Which of the following has the same empirical and molecular formula?
O P3N5
O C4H8
O C5H1005

Answer:

Patter 1: Ionization Energy Decreases going down a group

Pattern 2: Ions tend to gain/lose the least amount of electrons

Take oxygen, for example.  Oxygen has 8 electrons. To become like a noble gas it could either gain two to become  like neon or it could lose six to become like helium. So what will oxygen do—gain two  or lose six? As a general rule, atoms will gain or lose the fewest number of electrons  possible.

Explanation:

Answer:

An exothermic reaction is going to produce energy.

Explanation:

rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.

Answer:

I was traveling on a train where I fell asleep. someone stole my luggage in which I had money and other essentials. when the ticket checker arrived a lady paid my fine. she helped me a lot. when I told her about being robbed she helped me and took me to the police station and I found my bag. I insisted she take the money she paid for my fine but she said that in return you too help someone."I have never found such a kind person ever since.".....

Explanation: I think this is what you are looking for. Hope this helps.

Answer:

True

Explanation:

Vacuum packing is a method of packaging that removes air from the package  before sealing. ... On a more short-term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items.

Answer:

no

Explanation:

the atomic number the just the number below the symbol of the element as well as proton number or electron number, however if u want to work out the neutron number you have do mass number (which is on the top of the symbol) substact atomic number/proton number

Answer:

W = 20 J

Explanation:

Given that,

The force acting on the dog, F = 5 N

Distance covered, d = 4 m

We need to find the work done by the dog. The work done by an object is given by :

W = Fd

Put all the values,

W = 5 N × 4 m

W = 20 J

So, 20 J of work is done by the dog.

Answer:

subject

Chemistry, 08.04.2020 04:39 dnprops1544

Based on Avogadro's principle, the coefficients in chemical equations involving only gases

represent two types of quantities. Name the two quantities.

Explanation:

Answer: Molar ratio is the quantity which will correctly convert between two different substances.

Answer: Option B

Explanation:

Molar ratio is used to determine the number of moles of reactants required to convert to desired number of moles of the products and vice versa. As moles are the coefficient written in any chemical equation. The ratio of the number of moles of the reactants to the number of moles of the products will help to determine the molar ratio.

This molar ratio is used as the conversion factor to determine number of moles required in the reactant side for the reactants to form a desired product of desired moles. We can also determine the number of moles utilized from the reactants from the moles obtained in the products using this molar ratio conversion factor.

Answer:

chemical weathering

Explanation:

Chemical weathering is the process responsible for changing the composition of rocks.

Weathering is the process by which rocks are broken down into smaller or tiny pieces.

There are different types of weathering namely;

Chemical weathering is the type of weathering that changes the chemical composition of rocks.

Learn more about chemical weathering at: https://brainly.com/question/14426457

Answer:

BeO

Reaction of beryllium with air

However, powdered beryllium metal does burn in air to give a mixture of white beryllium oxide, BeO, and beryllium nitride, Be3N2. Beryllium oxide is more normally made by heating beryllium carbonate. 2Be(s) + O2(g) → 2BeO(s)

Answer:

Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with

Answer:

Element 38: Strontium

Explanation:

A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy

Answer:

It is the sharing of electrons between atoms with an electronegativity difference below 1.7.

Explanation: Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond.

Answer: Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.

Explanation: A covalent bond forms when the bonded atoms have a lower total energy than that of widely separated atoms.

Answer:

Chemical bonds are forces that hold elements together. it can be either covalent or ionic bonds that are these chemical bonds.

Answer:

Ionization energy is the energy required to remove an electron from a specific atom. It is measured in kJ/mol, which is an energy unit, much like calories. The ionization energies associated with some elements are described in the Table 1. For any given atom, the outermost valence electrons will have lower ionization energies than the inner-shell kernel electrons. As more electrons are added to a nucleus, the outer electrons become shielded from the nucleus by the inner shell electrons. This is called electron shielding .

Explanation:

a little summary

Ionization energy refers to the amount of energy needed to remove an electron from an atom.

Ionization energy decreases as we go down a group.

Ionization energy increases from left to right across the periodic table.

Answer:

Eat healthy food  and exercise daily also undertake good healthcare

There are some special exercises that help to increase brain strength you can do them

Answer:

Acetic acid (CH3COOH), also called ethanoic acid, the most important of the carboxylic acids. A dilute (approximately 5 percent by volume) solution of acetic acid produced by fermentation and oxidation of natural carbohydrates is called vinegar; a salt, ester, or acylal of acetic acid is called acetate.

Answer:

the acid that gives vinegar its characteristic taste. The pure acid is a colourless viscous liquid or glassy solid.

Explanation:

HOPE IT HELPS YOU......

Answer:

b

Explanation:

Answer:The crayosphere- it is the portion of the Earth's surface where water is in solid form for at least one month of the year..-has been shrinking in response to climate warming.The important outcome,however,is the change and the response the human social system (infrastructure,food ,water,recreation) will be have to that change...

I hope It helps

Answer:

50

Explanation:

mookie betts 50 is goated no cap

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When two clear substance combines, an insoluble solid is formed that settle downs as a ________.

[tex] \huge \sf \underline \blue{Answer} \colon[/tex]

When two clear substance combines, an insoluble solid is formed that settle downs as a precipitate.

→A precipitate is a substance to be deposited in solid form from a solution.

______________________________________

Answer:

solid objects

cooler to warmer

sitting on a metal chair.

Explanation:

im correcr

Answer:

C since both are plants which are the producers

Answer:

Cacti and Sage Brush

Explanation:

because they are plants so they produce food on their own

Answer:

The object is moving away from the origin

The object started at 2 meters

The object is traveling at a constant velocity

Explanation:

Statements which best describe motion of object represented by graph are statement A,D and E.

Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.

Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.

Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic  mechanics is based on modern kinematics.

Learn more about motion,here:

https://brainly.com/question/3421105

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Answer:

The volume of 9.0 M copper (II) sulfate stock solution needed to prepare 3.0 L of a 5.0 M solution is 1.667 L

Explanation:

Dilution is a process by which the concentration of a solute in solution is reduced by adding more solvent.

In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.

In a dilution the amount of solute does not vary. What varies in a dilution is the volume of the solvent: as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

The equation used in this case is:

Ci * Vi = Cf * Vf

where

In this case:

Replacing:

9 M*Vi= 5 M* 3 L

Solving:

[tex]Vi=\frac{5 M*3 L}{9 M}[/tex]

Vi= 1.667 L

The volume of 9.0 M copper (II) sulfate stock solution needed to prepare 3.0 L of a 5.0 M solution is 1.667 L