identify the solute and the solvent in each solution composed of the following: 1. 20.0 g of nacl and 120.0 g of h2o 2. 90.0 ml of ethanol, c2h5oh , and 20.0 ml of h2o 3. 0.50 l of o2 and 0.95 l of n2 match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.

A solution is a homogenous mixture of two or more pure substances whose composition can vary within certain limits. A solution generally consists of two components, they are called solute and solvent. The correct option is A.

A solution is called the supersaturated one which contains more dissolved solute than required for preparing the saturated solution and it is generally prepared by heating the saturated solution, adding more solute and then cooling it gently.

A supersaturated solution is unstable. Adding a small amount of the solute, a seed crystal will cause excess solute to rapidly precipitate or crystallize.

Thus the correct option is A.

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Answer:

concentration = mol/volume = 4/2 = 2M

a. Mg and CI:

The chemical formula of the ionic compounds formed between magnesium (Mg) and chlorine (Cl) is . Magnesium has a +2 charge, and chlorine has a -1 charge. To balMgCl_2ance the charges, two chlorine ions are needed for each magnesium ion.

b. Barium and nitrogen:

The chemical formula of the ionic compound formed between barium (Ba) and nitrogen (N) is Ba_3N_2. Barium has a +2 charge, and nitrogen has a -3 charge. To balance the charges, three barium ions are needed for every two nitrogen ions.

c. Ca and P:

The chemical formula of the ionic compound formed between calcium (Ca) and phosphorus (P) is Ca_3P_2. Calcium has a +2 charge, and phosphorus has a -3 charge. To balance the charges, three calcium ions are needed for every two phosphorus ions.

d. Francium and oxygen:

The chemical formula of the ionic compound formed between francium (Fr) and oxygen (O) is Fr_2O. Francium has a +1 charge, and oxygen has a -2 charge. To balance the charges, two francium ions are needed for each oxygen ion.

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Answer:

8;1

Explanation:

eight nitrogen and one oxygen

Answer:

Sodium has 11 electrons and Chlorine has 17 electrons

Explanation:

You can find the number of electrons by looking at the atomic number

The atomic number is the number above the elements on the periodic table

The atomic number is also the number of protons there are too

hope this helps

The half-life of this isotope is 5 years.

Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value. The phrase is frequently used in nuclear physics to refer to how long stable atoms last or how quickly unstable atoms decay radioactively. In a broader sense, the phrase is used to describe any exponential decay (or, very rarely, a non-exponential decay). For instance, the biological half-life of medications and other substances in the human body is discussed in the medical sciences. In exponential growth, doubling time is the opposite of half-life.

The formula that describe the exponential decay is:

N(t)=N0 (1/2)∧(t/t(1/2))

where

N0 is the initial quantity

Nt is the remaining quantity after time, t

t(1/2) is the half-life

So, t(1/2) = (-㏑2)*t/㏑(Nt/N0) = (-㏑2)*10/㏑((100-75)/100) = 5 years.

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Answer:

The mass of lithium hypochlorite are 34.7 grams.

Explanation:

Moles of = 0.594 g. Molar mass of = 58.4 g/mol.

Answer:2

Explanation:

Answer:

2

Explanation:

The amount of heat that is required to melt 5.50 mol of gallium at 1 atm pressure is 33 kJ/mol.

Given that,

Gallium sublimation heat = 277 kj/mol

Gallium vaporization heat = 271 kj/mol

Sublimation, as we know, transforms a sold substance into a gas. Changing from a liquid to a gas is called vaporization.                                        

Hence, using the provided Data, we can derive two equations;

Ga (s)  --> Ga (g) delta, Heat = 277 kJ/mol

Ga (l)  --> Ga (g) delta Heat = 271 kJ/mol

Ga (s) --> Ga (l) delta H = 6 kJ/mol is the result of differentiating these two equations to determine the amount of heat needed to melt one mol.

Therefore, it takes 6 kJ/mol of heat to melt one mol of gallium.

Therefore, 5.5 x 6 = 33 kJ/mol of heat is needed to melt 5.5 mol of gallium.

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Answer:

“spinoff”

Explanation:

Here is just a sampling of the many “spinoff” technologies, as NASA refers to them, resulting from space research and development that we now use in everyday life.

The pressure of the gas  54.76 atm.

To calculate the pressure of a gas, we need to use the ideal gas law equation, which is given by:

PV = nRT

Where:

P = Pressure of the gas

V = Volume of the gas

n = Number of moles of the gas

R = Ideal gas constant (0.0821 L·atm/(mol·K))

T = Temperature in Kelvin

To solve the problem, we need to convert the temperature from degrees Celsius to Kelvin:

T(K) = T(°C) + 273.15

Given:

n = 16.6 moles

V = 6.6 liters

T = 1.5°C + 273.15 = 274.65 K

R = 0.0821 L·atm/(mol·K)

Now we can substitute the values into the ideal gas law equation and solve for P:

PV = nRT

P * 6.6 = 16.6 * 0.0821 * 274.65

P * 6.6 = 361.429569

P = 361.429569 / 6.6

P ≈ 54.76 atm

Therefore, the pressure of the gas is approximately 54.76 atm.

