Determing Valence Electrons
Use your periodic table to determine the correct number of valence electrons for the elements below
Element
Group Number
Valence
Electrons
Period
Energy Levels
+
Cesium (Cs)
lodine 0
Arsenic (As)
Gallium (Ga)

Answers

Answer 1
Gallium ( Ga ) is the answer

Related Questions

what is the correct answer !

Answers

The answer for this question is A!

Answer:

Hi there, The correct answer is, OPT A

Explanation:

Please mark as the brainliest

Which of the following molecules is most likely an enzyme?
water
glucose
protease
monosaccharide

Answers

Answer:

protease is an enzyme

Explanation:

It hydrolyse peptide bonds of proteins and also called proteolytic enzymes.

protease! - it as an enzyme :)

Jana is modeling mutations using the word "FRIEND."
Which version of the word "FRIEND' models a deletion mutation?
A FRIENDS
B. DRIEND
C. FIEND
D. DNEIRF

Answers

Answer:

It is c I am doing the test I hope this helps ; )

Explanation:

Answer:

c

Explanation:

Which element is in the same period as Potassium (K) and in the same
group as Flourine (F)?
O A. Bromine (Br)
O B. Oxygen (O)
O C. Selenium (Se)
O D. Argon (Ar)

Answers

Answer:

A. Bromine (Br)

Explanation:

Correct answer is A. Bromine (Br)

The ability to pound metal into a flat sheet without breaking it is:

A. Luster
B. Malleability
C. Ductile

Answers

Answer: B

Explanation: Cuz .

Answer: The answer to your question is A

Explanation: Hey I miss you

Explain how natural resources are identified and why natural recourses are in evenly distributed.

Answers

Answer:

Natural resources are not evenly distributed all over the world. Some places are more endowed that others — for instance, some regions have lots of water (and access to ocean and seas). Others have lots of minerals and forestlands. Others have metallic rocks, wildlife, fossil fuels and so on.

Explanation:

What does microbiome do to your cells?

Answers

Here’s what I found Hope I helped ;)

How many molecules of carbon dioxide are in 12.2 L of the gas at STP?

Answers

Answer:

Converting Between Moles and Liters of a Gas at STP. To convert between moles and the volume of a gas at STP, we will use the factor label method discussed in the first unit. This conversions relies on the fact that a mole of gas at STP has a volume of 22.4 L.

Explanation:

One molecule of carbon dioxide at STP has a volume of 22.4 liters . Thus number of molecules of carbon dioxide in 12.2 L is 3.27 × 10²³ molecules.

What is one molecule?

A molecule is formed by the combination of same or different kinds of atoms. A number molecules together form a compound. Water, carbon dioxide etc. are compounds.

One mole of a molecule contains 6.022 × 10²³ number of atoms. Similarly, one mole of a compound contains, 6.022 × 10²³ number of molecules.This number is called Avogadro number.

At standard temperature and pressure (STP) that is at 298 K and 1 atm pressure, one mole of any substance carry 22.4 L. Thus number moles of 12.2 L of carbon dioxide is 12.2 / 22.4 = 0.54 moles.

Number of molecules = 0.54 moles × 6.022 × 10²³

                                     =  3.27 × 10²³

Hence, number of molecules of carbon dioxide in 12.2 L is 3.27 × 10²³ molecules.

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If you have 2 moles of sugar molecules,
you will have how many sugar molecules?

Answers

Answer- im pretty sure it's 2

PLZZZ HELP I NEED ANSWER ASAP THE FIRST ANSWER GETS BRAINLIEST

How is thermal energy transferred from Earth's core?

Through the absorption of water heated by the sun
Through convection that takes place in the atmosphere
Through conduction from magma to water and rocks
Through the sun's radiation that heats the ground

Answers

Answer:through the conduction from magma to water and rocks

Explanation:

why does condensation not occur on the outside of a warm glass of water?

Answers

Answer:

its called vapor. It can hold so much than colder eater based on the weather. For example if its cold it can heat up faster but if its hot it will maybe stay the same

Write the balanced chemical equations for the following double-replacement reactions.
(Steps: skeleton equation/count number of atoms in reactants and products/balance both sides)
Q24. Aqueous lithium iodide and aqueous silver nitrate react to produce solid sikrer iodide and
1 aqueous lithium nitrate.
A24.
I need the balanced chemical equation for this question

Answers

The balanced equation :

LiI(aq) + AgNO₃(aq) --> AgI(s) + LiNO₃(aq)

Further explanation

Given

Word equation

Required

Balanced equation

Solution

There are 3 ways to express a chemical equation:

word equation skeleton equation balanced equation

Skeleton equation for reaction above :

LiI(aq) + AgNO₃(aq) ⇒ AgI(s) + LiNO₃(aq)

If we look at this reaction, all the cations and anions have a charge of 1 (+1 or -1) so the balanced reaction between the skeleton equation and the balanced equation is the same

6.900x10^10 ÷ 4.000x10^8

Answers

Answer:

1.725e+18

Explanation:

A car covers a distance of 22.75 km in 17.04 minutes. Use dimensional analysis to calculate its speed in meters/second. Do not enter units in your answer.
Round to the tenths place or further.

