what is the answer to this question? i do not know what the names are

Answer:

True

Explanation:

The number of electrons are what determine an atom.

The number of electrons = number of protons

so the elements are different.

If the number of neutrons are different but the number of electrons and protons are same they are of the same element.

But here the number of protons are different so this is another element.

The volume of oxygen that would react at STP will be 6.00 L

From the equation of the reaction:

[tex]2Zn + O_2 --- > 2ZnO[/tex]

The mole ratio of [tex]O_2[/tex] to the ZnO produced is 1:2

Mole of 35 g Zn = 35/65.3 = 0.536 moles

Equivalent mole of  [tex]O_2[/tex] that will react = 0.536/2 = 0.268 moles

1 mole of gas at STP = 22.4 L

0.268 moles of gas = 0.268 x 22.4 = 6.00 L

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The can will burst at 938.45 K.

Gay Lussac's Law states that the pressure of a fixed amount of gas is directly proportional to the absolute temperature at constant volume.

i.e. P ∝ T

P= KT

P₁ = KT₁

P₂ = KT₂

Here we have considered that the gas is at two different temperatures and pressures which is denoted by T₁ , T₂ and P₁ , P₂

It can also be written as

(P₁ /P₂ )  = (T₁ / T₂)

It is given that

P₂ = 14.29 atm

P₁  = 4.535 atm

T₁ = 298.15 K

T₂ = ?

T₂ = (298.15 * 14.29 )/ 4.54

T₂ = 938.45 K

Therefore the can will burst at 938.45 K.

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A. because he might be in trouble in a play

Answer:

32

Explanation:

The total valence electron is available for the Silicon tetrachloride

lewis structure is 32

There are a lot you want to know about heat transfer.

If u understand the mode of heat transfer well, then heat transfer is easy to continue.

Answer:

1: They give to the body Vitamin  D 2: they give solar energy and that is what gives us revaluation around the sun (Drag) 3: it gives plants energy for photosynthesis (or dont know)

4:solar panels gives energy by the sun radio controlled area that gives us the battery's, lights etc...

Explanation:

EXPLAIN IT

The atomic number of sodium atom (Na) is 11.

Atomic number of any atom is denoted by the symbol Z, and it is equal to the number of protons or electrons present in that atom.

In the sodium atom, number of proton is equal to 11 and number of electrons is also equal to 11. So the atomic number of sodium atom is 11.

Hence atomic number of sodium is 11.

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The atomic number of sodium is 11.

1. The atomic number of an element represents the number of protons in the nucleus of its atom.

2. Sodium is an element with the symbol Na, and its atomic number can be found on the periodic table.

3. Locate sodium (Na) on the periodic table. It is in the third period and belongs to Group 1, also known as the alkali metals.

4. The atomic number is usually displayed above or below the element's symbol. In the case of sodium, the atomic number is 11.

5. Therefore, the atomic number of sodium is 11. It means that a neutral sodium atom has 11 protons in its nucleus.

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Answer:

[tex]\\ \rm\dashrightarrow Chemical\: Equation [/tex]

Explanation:

When a chemical change happens or chemical reaction happens something yields at reactants and something at products

Representing them is called chemical equation

Answer:

17.03052

Explanation:

thats the answer i got hope this helps at all

Answer:

most often helium and argon, the least expensive—are used to provide chemically unreactive environments for such operations as cutting, welding, and refining of metals such as aluminum (atmospheric oxygen and, in some cases, nitrogen or carbon dioxide would react with the hot metal).

hope this helps

Electrons are moved between two substances.

Lower rate after another 3 seconds of the given rate is concentration of reactants increased while the concentration of product decreased.

Rate of the reaction gives idea about the speed of the completion of the reaction or the formation of product.

Given rate of reaction = 1.8×10⁻⁶ m/sec

After 3 seconds rate of the reaction decreases, which means speed of the formation of product decreases as a result of which:

Hence, concentration of reactants increased while the concentration of product decreased.

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Answer:

B.  The concentration of reactants decreased while the concentration of product increased.

Explanation:

i took the test

Answer:

The answer is c hope it is right if it is rong please tell me tho :)

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Let's balance the given equation ~

[tex]\qquad \sf  \dashrightarrow \:S_8 + O_2 \rightarrow SO_3[/tex]

[tex] \textsf{Step 1 - balance Sulphur (S) on both sides} [/tex]

[tex] \textsf{[ By multiplying} [/tex] [tex] \sf{SO_3} [/tex] [tex] \textsf{by 8 on product side ]} [/tex]

[tex]\qquad \sf  \dashrightarrow \:S_8 + O_2 \rightarrow 8 \: SO_3[/tex]

[tex] \textsf{Step 2 - balance Oxygen (O) on both sides} [/tex]

[tex] \textsf{[ By multiplying} [/tex] [tex] \sf{O_2} [/tex] [tex] \textsf{by 12 on reactant side ]} [/tex]

[tex]\qquad \sf  \dashrightarrow \:S_8 +12 \: O_2 \rightarrow 8 \: SO_3[/tex]

So, we can infer that the Correct choice is D

Answer:

4

Explanation: it's a carbon atom right....soo it'll form 4 bonds(single)

An atom can form 4 single covalent bonds is carbon with two electron shell.

