2 mole* 36.45 g/mole= 72.9 g

Then the following rule of three can be applied: if by stoichiometry of the reaction 118.9 grams of SOCl₂ produce 2 moles of HCl, 0.226 grams of SOCl₂ how many moles of HCl do they produce?

moles of HCl= 3.80*10⁻³

3.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂

Plz help Explain how the fire spreading from tree to tree provides a model for
conduction
B 1
x
X Ω
IC
The Great Fire of 1910 burned through parts of North Idaho,
western Montana, eastern Washington, and southeastern
British Columbia. Many small fires and several large fires that
were started by an electric storm coalesced into one "Big
Blowup" of unprecedented size that lasted two days.
Hurricane-force winds spread the firestorm; trees became
blowtorches, sucking fire from the ground and hurling it in
several directions, spreading the fire on contact. Witnesses
described fireballs being flung like cannons. Trees exploded
like fireworks. The fire killed 87 people, destroyed several
towns in its path, and burned more than three million acres of
forest
f
D

Answers

The  Great Fire of 1910 that burned through parts of North Idaho, western Montana, eastern Washington, and southeastern British Columbia serves as a model of conduction as the fire spread from tree to tree without actual movement of the trees away from their position but as a result of contact between the burning flames in the trees.

What are the processes of heat transfer?

Heat transfer processes refers to the process by which heat energy is transferred from one point to another within a medium of between two points.

There are three processes of heat transfer, namely:

ConductionConvection, and Radiation

Conduction is a process of heat transfer in which is transferred from one point to another in a medium without the actual movement of the particles of that medium.

During conduction, the particles of the medium vibrate about a mean position as they acquire heat. This heat energy is then transferred from that particle to the neighboring particle as they particles are in close contact. Hence the heat is transferred from one particle to the next.

Learn more about conduction at: https://brainly.com/question/893656

#SPJ1

For a substance to change from a gas to a liquid the particles must _____

Answers

Answer:

The gas particles must touch a cold surface to start to slow down and get closer to form a liquid.

science need ko po ng help di mo ako kase matalino salamat po

Answers

Answer:

1.An initial observation is the measurement that you take before you start any process that might cause a change. When you compare your subsequent observations with the initial one, you will see whether any change has taken place, and you will be able to measure the change.

Explanation:

D ko po alam yung iba

Why do you sound weird when you hold your your nose and talk?

Answers

Answer:

People with a nasal voice can sound as though they're speaking through a clogged-up or runny nose, which are both possible causes. Your speaking voice is created when air leaves your lungs and flows upward through your vocal cords and throat into your mouth. The resulting sound quality is called resonance. (i hope i helped ya )

Explanation:

If there are more shells does the nuclear charge decrease

Answers

Answer: Yes, if there are more shells the nuclear charge decreases.

( BRAINLIEST)
Which Salt is formed when Ammonia reacts with Nitric acid ?

Answers

Answer:

When nitric acid reacts with ammonia, ammonium nitrate is formed.

Determine the element, given the number of protons in an atom

Answers

You can determine an element based on its protons due to the atomic number.
Atomic number is the number of protons in an atom and you can locate it on your periodic table as the number above the letter. Each element has a different number of protons and because of that you can find the element on the periodic table based on its atomic number.

What is caused by the suns and mom gravitational pull on the earth

Answers

Answer:

earth quakes, tornados, hurricans

One day, Snoopy bought gas at $2.02 per gallon. How many minutes could Snoopy travel at 55.1 mi/hr if he bought $22.50 of gas and his fuel economy is 22.1 mi/gal?

Answers

Answer:

34

Explanation:


A 50g block of aluminum at -100°C is submerged in 30g of water at 20°C.
Cwater = 4.184 J/gºC
AH tus water = 334 J/g
Cu = 0.89 J/gºC
What is the final temperature of both substances?

Answers

Umm Cwater cuz it is

How many years are in 500 days?
Round answer to the hundreths place.

Answers

Answer:

1 year

Explanation:

There are 356 days in a year, round to nearest 100 would equal 400.

It's really 1yr and about 4.5 months

5. How do ocean currents impact land temperatures? 1.Winds from the land help drive ocean currents. 2.Winds from the ocean bring temperatures related to the ocean currents. 3.Ocean currents do not impact land temperatures. 4.Ocean currents bring temperatures away from the nearby land.​

Answers

Answer:

the answer is the option 4

Explanation:

i believe its number 4 because when you live near a beach the temperature is cooler

xác định nội năng chuẩn ΔU của phản ứng tổng hợp amoniac
ở 400 0 C, biết :

N 2(k) + 3H 2(k) = 2NH 3(k) ΔH 0 T = - 109,0 kJ

Answers

Explanation:

xác định nội năng chuẩn ΔU của phản ứng tổng hợp amoniac

ở 400 0 C, biết :

N 2(k) + 3H 2(k) = 2NH 3(k) ΔH 0 T = - 109,0 kJ

how long do you leave hydrogen peroxide in your ear

Answers

Answer:

2 mins

Explanation:

because it will let it soak into your ear and get everything out

Carbonated beverages contain dissolved carbon dioxide gas. Which temperatures are best for the liquid while it is being produced in the factory?

A. High temperatures are best to minimize the solubility.
B. High temperatures are best to maximize the solubility.
C. Low temperatures are best to minimize the solubility.
D. Low temperatures are best to maximize the solubility.

Please answer and thankyou!

Answers

Carbonated beverages contain dissolved carbon dioxide gas. Low temperatures are best to minimize the solubility. option C is correct.

Drinks that have carbon dioxide dissolved in the water are referred as carbonated beverages. The presence of this gas causes the liquid to froth.

