These building bricks are in the same container. What type of matter would it represent?

A. a mixture consisting of two compounds

B. a mixture consisting of two elements

C. a compound

D. a mixture of an element and a compound​

When chlorine react in ionic form, it gain one electron as its electronegativity is very high. chlorine form mostly ionic compound.

An atom or molecule is said to be an ion if a number of its electron pairs have been acquired or lost, giving it a net negative or positive electrical charge.

In other terms, a chemical species has an unbalanced ratio of proton (positively charged particles) to electrons (negatively charged particles). When chlorine react in ionic form, it gain one electron as its electronegativity is very high. chlorine form mostly ionic compound.

Therefore, when chlorine react in ionic form, it gain one electron as its electronegativity is very high.

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Answer:
To find the percent of the capsule that is vitamin A, we need to divide the weight of the vitamin A (700 mcg) by the total weight of the capsule (1.1 g) and multiply by 100.

First, we need to convert the weight of the vitamin A from micrograms to grams:

700 mcg = 0.0007 g

Then we can use the following formula:

(Weight of Vitamin A / Total weight of capsule) x 100 = % of capsule that is Vitamin A

(0.0007 / 1.1) x 100 = 0.63 x 100 = 63%

So, 63% of the capsule is vitamin A, rounded to two significant figures.

Explanation:
Hope this helps!

Photosynthesis is a process by which plants produce their own food using light energy, carbon dioxide, and water. The special structures within a plant that help it during photosynthesis are called chloroplasts. These chloroplasts are found within the mesophyll cells of leaves and contain chlorophyll, which absorbs light energy from the sun.

Generally, During photosynthesis, light energy is converted into chemical energy by the chlorophyll within the chloroplasts. Water is taken in by the roots and transported to the leaves where it is used in the process. Carbon dioxide from the air is also taken in through tiny pores called stomata on the leaves.

The light energy from the sun is used to split the water molecules into hydrogen and oxygen, releasing oxygen into the air as a byproduct. The hydrogen ions are then combined with carbon dioxide to form glucose, which is the plant's food source.

In summary, the photosynthesis process converts light energy, water, and carbon dioxide into glucose and oxygen. This process is essential for the survival of plants and also provides the basis of the food chain for all living things.

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The various interactions for the substances in question are listed below.

1) Oxygen gas (O₂) and water have dipole - induce dipole interaction.

2) Sodium ion and water have ion - dipole force.

3) HCl and CH₃F have dipole - dipole force.

4) Ammonia and water have hydrogen bonding.

Intermolecular forces (IMF) are defined as that of the attractive as well as repulsive forces which thus arise between the molecules in a substance.

Hydrogen bonding would be defined as that of the interaction of a hydrogen atom among both two other atoms with a high affinity for electrons; this bond is relatively weak than that of an ionic bond as well as covalent bond and even though powerful than van der Waals forces.

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The following statement that correctly describes a Lewis acid-base reaction is that the base donates an electron pair to the acid.

Acid-base is a chemical reaction involving acid and base reactants. It can be used in determining the pH.

According to Lewis, an acid is a substance that accepts an electron pair. While a base is a substance that donates or donates electron pairs. The electron transport causes acids and bases to react, resulting in a coordinated covalent bond.

Lewis's acid-base theory is able to explain the acid-base properties of molecules or ions that have lone pairs of electrons or that can accept lone pairs of electrons, such as in the formation of complex compounds.

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Answer: d = 0.958 g/cm³

Explanation:

Density = mass/volume

d = g/cm³ or d = g/mL

Note: cm³ = mL

d = 43.0 g/4.80 cm³

d = 8.96 g/cm³

Three significant figures are in the final answer since there are three significant figures in 4.80 cm³ and 43.0 g.

The work associated with the decomposition of TNT upon detonation can be determined by using the First Law of Thermodynamics.

According to the First Law, the change in internal energy (ΔU) of a system is equal to the heat added to the system (q) minus the work done by the system (w).

In this case, the reaction is exothermic and heat is released, meaning that q is negative. The work done by the system can be calculated using the equation:

w = -PΔV

where P is the pressure and ΔV is the change in volume is used to calculate the work done by the system.