Answers

The speed of the car = 22.25 m/s

Further explanation

Given

A distance of 22.75 km

Time = 17.04 minutes

Required

The speed (in m/s)

Solution

Speed is the ratio of distance per time

Can be formulated :

v = d/t  

v= speed, m/s

d=distance=m

t=time,s

Input the value :

[tex]\tt v=\dfrac{22.75~km}{17.04~minutes}\times \dfrac{1000~m}{1~km}\times \dfrac{1~minute}{60~second}\\\\v=\boxed{\bold{22.25~m/s}}[/tex]

I KNOW THE ANS JUST NEED AN EXPLANATION...PLEASE I WILL Mark you the brainiest

Answers

I’m pretty sure it would be D.

what is rusting of iron?​

Answers

Answer:

Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.

Explanation:

Rusting = oxidation reaction
Iron = reacts with oxygen and water to form hydrated iron oxide, we then start to see rust.
This prevents the metal from coming in any contact with air. Hope this helps :)

What ideas do you have about how two places
could have the same amount of sunlight but
different skin cancer rates?

Answers

Answer:

it could depend on the environment of the area, how the sun rays are parting through particles in the air, or it jus might be the amount of heat radiation is coming down cause it could be a chilly sunny day or a hot sunny day

Which of the following is an example of chemical energy being used?
A.Eating a sandwich
B.Reading a book
C.Switching on a fan
D.Turning on the light

Answers

I feel like it's C. or D. but I guess it's C.

Pleas help with 2 and 4 for brainliest

Answers

mass of pentane : = 30.303 g

moles of Al₂(CO₃)₃ : = 0.147

Further explanation

Given

1. Reaction

C₅H₁₂+8O₂→6H₂O+5CO₂.

45.3 g water

2. 2AlCl₃ + 3MgCO₃ → Al₂(CO₃)₃ + 3MgCl₂

37.2 MgCO₃

Required

mass of pentane

moles of Al₂(CO₃)₃

Solution

1. mol water = 45.3 : 18 g/mol = 2.52

From equation, mol ratio of C₅H₁₂ : H₂O = 1 : 6, so mol pentane :

= 1/6 x mol H₂O

= 1/6 x 2.52

= 0.42

Mass pentane :

= mol x MW

= 0.42 x 72.15 g/mol

= 30.303 g

2. mol MgCO₃ : 37.2 : 84,3139 g/mol = 0.44

mol Al₂(CO₃)₃ :

= 1/3 x mol MgCO₃

= 1/3 x 0.44

= 0.147

Explain how Coulomb's law can help you understand why some interparticle forces are stronger than others.

Answers

Answer:

Coulombs equation involves distance and the distance from one radius to the next allows us to predict certain characteristics such as pull and attraction. For example, you would expect, a higher charge on the ion and a higher dipole moment causes a larger force. This is due to the magnitude which is the distance between these two and effectively that is how Columbus law comes into play.

Coulomb's law states that the force of repulsion or attraction among both two charged bodies is directly proportional to the product of their charges as well as inversely proportional to the square of the length between them.

What is Coulomb's law?

An electric force is created when two charged particles collide. The forces will be greater if you have larger charges.

Coulomb's Law can be understood by combining these two ideas and the fact that charges can attract and repel each other. It is a formula for calculating the electrical forces between two objects.

Coulomb's equation involves distance, and the distance between two radiuses allows us to predict certain characteristics such as pull and attraction.

As you might expect, a higher charge on the ion and a higher dipole moment result in a greater force. This is due to the magnitude of the distance between these two, and this is where Columbus law comes into play.

Thus, this way, Coulomb's law can help you understand why some interparticle forces are stronger than others.

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DESCRIBE the five types of chemical reactions
(Synthesis, Decomposition, Single displacement, Double displacement, Combustion)

Answers

Syntesis- is a reaction that occur when two different atoms interact to form a different compound.
Decomposition- is a reaction in which compound breaks down into two or more simple substances.
Single displacement- is a reaction in which one element is substituted for another element in a compound
Double displacement- is a reaction in which the reactant ions exchange places to form new products.
Combustion- is a reaction in which the substance reacts with oxygen from the air, simply said combustion is when something’s burininv.

