Match each of the following terms to its correct definition.

Question 14 options:

Generic name


Brand name


Chemical name

1.
The long scientific name that represents is molecular structure

2.
The nonproprietary name of the drug that isn’t protected by patent or trademark

3.
The name given to an FDA-approved drug by the pharmaceutical manufacturer that holds proprietary ownership, or patent, of the drug

To obtain salt from a mixture of salt and sand, the mixture is filtered, then dissolved in water, and finally, water is made to evaporate leaving the sand. So, option C is the correct answer.

Sand and salt mixture consists of soluble and insoluble components. Salt is soluble in water while sand is not. The sand from this mixture can be separated using filtration, a method of filtering insoluble components from a solvent, typically using filter paper or various mediums in an industrial process. This way sand is separated from the mixture.

However, there will be minute particles that may not be filtered but are mostly insoluble. So, the mixture is mixed in water where salt dissolves leaving the other impurities that are insoluble.

The salt water is then heated so that water evaporates leaving only the salt behind. In this way, only salt is obtained.

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Answer:

moles MgCl₂ = 5.97 moles

Explanation:

First, let0s write the overall reaction that is taking place here:

Mg(OH)₂ + HCl ----------> MgCl₂ + H₂O

Now, we need to balance this reaction:

Mg(OH)₂ + 2HCl ----------> MgCl₂ + 2H₂O

Now, the exercise already stated that the HCl is in excess, so we can assume the magnesium hydroxide is the limiting reactant. If this is true, then, to get the moles of MgCl₂ produced, all we need to do is calculate the moles of Mg(OH)₂ that reacted, using the following expression:

moles = mass / MM

The atomic weights for Mg, O and H are:

Mg: 24.305 g/mol;  H: 1 g/mol;  O = 15.999 g/mol

Let's determine the molar mass of Mg(OH)₂:

MM = 24.305 + (2 * 15.999) + (2 * 1) = 58.303 g/mol

Now, let's determine the moles:

moles = 348 g / 58.303 g/mol = 5.97 moles of Mg(OH)₂

As we can see in the overall reaction, there is a mole ration between Mg(OH)₂ and MgCl₂ of 1:1, that's why we can conclude that the moles of Mg(OH)₂ would be the same moles of MgCl₂:

Hope this helps

There are 5.78 × 10^20 sulfide ions in sodium sulfide

The formula of the compound is Na2S. The molar mass of the compound is calculated as follows; 2(23) +32 = 46 + 32 = 78 g/mol

Number of moles of Na2S = 0.15 g/ 78 g/mol = 0.0019 moles

Since there is 1 mole of Na^+ and 2 moles of S^2- in Na2S, the number of S^2- ions in  0.19 moles of Na2S is 0.00096 moles of S^2-.

If 1 mole of S^2- contains 6.02  × 10^23

0.095 moles of S^2- contains 0.00096 moles × 6.02  × 10^23/ 1 mole

= 5.78 × 10^20 sulfide ions

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The force of repulsion between the positive charges has a magnitude of 230 N. Option B

We know that the Coulomb's law deals with the way that two charges are able to interact. The interaction between the two charges could be such that the charges are attracted to each other or the charges are repelled from each other.

The forces of attraction and repulsion are the bases of the Coulomb's law. According to the Coulomb's law, the forces of attraction or repulsion between two charges would depend on the product of the magnitudes of the charges and inversely proportional to the distance that separates the charges.

Hence;

F = K\(q_{1}\)\(q_{2}\)/r^2

F = Coulomb's force

\(q_{1}\)and \(q_{2}\) = magnitude of the charges

r = distance of separation

Then;

F =  8.99 × 10^9 * (1.6 × 10^−19)^2/(1 * 10^-16)^2

F = 2.3 * 10^3 N

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The balanced equations are Cd (g) + S\(_8\) (g) → CdS (g), K\(_2\)CO\(_3\) → K\(_2\)O + CO\(_2\). and a Na +  HOH → NaOH + H\(_2\). Cd (g) + S\(_8\) (g) → CdS (g) is combination reaction.

An equation per a chemical reaction is said to be balanced if both the reactants plus the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides between the reaction have an equal balance of mass and charge. The balanced equations are Cd (g) + S\(_8\) (g) → CdS (g), K\(_2\)CO\(_3\) → K\(_2\)O + CO\(_2\). and a Na +  HOH → NaOH + H\(_2\).

Cd (g) + S\(_8\) (g) → CdS (g) = combination reaction

K\(_2\)CO\(_3\) → K\(_2\)O + CO\(_2\)  = decomposition reaction

Na +  HOH → NaOH + H\(_2\) = Hydration reaction

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Answer: Go back in the Lesson sorry i dont know

Explanation: Well I would X,-,=,+ or Divied but what you mean

0.25 Molarity of lead nitrate aqueous solution is there when a solution of nacl is added slowly to  a solution of lead nitrate.