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Answer: 0.232 atm

Explanation:

The pressure inside the chamber can be calculated using the Ideal Gas Law, which states that PV = nRT.

P = pressure (atm)

V = volume (L)

n = number of moles (assumed to be constant)

R = gas constant (0.0821 L·atm/mol·K)

T = temperature (K)

Since we know the initial and final volume of the marshmallow, we can use the equation:

(P1)(V1) = (P2)(V2)

where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

We can plug in the given information:

(1.0 atm)(0.068 L) = (P2)(0.296 L)

Solving for P2, we get:

P2 = (1.0 atm)(0.068 L) / (0.296 L) = 0.232 atm

So the pressure inside the chamber is 0.232 atm.

The Number of atoms per unit cell for Ga = 4 atoms per unit cell. Number of atoms per unit cell for As = 4 atoms per unit cell. Volume density of Germanium in its unit cell = 4.35 × 10²² /cm³

According to published data, GaAs has a number density of 4.42 x 10²²atoms/cm³.

Because it is well known that Ga and As are essentially equally distributed throughout GaAs.

Ga's number density is equal to As's number density (2.21 x 10²² atoms/cm³).

Volume of the unit cell = (lattice parameter)³ = (5.65 × 10⁻⁸)³ = 1.804 × 10⁻²² cm³

a) Number of atoms per unit cell for Ga and As = number density × volume of unit cell = 2.21 × 10²² × 1.804 × 10⁻²² = 4 atoms/unit cell

b) Volume density = Number of atoms per unit cell/volume of unit cell

A germanium unit cell contains 8 atoms (from literature)

Volume of unit cell = (lattice parameter)³ = (5.65 × 10⁻⁸)³ = 1.804 × 10⁻²² cm³

Volume density = 8/(1.804 × 10⁻²²) = 4.35 × 10²² /cm³

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The compounds that are listed on the table are molecular compounds.

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143 millilitres of ethanol have a mass of 113.397 grammes.

The volatile, transparent liquid ethanol, usually referred to as ethyl alcohol, is frequently employed as a solvent in lab settings. It has a density of 0.789 grammes per millilitre and the chemical formula C2H5OH, making it an organic substance.

We can determine the mass of a given volume of a substance since its density is defined as its mass per unit volume.

We only need to multiply the density by the volume of the ethanol to determine its mass, which is 143 millilitres. This calculation's formula is:

Volume times Density = Mass

When we enter the ethanol values, we obtain:

mass = 143 ml x 0.789 g/ml = 113.397 g

Therefore, 143 millilitres of ethanol have a mass of 113.397 grams.

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Answer:

you need to multiply your number of half-lives by how many years are in one half-life. This gives you an age of 2 x 5730 = 11,460 years. Your fossil is of an organism (maybe human) that died 11,460 years ago

Explanation:

The actual yield divided by the hypothetical yield multiplied by 100 is known as percent yield.  The percent yield is  68.04 %.

The percent yield is the difference between the actual yield and the hypothetical yield multiplied by 100.

A number of factors, which will be discussed in more detail in later chapters of the course, can cause a chemical reaction's actual yield to be lower than its theoretical yield.

The percentage yield of a chemical reaction indicates the efficiency of that reaction.

It provides us with information about the percentage of our reactants that successfully transformed into a product in terms of percentages.

[tex]Ca_5(PO_4)_3F + 5H_2SO_4 + 10H_2O $\rightarrow$ 3H_3PO_4 + 5CaSO_4.2H_2O + HF[/tex]

 504.3 g                                                          294 g

 1 x 103 g                                                              ??

[tex](504.3 g ) Ca5(PO_4)_3F \rightarrow H_3PO_4 (294 g)[/tex]

1000 g [tex]Ca5(PO_4)3F \rightarrow[/tex]      ??

theoretical yield of H2PO4 = "[tex]1000\ \times \frac{294}{504.3}[/tex]

                                        = 582.986 g

actual yield = 396 g

percent yield = [tex]"\frac{396}{582}\times 100"[/tex]

                   ="percent yield = 68.04 %"

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Answer:  there are 0.024 moles of CCl4 present in 3.70 grams of this compound

Explanation: To determine the number of moles of a compound present in a given mass, we can use the formula:

moles = mass / molar mass

where molar mass is the mass of one mole of the compound and is measured in g/mol.

