Plzzzzz help me...This is not my exam paper the is my worksheet and I am preparing for it so without any sus plsss help me ​

Answer:

121.98

Explanation:

As you see the reaction, stoichiometry for both Zn and Ag2O is one so for calculating, we choose the one with less mol. Then in product we have 1.14 mol Ag. As the atomic mass of Ag is 107, we have 121.98 grams of Ag

Hope u get it

Answer:

I have asked question in my profile please tell me the answer

Explanation:

I dont know the answer sorry

Explanation:

because T is const so

deltaS=Q/T=nRLn(V2/V1)

=(14/28)x8.314xLn(30/10)=4,567 J/k

[tex]\\ \sf\longmapsto 9.63\times 10^{-2}m=9.63\times 10^{-2}\times 10^{-9}m=0.0963\times 10^{-9}m=0.0963nm[/tex]

[tex]\\ \sf\longmapsto 6.02\times 10^3ks=6.03\times 10^6s[/tex]

[tex]\\ \sf\longmapsto 8.9\times 10^8\mu g=8.9\times 10^4cg[/tex]

[tex]\\ \sf\longmapsto 4.12\times 10^{-4}Mg=4.12\times 10^{-1}g=0.412g[/tex]

[tex]\\ \sf\longmapsto 7.33\times 10^{-2}Tl=7.33\times 10dL=73.3dL[/tex]

[tex]\\ \sf\longmapsto 0.73kL=0.73(1000)L=730L[/tex]

[tex]\\ \sf\longmapsto 5.93cm^3=0.00000593m^3[/tex]

Done!

The percentage yield of the reaction if 23.1 grams of FeCl₃ is created by 10.61g of Fe is 74.9 %.

Percent yield of a reaction is the ratio of actual yield to the theoretical yield multiplied by 100.

As per the given balanced reaction, one mole or 55.85 g of Fe is needed to produce 1 mole or 162.2 g of FeCl₃.

Then theoretically, the mass of FeCl₃ which can be produced by 10.61 g of Fe is calculated as follows:

= (10.61 × 162.2) / 55.85

=30.81 g

This is the theoretical yield.

The actual yield is given 23.1. Now the percentage yield is calculated as follows:

Percentage yield = (Actual yield/ heretical yield)×100

                             = (23.1/30.81)×100

                             = 74.9 %.

Hence, the percentage yield of the reaction is 74.9 %.

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Answer:

For enlightenment, development and making people understand the usefulness of the product

Answer:

AKA "AD"AND ADS EXPLAIN WAYS IN WHICH THE PRODUCT IS USEFUL ... PLEASE MARK ME AS BRAINLIST

Answer:

Its Thermal Energy

Explanation:

Answer:

A

Explanation:

because in neutral proton equals to electron

The correct option is A.  Potassium has 19 protons, 20 neutrons, and 19 electrons.

Potassium is an element. It has protons and electrons. potassium has a nucleus. The nucleus contains protons and neutrons. Electrons revolve around the nucleus.

Proton is a positively charged atom and an electron is negatively charged and revolves around the atom. Neutron is neutral in charge.

The atomic number of potassium is 19. So it has 19 protons and 20 neutrons and 19 electrons.

Therefore, The correct option is A.  Potassium has 19 protons, 20 neutrons, and 19 electrons.

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Answer:

680 centimeters

Explanation:

because it is

Answer:

{eq}Fe^{2+} {/eq} and {eq}I^- {/eq} forms {eq}FeI_2 {/eq}

{eq}Fe^{2+} {/eq} and {eq}S^{2-} {/eq} forms {eq}FeS {/eq}

{eq}Cr^{4+} {/eq} and...

Explanation:

Empirical formula:

The empirical formula gives the simple ratio of the different types of atoms in a compound. It is different from the molecular formula, which gives the exact number of each type of atom in a compound.

Answer:

pls say the question

Answer:

i cant see anything maybe make the picture bigger,

Explanation: maybe thall help

Answer:

none of the liquid is purple

Answer:

i would think its rapid motion and collision of molecules causing pressure.

Explanation:

it depends on the number so the more gas molecules collide, the more pressure there is. sorry if this doesn't help.

Answer:

collisions of gas particles with the walls of the container.

Explanation:

Answer:

Explanation:

The number of atoms can be found by using the formula

N = n × L

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

N = 0.529 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

A physical change --> is the change in appearance or form Example --> ice melting.

