Which of the following are found outside the nucleus?
Select 1 correct answer(s)
neutron
proton
electron

According to Avogadro's number there are 62.53 atoms of chlorine in 1.1x 10\(^-21\) moles of Cl atoms.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number or number of moles×Avogadro's number.

ON substitution in above formula number of atoms=1.1×10²¹×6.023×10²³=62.53 atoms

Thus, there are 62.53 chlorine  atoms in 1.1x 10\(^-21\) moles of Cl atoms.

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The molecular formula : Al₂Cl₆

Given

20.2% by mass of Aluminum and 79.8% by mass of Chlorine.

Required

the molecular formula

Solution

Aluminium (Ar=27 g/mol)

\(\tt \dfrac{20.2}{27}=0.748\)

Chlorine(Ar=35.5 g/mol)

\(\tt \dfrac{79.8}{35.5}=2.248\)

mol ratio Al : Cl =

\(\tt \dfrac{0.748}{0.748}\div \dfrac{2.248}{0.748}=1\div 3\)

So the empirical formula = AlCl₃

(Empirical formula)n=Molecular formula

(27+3.35.5)n=267

(133.5)n=267⇒n=2

The molecular formula : Al₂Cl₆

Answer:

Anaxagoras was perhaps the first literate person to attempt to explain physical phenomena rationally, basing his ideas upon careful observations and simple experiments. This is fundamental to modern science and is the sine qua non of environmental study.

Answer:

Radiation

Explanation:

Sun rays shine on earth. Thats radiation.

Answer:

its sodium hydroxide

Explanation:

The limiting reactant between the reaction of 6 moles of oxygen and 12 moles of mercury is mercury (Hg)

4Hg + O₂ —> 2Hg₂O

From the balanced equation above,

4 moles of Hg reacted with 1 mole of O₂

From the balanced equation above,

4 moles of Hg reacted with 1 mole of O₂

Therefore,

12 moles of Hg will react with = 12 / 4 = 3 moles of O₂

From the above calculation, we can see that only 3 moles of O₂ out of 6 moles given is required to react completely with 12 moles of Hg.

Thus, Hg is the limiting reactant and O₂ is the excess reactant .

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Transition Metals is more often used to conduct electricity. Transition metals have free electrons in outer energy levels because d-orbitals shields poorly. That's why transition metals are good conductor of heat and electricity.

Transition metals are similar to main group metals in many ways, including their metallic appearance, malleability and ductility, ability to conduct heat and electricity, and ability to form positive ions.

In the periodic table, transition metals are found between s-block and p-block elements. D-block elements is the name given to them. A family of metals that display instability and transitional behavior between s block and p block elements are referred to as "transition metals."

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Diagram represents an element that is likely to form covalent bonds is a purple circle with 3 concentric circles around it

Covalent bond means it consist of mutual sharing of one or more pair of electron between two atom and covalent bond diagram consist of in the middle the small circle which is purple color and three concentric circles around the purple circle and covalent bond diagram show the electron dot formulas and they often reffred to as lewis structure and are little different than electron dot formula used to represent the ionic bond

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Answer:

The element X is sulfur.

Sulfur will gain 2 electrons to become an ion.

The charge of sulfide ion is (2-).

Explanation:

Answer:

B.Cu

Explanation:

n the reaction H2 is oxdized since it has lost electrons and Cu is reduced since it has gained electrons

Answer:

1455.6

Explanation: you first convert 2250ml to l by dividing by 1000 so you get 2.25l then you use Boyles law which is p1v1=p2v2 then insert values

35.75*100=p2*2.25 then divide both sides by 2.25 then you get 1455.6

Answer

Cu I ( valance number of copper is 2 and valance number of iodide is 1)

so CuI2 so the answer is B.

Answer

E. Food flavoring

Explanation

Aldehydes are a potent class of flavor chemicals which make important contributions to the flavor effect in a wide range of fresh and prepared food products from fruits, spices, roasted and baked goods to vegetables.

Answer:

you can see the empirical formula at the pic

The empirical formula for compound (a) is NiI2, (b) is BaBr2 and (c) is BeS.

Empirical formula of a compound is defined as the simplest whole number ratio of atoms present in a compound.

(a) 1.245 g Ni : 5.381 g I

Mole of Ni ; Mole of I = 1.245/59 : 5.381/127 = 0.02 : 0.04 = 1:2

So the formula is NiI2

(b) 2.677 g Ba : 3.115 g Br

Mole of Ba : Mole of Br = 2.677/137 : 3.115/60 = 0.019 : 0.038

= 0.02 : 0.04 = 1:2

So the formula is BaBr2

(c) 2.128 g Be : 7.557 g S

Mole of Be : Mole of S = 2.128/9 : 7.557/32 = 0.2 : 0.2 = 1:1

So the formula is BeS

Thus, empirical formula for compound (a) is NiI2, (b) is BaBr2 and (c) is BeS.

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The compound that may be classified as a binary compound is NH4Cl.

A binary compound is a type of chemical compound that is composed of two different elements. These elements can be either a metal and a nonmetal or two nonmetals. Binary compounds are named using a system of nomenclature that involves using prefixes and suffixes to indicate the number and type of atoms in the compound.