Carbonation takes place by applying pressure. Spring water, beer and soda, and pop are a few examples of carbonated beverages. When carbon dioxide  is absorbed in a liquid, for example spring water, it absorbs Carbon dioxide from the subsurface. It can also happen naturally. Beer is  example of a naturally carbonated beverage as the brewing process produces carbon dioxide soda .

Thus option C is correct.

To know more about carbonated beverages here

brainly.com/question/2029096

#SPJ3

Aristonun teorisini çürüten bilim adamı

Answers

Can you please translate to English?

What system was put into place in 1965 to help people be prepared for future tornados? WILL GIVE BRAINLIEST AND THANKS


Question 2 options:


NOAA



SKYWARN



SKYWATCH

Answers

Answer:

Eas and NOAA is that system

The following is an example of a renewable source of energy:
coal
pretroleum
nuclear energy
hydroelectric

Answers

Answer:

hydroelectric

Explanation:

covalent compounds are generally made up of elements found in which part of the periodic table?

Answers

Answer:

elements from group four to eight

What might the student have done that caused this
error? List all possible causes.

Answers

Answer:

They need to put a question that has an error in it

Answer:

The capillary tube was too close to the bottom of the beaker.

The ruler may have moved.

Water got into the capillary tube.

The temperature was not allowed to equilibrate in the 2-4 minutes

Which state of matter has a definite volume but can change its shape?
A.) Solid
B.)gas
C.)liquid

Answers

Answer:

solid

Explanation:

because solid has a definite shape and volume

Answer:

Liquid

Explanation:

This is because the intermolecular forces of attraction are strong enough to hold the molecules together but not so strong as to fix them into definite positions (as in solids). Instead, they possess fluidity and hence no definite shape.

A sample of Element X is found to contain 82.15% of isotope type 1 (84.9118 amu)
and 17.85% of isotope type 2 (86.9092 amu). Calculate the average atomic
mass.

Answers

Answer:

Have you gotten your answer yet?

The average atomic mass of element X is 85.26 amu.

To calculate the average atomic mass of Element X, we need to take into account the abundance of each isotope and its respective atomic mass.

First, let's assign variables to the abundance and atomic mass of each isotope:

- Isotope 1: abundance = 82.15%, atomic mass = 84.9118 amu

- Isotope 2: abundance = 17.85%, atomic mass = 86.9092 amu

To calculate the average atomic mass, we can use the following formula:

average atomic mass = (abundance₁ ×atomic mass₁) + (abundance₂ ×atomic mass₂)

Substituting the values:

average atomic mass =

[tex]\dfrac{82.15\times84.9118}{100}+\dfrac{17.85\times86.9092}{100}\\=85.26 \ \rm{amu}[/tex]

Thus, average atomic mass of element X is 85.26 amu.

Learn more about average atomic mass,here:

https://brainly.com/question/13753702

#SPJ3

The gas release during a chemical reaction which causes fizzing known as?

Answers

Answer:

Hey mate...

Explanation:

This is ur answer....

Effervescence

Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from that release.

Hope it helps!

Brainliest pls!

Follow me! ♧

Explanation:

Your answer is effervensecence

What is the unit of measure for the volume of an irregular solid?

Answers

The volume of these objects can be found by water displacement. A volume of water sufficient to cover the object is placed in a graduated cylinder and the volume read. The object is added to the cylinder and the volume read again.

Answer:

Displacement is a method used for measuring the volume of an irregular solid and it is in cubic units.

The accuracy of a measurement
??

Answers

Answer:

-indicates that the measurement is also precise.

Explanation:

Pretty sure it's option 2.

How many moles are in 13.5g of calcium?

Answers

Answer: 0.337 mol Ca

Explanation: 13.5 g Ca ÷ (40.1 g/mol Ca) =

Answer:

13.5/40+0.3375

Explanation:

Other Questions
synchondroses and symphyses are examples of ________ joints. What are the gifts of the holy ghost in order ?Explain each one of themCorrect answer Brainliest, wrong reporting A physical region so a geographic area in which people have certain in common true or false A Northwest Coast Indian could become a tribal chief by PLS HELP!!! Which of the following function graphs have a range of (-, )? Grass can grow up to six inches in 7 days depending on the temperature, humidity, and time of year. At this rate, how tall will the grass grow in 28 days? Que significa la frase La lnea que separa los verbos transitivos de los intransitivos no es segura ni fija When an artist receives royalty, it isA.a fee for the use of the artB. the right to create your own artC. permission to use someone else's artD. the cost associated with making a product Evaluate the expression when a = 2 and b = 5.(4ab)^2+3aa.12b.15c.24d.80 Which choice is equivalent to the product below?Square root 2 square root 3 square root 8 (7 x 10^5) divided by (2 x 10^2) in standard form What happened to the nasal cavity of the whale over millions of years of evolution? I need the right answer ASAP NO LINKS!!! Explain why:0.8333... is equivalent to (5/6). PLEASE HELP!!! IM GETTING RAPED BY A CLOWN!!A. a language in which peoples hands touch before the next speaker can talk.B. a language that mixes different elements from two communication systems.C. the language spoken at the border of two nations.D. the language used by Deaf people to communicate with their infants. Which of the following occurred under the leadership of the royal governors?A. Georgia gave minorities more rights. IN. Georgia adapted to American Indian traditions. Georgia re-established the mission system, and converted thousands of natives.D. Georgia established a system of self-representation with a general assembly Pls help me with this question and explain pls!!! Solve the following equation -6p+7=3(2p-3)-4(-10+4p)a.p=6b.p=5c.p=7d.p=12If possible plz show your work so I can understand i think the answer is 6 but plz help explain The authority granted to an agent through the agents contact is referred to as 5. Geometry A rectangular vegetable garden has a length of 8 ft and a width of 5 ft. The width is increased by 2 ft. By how many square feet does the area increase?