A chemical change --> is the change in chemical composition. Example --> rust

Additionally, physical changes can be reversible (water melting or freezing), while chemical changes can't. Rust cannot be reversed.

Answer:

A dwarf galaxy is a small galaxy composed of about 1000 up to several billion stars, as compared to the Milky Way's 200–400 billion stars

Answer:

A dwarf galaxy is a small galaxy composed of about 1000 up to several billion stars, as compared to the Milky Way's 200–400 billion stars.

Explanation:

same answer for me

Answer:

Carbon dioxide

Explanation:

A byproduct of fossil fuel combustion, is the principal greenhouse gas contributing to global warming. However, other greenhouse gases including methane, nitrous oxide, and a number of industrial-process gases also are important contributors to climate change.

Answer:

−0.75 , 1.25

Explanation:

Please refer to attachment for more information

Answer:

10 mol, or 1.667L

Explanation:

__mol=400gNaOH * [tex]\frac{1mol}{39.99g}[/tex]

__L=400gNaOH * [tex]\frac{1mol}{39.99g}[/tex]  * [tex]\frac{1L}{6M}[/tex]

Which one are you solving for? The top is for number of moles and the bottom is number of liters. You already have the mass so you are obviously not solving for that.

Answer:

The term unicellular and multicellular describe how living things are organized.

Explanation:

The number of cells in living things determine how the body organization will be.

Living things are made up of cells in which there are two types of living cells. We have the unicellular and multicellular cells.

The unicellular are made up of one cell (single cell) the unicellular organisms are simple cells which make their functions simple while the multicellular organisms are made up of two or more organisms and their functions are special unlike the unicellular which the functions are simple

Explanation:

Answer:

Hey there

A) how they are organized.

Multicellular organisms are organized by being made of many cells, such as you and me. However unicellular organisms as the name suggest are made of only one cell, such as bacteria.

Answer: 5.44×10226.022140857(74)×1023⋅mol−1.

Explanation: So the answer is approx. 0.10⋅mol

Answer:

Ba

Explanation:

bc it = 268 pm

Answer:

Tedious calibration No instrument protocol Operator dependent readings( limited accuracy) Long and difficult thermosetting (water bath is required after each experiment)

Explanation:

hope it helps you

brainliest plz if it helped

Answer:

The limiting reagent is O2. The theoretical yield of N2O4 is 6 moles.

The limiting reactant is nitrogen.

In a chemical reaction, two or more species combine to form products. The amount of all the reactants in the system are usually not the same. The specie that is present in the least amount is called the limiting reactant. The reactant that is present in the greatest amount is called the reactant in excess.

Looking at the image, there are six oxygen molecules and two nitrogen molecules hence nitrogen is the limiting reactant and oxygen is the reactant in excess.

Since the equation of the reaction is; 2N2 + 4O2 --->2N2O4, it follows that there are two excess oxygen molecules that are left unreacted. Two N2O4 molecules are formed.

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Missing parts:

The illustration to the left represents a mixture of nitrogen (blue) and oxygen (red) molecules.

If the molecules in the above illustration react to form N2O4 according to the equation N2 + 2O2 N2O4

the limiting reagent is___?___

the number of N2O4 molecules formed is___?___

the number of___?___molecules in excess is___?___

In the given chemical reactions, the statement that is true is A synthesis reaction, and B is a decomposition reaction. The correct option is C.

Synthesis reactions are those reactions in which two reactants combine to form a single big product or compound. Like the first one reaction in which the magnesium and oxygen combine to create two moles of magnesium oxide. A + B = AB. When

Decomposition reactions are those reactions in which one reaction or compound breaks down to comprise two smaller products. Like the second reaction, calcium chloride breaks down into calcium oxide and carbon dioxide. AB = A + B.

Thus, the correct option is C. A is a synthesis reaction, and B is a decomposition reaction.

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A liquid becomes a solid if its temperature decreases. In general a gas becomes a liquid or solid when it is cooled. Particles have less energy and therefore move closer together so that the attractive forces become stronger, and the gas becomes a liquid or a solid.

Attractive forces between particles: Very strong ...

Spaces between particles: Very little space bet...

Energy and movement of particles: Low energy - ...

Answer:

Phosphorus would be the correct answer I guess

Answer:

0.05909882564 mol

Explanation:

PV=nRT

n = 1.00atm*1.50L /(0.0821L.atm/mol.k * 309.15 k)

= 0.05909882564 mol