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While isobaric heat can be measured by using the coffee cup calorimeter, Bomb calorimetry is the device that would be needed to measure the reaction heat under isochoric condition.

A thermodynamic process known as an isochoric process occurs when the closed system's volume maintains consistent (V = const). It explains the non-deformable behaviour of the gas inside the container.

Heat transmission from one location to another of the system only modifies the internal energy of the system (the temperature) because the volume stays constant. While isobaric heat can be measured by using the coffee cup calorimeter, Bomb calorimetry is the device that would be needed to measure the reaction heat under isochoric condition.

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The temperature at which a solid transforms into a liquid at atmospheric pressure is referred to as the liquid’s melting point.

The fact that water boils at a greater temperature than fluorine makes option C the correct choice. The melting point of water is zero degrees Celsius (32 degrees F). Depending on the atmospheric pressure, different amounts of water will boil at different temperatures. When purified water reaches its boiling point at sea level, it does so at 212 degrees Fahrenheit (100 degrees Celsius).

Compared to fluorine, water has a greater boiling point. Regarding the melting and boiling points of water and fluorine molecules, this statement is accurate.

The temperature at which a substance's solid and liquid phases are in equilibrium is known as its melting point. A temperature at which a substance's vapour pressure reaches its boiling point.

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Statement C; They are 0°F and 100°F, respectively, correctly describes the melting and boiling points of water. But Instead of F it should be degree Celsius.

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1.827 × 10²⁴ molecules H₂S

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Compounds

Atomic Structure

Step 1: Define

103.4 g H₂S (Sulfuric Acid)

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of H₂S - 2(1.01) + 32.07 = 34.09 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

1.82656 × 10²⁴ molecules H₂S ≈ 1.827 × 10²⁴ molecules H₂S

Answer:

I think the answer is c!

Explanation:

Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. hope this helps you!

Answer:

0.3025 moles of CO₂  are produced

Explanation:

Reaction is: Na₂CO₃ (aq) + 2 HF (aq) → H₂O (l) + CO₂ (g) + 2 NaF (aq)

It is correctly ballanced.

If the given information stays that the excess amount is on the sodium carbonate, the HF is the limiting reagent.

We see that stoichiometry is 2:1. Moles of produced CO2, will be the half, than the original amount, we have.

Firste step: We convert the mass to moles

12.1 g . 1mol / 20g = 0.605 moles of HF

2 moles of HF can produce 1 mol of CO₂

0.605 moles of HF will produce (0.605 . 1) /2 = 0.3025 moles of CO₂

Answer:

B

Explanation:

B is a personal factor of resilience

Answer:

number 3

Explanation:

In isotopes the number of protons and electrons is always the same since they are isotopes of the same element. If the number of protons in atom "a" is different than in atom "b" then these are 2 different elements.

Isotopes have the same number of electrons and protons but a different number if neutrons.

In the simile "Ben swallowed the sandwiches like a snake," the two things being compared are Ben (the subject of the sentence) and a snake.

The important qualities of a snake in this metaphor are its swallowing behavior and the speed at which it devours its prey.

A metaphor is a figure of speech that makes a comparison between two unrelated things, objects, or concepts, highlighting a similarity between them. Unlike similes, which use words such as "like" or "as" to make a direct comparison, metaphors state that one thing is another.

Snakes are known for their ability to consume their prey whole and quickly, using their flexible jaws and swallowing mechanism.

Therefore, the important quality of the snake in the metaphor is swallowing.

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Complete question:

Answer the questions about this simile: "Ben swallowed the sandwiches like a snake."

What two things are being compared?

What are the important qualities of a snake in this metaphor?

Answer:

The Cell Wall

Explanation:

It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.

A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.

Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.

The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.

The strength of the bond is in the following order: H.....F > H.....O > H......N

The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.

Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.

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Answer:uses world like

Explanation:

Answer:

the answer is a          shh /..\  yall smell that

Explanation:

Answer:

that the poem needs to be finished heh pog

Explanation:

Answer:

Where is the poem?

Explanation:

The number of mole of lithium, Li needed for the reaction is 3.2 moles (Option D)

4Li + N₂(g) → 2Li₂N

From the balanced equation above,

2 moles of Li₂N were obtained from 4 moles of Li

From the balanced equation above,

2 moles of Li₂N were obtained from 4 moles of Li

Therefore,

1.6 moles of Li₂N will be obtained from = (1.6 × 4) / 2 = 3.2 moles of Li

Thus, 3.2 moles of Li are needed for the reaction

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The given question is incomplete. The complete question is:

Gallium (Ga, 69.723 g/mol) is a metalloid obtained from its salts during the smelting of ores of other elements, like Zinc. has broad applicability in the electronics industry. It is also used as a safe replacement for mercury in thermometers as it melts at 29.8 °C and has a heat of fusion of 5.59 kJ/mol. What is the entropy change of 22 g of gallium in J/K as it melts when placed on a surface at 29.8°C?

