What is the proof of the chemical reaction?

Answer:

Air

Explanation:

Did test 100

Answer:

A mixture is a substance of different things combined together.

Explanation:

Hope this Helps!

A mixture is a portion of matter made up of two or more substances called constituents. Mixtures are the product of the mechanical joining of substances without change in chemical nature, and therefore, each constituent retains its properties.

the option 4

Answer:

what do you mean by this ?

Explanation:

Answer:

Sand has a grainy form

Explanation: That's all I know for now

Answer:

Radiocarbon dating works by comparing the three different isotopes of carbon. Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons. This means that although they are very similar chemically, they have different masses.

Explanation:

Answer:

A; 0.5

Explanation:

To find the density, you have to do the Mass divided by the Volume; in this case, it's 8.0/4.0.

8/4 = 0.5

Answer:

i think its D

Explanation:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Taking into account the law of conservation of mass,

The Law of Conservation of Matter is also called the law of conservation of mass or the Law of Lomonósov-Lavoisier. This law postulates that "The mass is not created or destroyed, only transformed."

This means that the reagents interact with each other and form new products with different physical and chemical properties than those of the reagents. And this is because the atoms of the substances are ordered differently.

But the quantities of the masses involved in a given reaction must be constant throughout it, that is, they will not have changed in their proportions when the reaction ends. Then the mass before the chemical reaction is equal to the mass after the reaction.

The exception to the rule is nuclear reactions, in which it is possible to convert mass into energy and vice versa.

Finally, the correct answer is option A. because the atoms of the substances are ordered differently, this is the reagents interact with each other and form new products.

Learn more about law of conservation of mass:

Answer: +2

Explanation: Formula of oxide is MgO, because oxidation state of Mg in MgCO3 is +2.

Answer:

The phases of the species should be indicated by the spacing and distribution of the particles in the diagram

Explanation:

Evaporation would be a phase change from liquid to gas where intermolecular forces are broken CCl4 (l) -> CCl4 (g)

Diagram is attached below

We have that  from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state.

From the question we are told

CCl4(l) is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates. In the box below, draw a particulate diagram to show the species in the container after some of the CCl4(l) has evaporated. The phases of the species should be indicated by the spacing and distribution of the particles in the diagram. Some of the species shown in the legend will not be used.

Generally

We will see from the diagram that when CCl4(l)  is placed in a previously evacuated container at 30°C , and some of the CCl4(l) evaporates that the molecules of CCl4(g)  becomes loosely held and apart from while in its closely held in its liquid state

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Answer:

Shiny like a limousine

You're spending like a cash machine

Smile, show your golden teeth

That's how you cover up your cavities

You're glowing like a diamond ring

I saw you bought some other things

You're spending like a cash machine

To cover up your insecurities

Don't front, no need ty67t6767

Explanation:

Answer:

Exothermic

Explanation:

Answer:

Physical change

Explanation:

Answer:

Helium

Explanation:

Answer:

helium i guess i m not sure

Answer:

Probability

Explanation:

Answer:

To say to you that you've made a mistake

Explanation:

Answer:

Correct distribution of your weight and shifting of your center of gravity are crucial for the mantling technique to...

Bring your foot as high as you can, preferably planting down the heel.

Free up your arms so that you can rotate your hand and push down with your palm.

Remember to chalk up.

Answer:

Nitrous Acid [tex]N_{2}O_{3}[/tex]

Nitrogen is in the +3 oxidation state in N2O3. Nitrous acid is a weak acid.

The compound contains nitrogen with an oxidation number of +3 is N₂O₃ and nitrous acid HNO₂. Nitrous acid is a weak acid.

The term oxidation state is defined as the total number of electrons that an atom either gains or loses in order to produce a chemical bond with another atom. The oxidation state is also called as oxidation number.

The formula for calculating oxidation states would be : The Highest Oxidation State for a Transition metal = Number of Unpaired electrons + Two s-orbital electrons.

The compound contains nitrogen with an oxidation number of +3 is N₂O₃ because it can acquire three electrons to form a chemical bond and to complete its outermost orbit (octet).

Thus, The compound contains nitrogen with an oxidation number of +3 is N₂O₃ and nitrous acid HNO₂.

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Answer:

Energy is halved.

Explanation:

Energy and Frequency are directly proportional. If frequency decreases, energy increases. If frequency increases, energy increases. If frequency is halved, energy is also halved.

Answer:

A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust.

Explanation:

Answer: when one chemical substance is transformed into one or more different substances.

Explanation:

Answer:

Each ion, or atom, has a particular mass; similarly, each mole of a given pure substance also has a definite mass. The mass of one mole of atoms of a pure element in grams is equivalent to the atomic mass of that element in atomic mass units (amu) or in grams per mole (g/mol).

Explanation:

The relationship between the given terms is provided below throughout the below segment.

We can say that,

→ [tex]1 \ mole \ in \ gram \ of \ an \ element = Atomic \ mass \ of \ an \ element[/tex]

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Answer:

The form of energychemical energy

Answer:

5s

Explanation:

Answer:

d

Explanation:

Answer:

A

Explanation:

When the tectonic plates slide across each other they cause a huge vibration making the area around Shake if its a big enough of vibration it can breach the surface causing a huge crack.

Answer:

its C

Explanation:

just took the quiz

Answer:

2, 3, 4, 5

Explanation:

Pretty sure protons matter a lot unless in acid and bases but ignore this. Atoms mostly empty space as electrons are reeeeeeeeeeaaaallllllyyyy far apart. number of electrons change it is an ion and neutrons change pretty sure its an isotope. Electrons are stupidly small and fast so they don't really count towards the weight. Most mas comes from neutrons and protons in the nucleus

Answer:

2,3,4,5

1st is wrong cuz if u change the number of proton it would change the atomic number which results in different element

6th is wrong because most mass of the atoms come from neutrons and protons collectively so if it would have said THE ATOMS MASS MOSLTY COMES FROM NUCLEONS then u could mark it right

Answer:

Solid

1. Stone

2. Brick

Liquid

1. Water

2. Oil

Gas

1. Oxygen

2. Nitrogen

Answer:

rock and sand, water and steam, smoke and hydrogen

Explanation:

rock and sand are solids, water and steam are liquids, smoke and hydrogen are gases. trust me i know this

Answer:

I'm confused on what u need us to answer