The molar mass of carbon tetrachloride (CCl4) is 153.82 g/mol.

So to find the number of moles of CCl4 present in 3.70 grams, we can plug in the values into the formula:

moles = 3.70 g / 153.82 g/mol

moles = 0.024 mol

Therefore, there are 0.024 moles of CCl4 present in 3.70 grams of this compound.

The definitive word for each of the given sentences is as follows:

A microprocessor is a compact and integrated chip that contains the central processing unit (CPU) of a computer. Alan Turing was a British mathematician and computer scientist who played a crucial role in breaking the German Enigma code during World War II. A vacuum tube, also known as a valve, is an electronic component consisting of a glass or metal tube with electrodes sealed inside.

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Answer:

cpu , al , vaccum tube

Explanation:

100% on edge

The volume in mL of the silver nitrate (AgNO₃) stock solution that the chemist should pour out is 281 mL.

Volume (V₁) = 775 mL

Molarity (M₁) = 140 mM = 140 / 1000 = 0.140 M

Molarity (M₂) = 0.386 M

Volume (V₂) = ?

By the formula,

M₁V₁ = M₂V₂

V₂ = (M₁V₁)/M₂

Substitute the values to obtain volume (V₂),

V₂ = (0.140 M × 775 mL)/0.386 M

⇒ V₂ = 108.5/0.386

⇒ V₂ = 281.0 mL

Hence, the volume in mL of the silver nitrate (AgNO₃) stock solution that the chemist should pour out is 281 mL.

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Answer:

1.) The smallest unit of an element that maintains the properties of the element is an atom.

2.) All compounds are molecules, but not all molecules are compounds.

A compound is a substance formed by the chemical combination of two or more elements in fixed proportions. Compounds have distinct properties that are different from those of their constituent elements.

A molecule is a group of two or more atoms held together by chemical bonds. Molecules can be made up of a single type of atom (such as O2 or N2) or a combination of different elements (such as H2O or CO2). Not all molecules are compounds, as some can be made up of a single type of atom.

3.) Mixtures that look the same throughout and have the same composition and properties in all parts of the mixture are called homogeneous mixtures. An example of a homogeneous mixture is salt water, where the salt is evenly dispersed in the water and cannot be seen or felt as separate particles. Other examples of homogeneous mixtures include air, sugar in water, and gasoline.

4.) A heterogeneous mixture that has particles that will mix but slowly settle out is called a suspension. In a suspension, the particles are large enough to scatter light, making the mixture appear cloudy or murky. The particles in a suspension are not evenly distributed throughout the mixture and will eventually settle to the bottom if left undisturbed for a period of time. Examples of suspensions include muddy water, orange juice with pulp, and paint.

5.) Mixtures that look different throughout and have varying composition and properties in different parts of the mixture are called heterogeneous mixtures. An example of a heterogeneous mixture is fruit salad, where different types of fruit are physically combined but remain distinct and can be separated from each other. Other examples of heterogeneous mixtures include granola, a pile of mixed rocks, and a glass of ice water with ice cubes floating in it.

6.) A heterogeneous mixture that has large particles that do not stay mixed is called a colloid. In a colloid, the particles are larger than those in a solution, but smaller than those in a suspension, and are evenly dispersed throughout the mixture. Colloids often appear homogeneous, but the particles will separate if the mixture is left undisturbed for a period of time. Examples of colloids include milk, fog, and whipped cream.

7.) A chemical change is a process in which a substance undergoes a transformation to produce one or more new substances with different chemical properties. In a chemical change, the original substances are broken down and rearranged into new substances, resulting in a permanent change. The substances produced in a chemical change cannot be easily reversed to their original form. Examples of chemical changes include burning, rusting, digestion, and rotting.

8.) A molecule is a group of two or more atoms held together by chemical bonds. When atoms bond together to form molecules, they create new substances with unique chemical and physical properties. Examples of molecules include water (H2O), carbon dioxide (CO2), and glucose (C6H12O6). These molecules are composed of chemically combined particles (atoms) that can no longer be separated into individual atoms by physical means.

9.) A substance made up of different kinds of atoms chemically combined is called a compound.