The bonds are defined as a strong bond that binds atoms, ions, or molecules together and promotes the production of molecules.

There are three types of bonds.

Covalent bonds are defined as the bond formed by sharing of electrons with each other.

Covalent bonding is a stable equilibrium of the attractive and repulsive forces between two atoms that occurs when they share electrons. Bonding pairs or sharing pairs are other names for these electron pairs.

It can also be defined as a type of chemical link where atoms share electrons to create electron pairs.

Covalent bonds  has low melting point, boiling point, enthalpy of fusion and enthalpy of vaporization.

Thus, an atom can form 4 single covalent bonds is carbon with two electron shell.

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Answer:

D. increased human industrial activities

Answer:

Hydrogen bonding is a special type of dipole-dipole interaction that occurs between the lone pair of a highly electronegative atom (typically N, O, or F) and the hydrogen atom in a N–H, O–H, or F–H bond.

Answer:

To produce 1 mole of N2O required 1 mole of NH4NO3 . Hence, 60 grams of NH4NO3 are required to produce 33.0 g N2O

Explanation:

HOPE IT HELPS.

PLEASE MARK ME AS BRAINLIEST.

Answer:

B.) If sodium carbonate is added to vinegar, the reaction will absorb heat.

Explanation:

A.) is incorrect because this is not testable. Rather, it is just an opinion that cannot be proven correct or incorrect.

B.) is correct because this statement is testable. Tests need to be run to determine the accuracy of the statement.

C.) is incorrect because this statement explains something that does not need to be tested. It is an example of a physical change when one tears a piece of paper.

D.) is incorrect because this is already a true statement. It is obvious that not all reactions absorb/release heat. While tests could be run to further prove this statement true, it is already considered accurate.

We have the balanced reaction equation as; V2O5 + 5CaS → 5CaO + V2S5.

A balanced reaction equation is one in which the number atoms atoms on the reactant side is the same as the number of atoms on the products side.

In that case, we have the balanced reaction equation as; V2O5 + 5CaS → 5CaO + V2S5.

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Answer:

d

Explanation:

got 100

Now

At STP any gas weighs 22.4L

Volume of H_2

Answer:

The removal of this ion from water by the calcifiers will definitely decrease the pH of water.

What is the bicarbonate ion?

The bicarbonate ion is the ion that is designated as HCO3-. We must notice that this ion is present in abundant amounts in the sea. This amount definitely make the sea slightly alkaline.

Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.

Explanation:

The removal of this ion from water by the calcifiers will definitely decrease the pH of water.

The bicarbonate ion is the ion that is designated as [tex]HCO^{3-}.[/tex] We must notice that this ion is present in abundant amounts in the sea. This amount definitely makes the sea slightly alkaline.

Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.

Hence, the removal of this ion from water by the calcifiers will definitely decrease the pH of water.

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A model of materials will show dense materials having tightly packed particles while less dense materials will have greater spaces between their particles.

Density is a measure of the compactness of a material.

Density is defined as the ratio of mass to the volume of a substance.

Dense materials have tightly packed particles while less dense materials have greater spaces between their particles.

Avogadro's hypothesis applies to substances in gaseous form since they do not have a constant volume.

Therefore, a model of materials will show dense materials having tightly packed particles while less dense materials will have greater spaces between their particles.

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The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.

Radioactive elements are elements that involved in radioactivity and this comprises of atoms or particles in their nuclei whose atomic nuclei are not stable and they emit radiations to maintain stability.

Therefore, The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.

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Answer:

Explanation:

pure chemical substances and element.

All elements are pure. If this sample of copper had been impure, we would call it a mixture, not an element.

Some of the applications of fission reactions are as follows:

Nuclear fission is a nuclear reaction in which a large nucleus splits into smaller ones with the simultaneous release of energy.

Nuclear fission involves the release of radioactive particles which causes a decrease in the number of atoms.

Nuclear fission have the following applications in industry:

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Answer:

18.375 gm left

Explanation:

1/2 ^4 = 1/16th will be left     (see the '4' representing 4 half lives?)

294 * 1/16 = 18.375 gm