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False. Bottled water sold within the same state in which it was retrieved is not exempt from FDA inspection.

The U.S. Food and Drug Administration (FDA) regulates bottled water as a food product, and its standards and requirements apply regardless of the distribution within a single state. The FDA has established the Current Good Manufacturing Practices (cGMP) specifically for bottled water manufacturers to ensure the safety and quality of the product. These regulations cover various aspects of production, including source water protection, processing, labeling, and quality control.

The FDA conducts inspections and enforces compliance with these regulations to verify that bottled water companies meet the necessary standards. Inspections can be scheduled or unannounced, and they help ensure that the bottled water industry adheres to appropriate manufacturing practices and safeguards public health.

By subjecting bottled water to FDA inspections, regardless of the state of sale, the regulatory agency aims to maintain the safety and quality of the product and provide consumers with confidence in the bottled water they purchase.

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False

The statement that bottled water sold within the same state in which it was retrieved is exempt from FDA inspection is false.

What is FDA inspection?

The FDA (Food and Drug Administration) inspection ensures that the organization complies with the federal regulations, laws, and policies. They regulate food, drugs, medical equipment, cosmetics, and other products to ensure the safety of people.

The inspection includes reviewing documents, facilities, procedures, quality control, and testing to confirm that the company complies with all the guidelines and standards set by the government.

The inspection also involves physical inspections of products, food, and facilities. The primary aim of FDA inspection is to protect public health from harm.

Therefore, it is mandatory for all food and beverage products to comply with FDA standards. So, bottled water sold within the same state in which it was retrieved is not exempt from FDA inspection.

Hence, the given statement is false.

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The alpha decay of the isotope of the element produces lead-206 is the polonium (Po)- 210.

Alpha decay is the process, the alpha particles is the emitted when the heavier nuclei decays into the lighter nuclei. Then the  alpha particle released has the charge of the +2 units.

The representation of the alpha decay is as :

\(X^{A}{z} }\) --->  Y⁴₂  +  α⁴₂

Y⁴₂  = Pb²⁰⁶₈₂

Z - 2 = 82

Z = 84

A - 4 = 206

A = 210

The atomic mass, A = 210

The atomic number, Z = 84

Therefore, the element is the polonium (Po) that has the atomic number is the 84 and the atomic mass is the 210.

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Answer: Nonpolar Covalent Bond

Explanation: A Nonpolar Covalent Bond is created when atoms share their electrons equally. This usually occurs when two atoms have similar or the same electron affinity. The closer the values of their electron affinity, the stronger the attraction. This occurs in gas molecules; also known as diatomic elements.

The mass (in grams) of nitric oxide, NO produced by the reaction of 4.79 g of oxygen gas, O₂ is 3.59 g

The mass of nitric oxide, NO produced by the reaction of 4.79 g of oxygen gas, O₂ can be obtained as follow:

4NH₃ + 5O₂ -> 4NO + 6H₂O

From the balanced equation above,

160 g of O₂ reacted to produce 120 g of NO

Therefore,

4.79 g of O₂ will react to produce = (4.79 × 120) / 160 = 3.59 g of NO

Thus, the mass of nitric oxide, NO produced is 3.59 g

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If the current moon phase is full moon, then 14 days later the moon phase would be a new moon. This is because the lunar cycle lasts approximately 29.5 days, and half of that is 14.75 days, which rounds down to 14 days.

After a full moon, the moon goes through its waning phases and eventually becomes a new moon.

A first-quarter moon is so named because it has completed one-quarter of its lunar cycle, which lasts around 29.5 days. The right side of the moon is lighted during this phase, giving it the appearance of a "D" shape.

The moon will transition to its next phase, known as "waning gibbous," around 7 days later. The moon is now partially illuminated, but as it approaches the "full moon" phase, it becomes less illuminated.

It is significant to note that due to the intricate connections between Earth's orbit around the sun and the moon's orbit around the planet, the precise time of the various lunar phases might change somewhat from month to month.

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Answer:

14. C ,  15. C. 16. B , 17. D They are all right

Explanation:

Answer:

Plate tectonics...Plate comes first

Tectonic Plates... Tectonic comes first...

Answer:

plate tectonics is a scientific theory that describes the large-scale motion of Earth's lithosphere

tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust

Explanation:

Answer:

The proof was in the new compound he had made. That orange-yellow solid was subsequently identified in laboratory studies as xenon hexafluoroplatinate (XePtF6), the world's first noble gas compound.

The final electron acceptor in aerobic respiration is oxygen (O2).The electron transport chain (ETC) in cellular respiration relies on a final electron acceptor to help oxygen get reduced into water. This is why oxygen is considered the final electron acceptor in cellular respiration.

During cellular respiration, glucose is broken down into pyruvate. Pyruvate is then transformed into acetyl CoA and enters the citric acid cycle, where it is oxidized and generates ATP, NADH, and FADH2. The final stage of aerobic respiration involves the electron transport chain, in which electrons from NADH and FADH2 are passed through a series of proteins and coenzymes in the inner mitochondrial membrane, ultimately reducing oxygen to form water.