10.) Yes, mixtures can be classified based on particle size.

In general, mixtures can be classified into three categories based on particle size: solutions, suspensions, and colloids.

A solution is a homogeneous mixture of two or more substances, where the particles are small enough to be evenly dispersed throughout the mixture, giving it a uniform appearance.

A suspension is a heterogeneous mixture of larger particles that will eventually settle out if left undisturbed.

A colloid is a heterogeneous mixture with particles that are larger than those in a solution, but smaller than those in a suspension. Colloids appear homogeneous, but the particles will separate over time if left undisturbed.

This classification based on particle size is useful for understanding the behavior and properties of mixtures, as well as for separating and purifying substances.

11.) Physical changes.

12.) The substance that is dissolved to make a solution is called the solute.

13.) Homogeneous mixtures that have small particles that completely dissolve in one another are called solutions.

14.) The substance that does the dissolving in a solution is called the solvent.

15.) The substance made of elements and compounds that are not chemically combined is called a mixture.

16.) A technique used to separate a mixture of different liquids with different solubilities is called liquid-liquid extraction.

17.) A type of mixture that does have a uniform composition is called a homogeneous mixture.

18.) Elements and compounds are examples of pure substances.

P.S. I hope you learned something!

The strongest intermolecular force is hydrogen bonding.

Ionic bonds and covalent bonds are atomic bonds, meaning they are intramolecular. They are generally stable and relatively irreversible.

Hydrogen bonds, dipole-dipole interactions, and van der Waals forces (London dispersion forces) are some common examples of intermolecular forces. Intermolecular forces will never change the identity of the molecule and cannot be used to add atoms to a compound.

The strongest intermolecular force is hydrogen bonding, which is a particular subset of dipole-dipole interactions that occur when hydrogen is in close proximity to a highly electronegative element. The hydrogen takes on a partial positive charge and the electronegative atoms take on a partial negative charge.

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Answer:

Explanation:

Cu⁺ and S²⁻

You know the charge on copper is +1 and the charge on sulfur is -2. Use the "swap and drop" method to write the formula.

Swap the numbers and then drop them as the subscript for each element. Place the 2 as the subscript on copper and 1 as the subscript on sulfur.

Cu¹⁺ S²⁻

Cu₂S₁

Since we do not write the subscript when it is 1, do not use S₁. Use the formula shown below.

Formula = Cu₂S

You will use the same method to answer the other questions.

Ni²⁺ F¹⁻

Formula = NiF₂

Cr³⁺ Cl¹⁻

Formula = CrCl₃

Observation, theory, and law all play significant roles in the philosophy of science. The statement the reactivity of elements depends on the arrangement of their electrons is a theory.

Chlorine reacts violently with sodium at room temperature and pressure and Neon does not react with sodium at room temperature and pressure are observations.

The statement, If elements are listed in order of the increasing mass of their atoms, their chemical reactivity follows a repeating pattern = law.

In most contexts, the act of sensing the exterior real objects that surround us is known as observation. Observation relies heavily on the use of many sensory organs.

A scientific explanation of a witnessed action or occurrence is an example of what we mean when we talk about theory. It provides an explanation for the observations or events that are based upon any hypothesis that has been demonstrated to be correct. A phenomenon or behavior that has been observed can be described using the term "law." It is widely accepted in most circles as a statement of fact.

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The fact that oxygen is an atom that is strongly electronegative means that when forming a covalent bond with a less electronegative atom, it will pull the electrons more strongly than the less electronegative atom will, resulting in unequal sharing of electrons.

This unequal sharing of electrons means that the bond formed will always be ionic. Additionally, the ionic bond is usually the strongest type of bond, and it can be difficult to break the bond. This makes ionic bonds ideal for holding molecules together or for creating strong materials.

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'Protons and neutrons' is the true statement concerning elements.

What is proton and neutron ?

Protons are positively charged particles with a mass of approximately 1 amu. These positively charged particles are present in the Centre of the atom in the nucleus. Neutrons are electrically neutral particles which have the same mass as a proton.

Protons: Positively charged subatomic particles that reside in the nucleus. Neutrons: Neutrally charged subatomic particles that reside in the nucleus. Electrons: Negatively charged subatomic particles found in the electron shells surrounding the nucleus.

A neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The particle derives its name from the fact that it has no electrical charge; it is neutral.

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The molar volume and average molar volume of propane, butane, and methane at STP are 24.45 L/mol , 24.93 L/mol ; 28.02 L/mol , 24.93 L/mol and 22.41 L/mol , 24.93 L/mol respectively.

The molar volume of a gas is defined as the volume occupied by one mole of gas at standard temperature and pressure (STP), which is defined as 0°C and 1 atm.

The molar volume of a gas can be calculated using the ideal gas law,

PV = nRT,

where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature in kelvins.The molar volumes of propane, butane, and methane at STP can be calculated as follows:

Propane: C₃H₈

At STP (0°C and 1 atm), the molar volume of propane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 24.45 L/mol

Butane: C₄H₁₀

At STP (0°C and 1 atm), the molar volume of butane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 28.02 L/mol

Methane: CH₄

At STP (0°C and 1 atm), the molar volume of methane can be calculated as:

V = (nRT) / P

V = (n x 0.0821 x (273.15 + 0) / 1) / 1

V = 22.41 L/mol

The average molar volume is the sum of the molar volumes divided by the number of gases:

Average molar volume = (24.45 + 28.02 + 22.41) / 3

Average molar volume = 24.93 L/mol

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2 moles of CaSO4 are required to produce 128 g of SO2 in 3CaSO4 + CaS → 4CaO + 4SO2 in this equation.

The term mole is defined as a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.

1 mole = 6.023 × 10²³ molecules

The balance equation is as follows:

3CaSO4 + CaS → 4CaO + 4SO2

1 mole = 6.023 × 10²³ molecules

1 mole SO₂ = 6.023 × 10²³ molecules

128 mole = ?

Molar mass of SO₂ = 64 gram

The numbers of moles in 128 gram SO₂ = 1 / 64 ×128

= 2 moles

Thus, 2  moles of CaSO4 are required to produce 128 g of SO2.

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Answer:

The volume of an object is the amount of space it takes up. In this question, we know that the volume of the gold bar is 7.379 x 10^-4 m^3. We also know that the density of gold is 19.3 g/cm^3. To calculate the mass of the bar, we need to multiply the density of gold by the volume of the bar. The mass will be in grams.

Density = mass / volume

mass = density * volume

mass = (19.3 g/cm^3) * (7.379 x 10^-4 m^3)

mass = (19.3 g/cm^3) * (7.379 x 10^-4 m^3) * (10^6 cm^3/m^3)

mass = 140.4 g

So the mass of the gold bar is 140.4 g (rounded to 3 significant figures)

To write both values of ival and fval to standard output in the specified format, you can use the following code snippet:

#include <iostream>

int main() {

   int ival = 5;

   float fval = 2.4;

   std::cout << "i: " << ival << ", f: " << fval << std::endl;

   return 0;

}

This code snippet will output the following:

The code snippet provided above is a simple example of how to write two values to standard output in the specified format. However, there are many other ways to achieve the same result. For example, you could use the C++ iomanip library to control the formatting of the output. Additionally, the same code can be written in other programming languages such as Python, Java, and JavaScript.

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A certain substance, X, decomposes. 75 % % of X remains after 100 minutes. How much X remains after 200 minutes if the reaction order with respect to X is zero order.

The term zero order reaction is defined as  those in which the concentration of the reactants does not change over time and the concentration rates remain constant.

Zero Order: t(1/2) = [A]o/(2*k),

Therefore, k = [A]o/(2 * t(1/2)), where t(1/2) = 100 min. and [A]o=100% So incorporate condition.

A= - .0005 x 200 mins+1 of introductory fixation approaches zero percent.

Initially Order: Half-life condition k=.00693 remaining with 100 mins half life

Coordinate condition lnx= - .00693x200mins + ln 1 squares with lnx= - 1.386.

Take to the e to counteract ln so x=.25 or 25%

Second Order Initial Concentration of 1, half-existence of 100 mins.

K= .01.

Coordinate condition 1/x = .01 x 200 +1. X

= 33.3%

Thus, A certain substance, X, decomposes. 75 % % of X remains after 100 minutes. How much X remains after 200 minutes if the reaction order with respect to X is zero order.

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