For example, the compound formed by sodium (Na) and chlorine (Cl) is a binary compound called sodium chloride (NaCl), while the compound formed by carbon (C) and oxygen (O) is a binary compound called carbon dioxide (CO2).

NH4Cl is composed of two elements, nitrogen (N) and hydrogen (H), and is classified as a binary compound.

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The correct answer is Option 2: The overall reaction is>

The reaction of hydrogen and iodine chloride produces hydrogen iodide as an intermediate. This means that the rate of the reaction is determined by the concentrations of all three species:

The rate law, which expresses the relationship between the rate of the reaction and the concentration of the reactants, is rate = k [H2] [HI] [ICI], where k is the rate constant. This means that the rate of the reaction is proportional to the concentrations of H2, HI, and ICI.

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The container will expand to 4.0 L when it holds 2.4 moles of the same gas.

To answer your question, we will use the concept of Avogadro's law, which states that the volume of a gas is directly proportional to the number of moles (n) of the gas when the temperature and pressure remain constant.

Mathematically, it can be represented as:
V1/n1 = V2/n2

where,

V1 and n1 = initial volume and moles of the gas

V2 and n2 = final volume and moles of the gas

Given the initial conditions,

V1 = 3.0 L

n1 = 1.8 moles

The final condition,

n2 = 2.4 moles.

To find V2, Using the given values and rearranging the formula, we have:

V2 = V1 * (n2/n1)

V2 = 3.0 L * (2.4 moles / 1.8 moles)

V2 = 3.0 L * (1.3333)

V2 = 4.0 L

So, when the container holds 2.4 moles of the same gas, it will expand to a volume of 4.0 L. This is because the number of moles of the gas has increased, and according to Avogadro's law, the volume must also increase proportionally to maintain a constant temperature and pressure.

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Answer:

What are the 26 states of matter?

Bose–Einstein condensate.

Fermionic condensate.

Degenerate matter.

Quantum Hall.

Rydberg matter.

Rydberg polaron.

Strange matter.

Superfluid

Answer:

d. positron

that's the answer brainly tells me I need to write at least 20 characters and that's d u m b.

First, these types of reactions are simple displacement reactions.

We must pay attention to the reactivity series. This reactivity series predict if a simple displacement reaction occurs or not.

Zn + HCl

Answer:

d) It incorrectly describes the two processes

Hope it helps you

And please mark it as the brainliest answer

Tying marshmallows utilising toothpicks together was difficult about building the model

Building the construct was challenging because of the toothpicks used to connect the marshmallows.

• The Salt Model consists of three layers that can be stacked on top of one another to form a NaCl unit cell.

Using the model in two different orientations is possible if the layers are connected.

• As shown by the salt model, the majority of basic inorganic compounds are composed of ions that interchange endlessly rather than discrete molecules.

Little marshmallows could serve as an analogy for the tiny sodium atoms.

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Answer:

a. <1.0

b. 1.30

c. 3.00

d. 11.00

e. 12.70

Answer:

1. NaCl

2. NH4F

3. MgO

4.LiCl

5. KI

6. CaO

Explanation:

In that order

Answer:

.0000000000000000000003

Explanation:

Energy is released by the formation of chemical bonds, and energy is

absorbed when the bonds are broken.

A chemical reaction involves the formation of new compounds from

reactants . It involves the formation and breaking of bonds in the

elements.

Energy is released by the formation of chemical bonds and this type of

reaction is referred to as exothermic while energy is absorbed when the

bonds are broken and is referred to as an endothermic reaction.

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Answer:

w=mg

w=mG

m

W=m/9

m

W=m/g

Answer:

5.6L

Explanation:

16.0g. =?

(16.0×22.4)÷64.07

=5.5939

approximately 5.6L

The average weight loss is 0.739 mg/s.

The total weight lost by the individual = 15 lb

To convert Ib to mg

1 Ib = 453592 mg

15 lb = 15 lb * 453592 mg/ 1 Ib

= 6803880 mg

The time taken for the weight loss = 3.5 months

Number of seconds in 3.5 months = 9.198 * 10^6 seconds

Hence;

Average weight loss in milligrams per second (mg/s);

Weight lost/ time taken

6803880 mg/9.198 * 10^6 seconds

= 0.739 mg/s

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The percent error to 2 significant figures is 11%.

What is Titration?

Titration is a laboratory technique used to determine the concentration of a solution by reacting it with a standard solution of known concentration. The process involves adding the standard solution to the solution of unknown concentration until the reaction is complete, at which point the amount of standard solution needed to reach the endpoint is used to calculate the concentration of the unknown solution.

The relationship between pKa and Ka is given by:

pKa = -log(Ka)

Rearranging this equation, we get:

Ka = 10^(-pKa)

Substituting the given value of pKa = 4.06, we get:

Ka = 10^(-4.06) = 7.01 x 10^(-5)

The experimental Ka for benzoic acid is 7.01 x 10^(-5).

To calculate the percent error, we use the formula:

percent error = (|experimental value - accepted value| / accepted value) x 100%

Substituting the given values, we get:

percent error = (|7.01 x 10^(-5) - 6.3 x 10^(-5)| / 6.3 x 10^(-5)) x 100%

percent error = 11.19%

The percent error to 2 significant figures is 11%.

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