This process is known as oxidative phosphorylation.In conclusion, the final electron acceptor in aerobic respiration is oxygen (O2), and carbon dioxide is generated in the link reaction (pyruvate oxidation) and the citric acid cycle.

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Answer:

There is nothing to answer lol

Answer:

mixture

Explanation:

if u put sand in to a glass of water it is considered to be a mixture.

We would expect the extent of overlap of the bonding atomic orbitals to increase in the series IF < ICl < IBr < I2, leading to progressively stronger and more stable bonds between the iodine atom and the halogen atom.

In the series IF, ICl, IBr, and I2, we are dealing with molecules composed of iodine (I) and a halogen atom, where the size of the halogen atom increases as we go from F to Cl to Br to I.

The extent of overlap of the bonding atomic orbitals depends on the size and shape of the orbitals involved. In general, as the size of the halogen atom increases, the atomic orbitals involved in bonding will become larger and more diffuse. This means that there will be more overlap between the orbitals, resulting in stronger and more stable bonds.

Additionally, as the size of the halogen atom increases, the electronegativity of the atom decreases. This means that the bonding electrons will be less strongly attracted to the halogen atom and more strongly attracted to the central iodine atom. This effect will also contribute to stronger and more stable bonds.

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the longest highlighted bond is the C=O chemical bond in acetone, the shortest highlighted bond is the C-H bond in methane, and the highlighted bond that requires the highest energy to break is the C=O bond in acetone, while the highlighted bond that requires the lowest energy to break is the C-H bond in methane. The remaining bonds fall in between these two extremes.

In order to determine the length and energy of the highlighted bonds, we need to first identify the type of bond present in each molecule. The highlighted bonds in the given molecules are:
1. C-C bond in ethane (CH3CH3)
2. C-O bond in methanol (CH3OH)
3. C=N bond in acetonitrile (CH3CN)
4. C=O bond in acetone (CH3COCH3)
5. C-H bond in methane (CH4)
The type of chemical bond present in each molecule is a covalent bond, where two atoms share electrons in order to complete their outer shells.
Now, we can determine the length of the highlighted bond by looking at the size of the atoms involved. The larger the atoms, the longer the bond. Based on this, we can arrange the highlighted bonds in order of increasing length as follows:
C-H < C-C < C=N < C-O < C=O
Next, we can determine the energy of the highlighted bond by looking at the strength of the bond. The stronger the bond, the higher the energy required to break it. Based on this, we can arrange the highlighted bonds in order of increasing energy as follows:
C-H < C-C < C-O < C=N < C=O
Therefore, the longest highlighted bond is the C=O bond in acetone, the shortest highlighted bond is the C-H bond in methane, and the highlighted bond that requires the highest energy to break is the C=O bond in acetone, while the highlighted bond that requires the lowest energy to break is the C-H bond in methane. The remaining bonds fall in between these two extremes.

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Answer:

a force is push or pull that act on object as a result of object interaction its surrounding.

Explanation:

Answer:

14 g of N2

Explanation:

If we look at the options, we will notice that the correct answer needs to be a gas that has about half of the molecular mass of the gas.

If we consider nitrogen gas whose molecular mass is 28g/mol, half of the molecular mass is 14 g.

So;

28g of N2 contains 6.02 × 10^23 molecules of N2

14g of N2 contains 14 × 6.02 × 10^23 /28

= 3.0 x 10^23

The kinetic energy is 0.5177 × 10⁻²¹ J more at 50°C compared to 25°C.

The average kinetic energy of a molecule is directly proportional to the absolute temperature of a gas.

KE = ( 3/2 ) ( R / Nₐ ) T

Where T is the temperature of the molecule, R is the gas constant, and Nₐ is Avogadro's number.

Now, R = 8.314 J/mol.K

Avogadro's number, Nₐ = 6.022 × 10²³ atoms/ mol

The average kinetic energy at 50° C is:

T = 50° C = 323 K

KE₁ = ( 3/2 ) × ( R / Nₐ ) × T₁

KE₁ = ( 3 × 8.314 × 323 ) / ( 2 × 6.022 × 10²³ )

KE₁ = 668.90 × 10⁻²³ J

KE₁ = 6.6890 × 10⁻²¹ J

The average kinetic energy at 25°C is:

KE₂ = ( 3/2 ) × ( R / Nₐ ) × T₂

KE₂ = ( 3 × 8.314 × 298 ) / ( 2 × 6.022 × 10²³ )

KE₂ = 617.13 × 10⁻²³ J

KE₂ = 6.1713 × 10⁻²¹ J

Now,

The average kinetic energy of the molecules at 50° C compared to 25° C is:

KE = KE₁ - KE₂

KE = 6.6890 × 10⁻²¹ - 6.1713 × 10⁻²¹

KE = 0.5177 × 10⁻²¹ J

Hence, the average kinetic energy is 0.5177 × 10⁻²¹ J more at 50° C compared to 25° C.

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