Answer: The entropy change of of gallium in as it melts when placed on a surface at  is 5.81 J/K

Explanation:

Latent heat of fusion is the amount of heat required to convert 1 mole of solid to liquid at atmospheric pressure.

Amount of heat required to melt 1 mole of Ga = 5.59 kJ

Mass of Ga given = 22 gram

Heat required to melt 69.723 g of Ga = 5.59 kJ

Thus Heat required to melt 22 g of Ga = \(\frac{5.59kJ}{69.723}\times 22=1.76kJ\)

Temperature = \(29.8^0C=(273+29.8)kJ=302.8kJ\)

Now entropy change = \(\frac{\text {heat of fusion}}{\text {temperature in K}}=\frac{1.76kJ}{302.8K}=0.00581kJ/mol=5.81J/K\)

Thus the entropy change of of gallium in as it melts when placed on a surface at \(29.8^0C\) is 5.81 J/K

Answer:

Copper Copper Copper Copper

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

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The y axis is concentration since  the amounts of reactants and products remain constant after equilibrium is reached.

In a chemical reaction system, equilibrium is said to be attained when the rate of forward reaction and the rate of reverse reaction are equal. This is indicated by the straight line.

Therefore, the correct label for the y axis is concentration, because the amounts of reactants and products remain constant after equilibrium is reached.

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What best explains the label that the student should use on the y-axis?

D. Concentration as the concentrations of reactants and products remain constant after equilibrium is reached

Based on the information provided, the shared derived characteristic that frogs and pigeons have is "Jaws."

Frogs and pigeons both belong to the vertebrate group and possess jaws. Jaws are bony structures that are essential for feeding and play a crucial role in the process of digestion. Frogs have well-developed jaws that allow them to catch and consume prey, while pigeons have a beak that serves as their modified jaw structure.

The branching tree diagram indicates that frogs and pigeons branch off at different points, suggesting that they have evolved independently from a common ancestor.

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The mass of NaHCO₃ needed to generate 0.261 mole of CO₂ is 21.93 grams

First, we shall obtain the number of mole of NaHCO₃ that reacted. Details below:

NaHCO₃ + HCl -> NaCl + H₂O + CO₂

From the balanced equation above,

1 mole of CO₂ was obtained from 1 mole of NaHCO₃

Therefore,

0.261 mole of CO₂ will also be obtain from 0.261 mole of NaHCO₃

Finally, we shall detemine the mass of NaHCO₃ needed. Details below:

Mole = mass / molar mass

0.261 = Mass of NaHCO₃ / 84.01

Cross multiply

Mass of NaHCO₃ = 0.261 × 84.01

Mass of NaHCO₃ = 21.93 grams

Thus, we can conclude that the mass of NaHCO₃  needed is 21.93 grams

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You may use a hand-lens to help you make this measurement.  A student investigates the vertical oscillations of the mass–spring system.

Depending on the point of view and the unit of time, velocity is the rate at which the direction of an object in motion changes over time. Velocity is a key concept in kinematics, the branch of classical mechanics that analyzes how bodies move.

The physical vector quantity known as velocity's magnitude and direction must be determined. The scalar absolute value (magnitude) of velocity is speed, a coherently derived unit whose quantity is measured in meters per second in the SI (metric system). In contrast to "5 meters per second east," which is a vector, "5 meters per second" is a scalar.

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Answer:

yes

Explanation:

The outermost shell of sodium contain only one electron . Due to incomplete octet (8electron in outermost shell ) sodium atom is unstable. Now the outermost shell of of Na+ contain 8 electron . due to completion of octate , Na+ is more stable

Considering the definition of empirical and molecular formula, if the molecular formula mass of the compound is 60.0 g/mol, the molecular formula is N₂O₂.

The empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms.

The molecular formula is the chemical formula that indicates the number and type of distinct atoms present in the molecule. The molecular formula is the actual number of elements that make up a molecule.

The empirical formula and the molecular formula are generally related in the following way:

Molecular Formula = n× Empirical Formula

where n is n=molecular mass÷ empirical mass

In this case, in first place you need to convert the number of grams given into percentage as follow:

Assuming a 100 grams sample, the percentages match the grams in the sample. So you have:

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

Therefore the N: O mole ratio is 1: 1

Finally, the empirical formula is N₁O₁= NO

The molecular mass is 60.0 g/mol and the empirical mass is 30 g/mole. Then, the value of n is:

n=60 g/mole÷ 30 g/mole

Solving:

n=2

Being the Molecular Formula = n× Empirical Formula, the you can calculate:

Molecular Formula = 2× (NO)

Molecular formula= N₂O₂

Finally, the molecular formula is N₂O₂.

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