The study of chemicals is called chemistry.

When two elements react together to form a new compound is called a reaction.

When two-element join together to form a new compound is called synthesis.

[tex]C + O_2 --> Co_2[/tex]

The breakdown of a compound into two different elements is called decomposition.

[tex]H_20 ----> H_2 + O_2[/tex]

The substitute of one element in the compound is called single displacement.

[tex]Fe + H_2So_4---> FeSo_4+ H_2[/tex]

The substitute of two-element in the compound is called double displacement.

[tex]BaCl + H_2So_4 + ---> BaSo_4 + HCl[/tex]

The burning of the element in the presence of oxygen is called a combustion reaction.

[tex]C + O_2 ---> CO_2[/tex]

Hence, the answer is mentioned above.

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Which of the following is not a unit of volume?

A

L


B

mL


C

m^3

​3

​​


D

cm^2

​2
PLEASE ANSWER ASAP !! NEED THIS HANDED IN TN
​​

Answers

Answer:

The orest one is possible D

Explanation:

The decomposition of 65.9 g ammonium nitrate yields how many liters of dinitrogen monoxide at 2.65 atm and 303 k?

(N= 14.01 g/mol, H= 1.008 g/mol, O=16.00 g/mol)
NH4NO3(s) -> N2O(g)+2H2O(g)

Hint: R = 0.0821 L atm/(mol K)

Answers

It’s 7.72 it took a while but I found the answer

How many significant figures are in the number 90027.00?

Answers

Answer:

Scientific Notation: 3.45 x 10^5

E Notation: 3.45e5

Explanation:

Please help with this

Answers

1. Double-Replacement reactions

2. Decomposition  

3. Combustion

4. Syntesis

5. Single replacement

Further explanation

Given

Chemical equations

Required

Type of reaction

Solution

1. 2AgNO₃ + MgCl₂ ⇒ 2AgCl + Mg(NO₃)₂

Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant

2. 2KBr⇒2K +Br₂

Decomposition  

Single compound breaks down in to 2 or more products

3. C₃H₈ + 5O₂ ⇒ 4H₂O + 3CO₂

Combustion

Hydrocarbon and Oxygen reaction and form water and carbon dioxide

4. NaO + H₂O ⇒ NaOH

Syntesis

2 or more reactants combine to form a single product

5. Zn + CuCl₂ ⇒ZnCl₂ + Cu

Single replacement

One element replaces another element from a compound

List and describe all five types of chemical reactions. thx.

Answers

Answer:

combination, decomposition, single-replacement, double-replacement, and combustion.

Explanation:

66 A student wants to design a controlled experiment to solve the following problem: When placed in a freezer, will hot water or cold water reach 0°C faster?
The student plans to place two containers with equal masses of water (one hot and one cold) in the same freezer in the classroom.
a List three conditions the student should keep constant for the hot-water and cold-water setups when planning this experiment. [3]
b For each condition you name, give a scientific reason why the condition needs to be the same for both the hot-water and cold-water setups

Answers

Answer:

Explanation:

is guiZ

If you add more molecules but do not change the temperature or the pressure, what will happen to the system?
the molecules will move faster
O the volume will decrease
the volume will increase
the molecules will move slower

Answers

Answer:

the volume will increase

Explanation:

The kinetic energy of gas molecules depend upon the temperature . If temperature is increased , the molecules will move faster . When temperature is decreased , they move slower .

Hence when more molecules are added to a gas without changing its temperature , the velocity of gas molecules will remain unchanged .

Since pressure  is also constant , it is volume which will be increased .

It can be explained from universal gas formula as follows

PV = nRT

P , R and T is constant ,

V ∝ n

Volume is proportional to n which depends upon number of molecules .

So volume will increase if number of molecules increases .

(b) 28.2 yd to centimeters

Answers

Answer:

2578.608 centimeters in 28.2 yards.

Explanation:

There are 91.44 centimeters to a yard. Multiplying 91.44 by the number of yards, we get the number of centimeters per yards.

91.44(28.2) = 2578.608

Answer:

hruejhehee7 suhdbdudud d d

Explanation:

jejeij3j3n3jeij

Match the subatomic particle to its best explanation:



PHOTON

a fermion
b composite particle
c weak force
d strong force
e forces
f leptons
g up
h +2/3
i gravity

Answers

Answer:

a

Explanation:

aaaa

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