If 30 g of a drug is dissolved in 150 mL of a solvent having a specific gravity of 1.40, what is the percentage strength (%w/w) of the drug solution?

Answer:

Solid- the particles are packed closely together and barely moves if at all.

Liquid- the particles are packed loosely together and move slowly.

Gas- The particles are very far apart and move very fast.

If you need any additional information i am happy to provide some! I hope you have a good day!! Be tiger fierce!! :)

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

The  heat that released when 3.00 L of 0.400 m Al(OH)₃ is mixed with 2.00 L of 0.700 m H₂SO₄ is 18.8 kJ.

The balanced equation for the reaction between aluminum hydroxide and sulfuric acid is:

Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O

The molarity of aluminum hydroxide and sulfuric acid are 0.400 M and 0.700 M, respectively. The volume of the aluminum hydroxide and sulfuric acid are 3.00 L and 2.00 L, respectively.

To determine the amount of heat released, we need to determine the limiting reactant. We'll compare the amount of aluminum hydroxide to the amount of sulfuric acid.

Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O

Moles of Al(OH)₃ = molarity × volume

= 0.400 mol/L × 3.00 L

= 1.20 mol

Moles of H₂SO₄ = molarity × volume

= 0.700 mol/L × 2.00 L

= 1.40 mol

The stoichiometric ratio between Al(OH)₃ and H₂SO₄ is 1:3. Since there are only 1.20 mol of Al(OH)₃ and 1.40 mol of H₂SO₄, aluminum hydroxide is the limiting reactant.

The amount of heat released is determined using the heat of reaction and the limiting reactant.

ΔHrxn = -15.7 kJ/molAl(OH)₃

Since 1 mol of Al(OH)₃ produces 1/3 mol of H₂SO₄, the amount of H₂SO₄ reacted is 1.20 mol × (1/3) = 0.40 mol.

The amount of heat released isq = ΔHrxn × molAl(OH)₃

= -15.7 kJ/mol × 1.20 mol

= -18.8 kJ

Therefore, when 3.00 L of 0.400 M Al(OH)₃ is mixed with 2.00 L of 0.700 M H₂SO₄, 18.8 kJ of heat is released.

Learn more about heat: https://brainly.com/question/29328430

#SPJ11

Answer:

5.4g

Explanation:

Answer:

Gravity exists because elementary particles (electrons, quarks, and neutrinos), are NOT static with time and expansion. Matter is dynamic; elementary particles must continually accrete energy (the quanta of space) in order to conserve the continually increasing angular momentum of the expanding universe.

Strength of gravity

9.80665 m/s 2

Jupiter

An aqueous potassium carbonate solution is made by dissolving 6.29 moles of K₂CO₃ in sufficient water so that the final volume of the solution is 4.20L. The molarity of a solution is 1.50M.

Molarity is defined as the moles of solute present in the specific amount or volume of a solution. We calculate the moles of a substance using the formula

moles=(mass/molar mass)

If the volume of a solution is given in ml, then convert it into L.

Molarity is calculated as

Molarity=moles/volume(in L)

Given that moles=6.29, and volume=4.20L

Plug both values in the formula

Molarity=(6.29 mol/4.20 L)

Molarity=1.4976 mol/L

Molarity=1.50 M (∵M=mol/L)

Therefore, the molarity of a K₂CO₃ solution is 1.50M.

To know more about molarity

https://brainly.com/question/29350560

#SPJ4

According to the given statement, there are 1.612 moles in 100 grams of NO3.

To determine the number of moles in 100 grams of NO3, we first need to know the molar mass of NO3. The molar mass of NO3, which stands for nitrate, is 62.0049 g/mol.
Now we can use the following formula to calculate the number of moles in 100 grams of NO3:
moles = mass / molar mass
moles = 100 g / 62.0049 g/mol
moles = 1.612 mol
Moles are a fundamental unit of measurement in chemistry used to express the amount of a substance. They represent a specific number of atoms, ions, or molecules, which is the Avogadro constant, 6.022 x 10^23. Moles are calculated by dividing the mass of the substance by its molar mass. This allows for a more accurate comparison of different substances in chemical reactions, as it provides a common unit for measuring the amount of each reactant involved.
In the case of NO3, which is nitrate, we can use the number of moles to determine the quantity of the substance needed to react with another substance. This is important in determining the stoichiometry of a reaction, which is the relationship between the reactants and products in a chemical equation. By knowing the number of moles, chemists can accurately predict the products formed in a reaction and calculate the amount of reactant needed for a specific yield.

To know more about NO3 visit:

brainly.com/question/29299771

#SPJ11

Answer:

electricity

Explanation:

or maybe food

Charles’ Law

V₁/T₁=V₂/T₂

78.5/318.15=V₂/273.15

V₂=67.4 ml

The main difference between substrate level phosphorylation and oxidative phosphorylation is that substrate level phosphorylation is a direct phosphorylation of ADP with a phosphate group by using the energy obtained from a coupled reaction whereas oxidative phosphorylation is the production of ATP from the oxidized ...

You will need 1.72 ml of the original acid to obtain 75.0 ml of the new solution.

C1V1 = C2V2
where C1 is the concentration of the original solution, V1 is the volume of the original solution needed, C2 is the concentration of the diluted solution, and V2 is the volume of the diluted solution needed.
In this case, we know that:
C1 = 12.0 m
C2 = 0.275 m
V2 = 75.0 ml
We can rearrange the formula to solve for V1:
V1 = (C2V2) / C1
Substituting the values we know, we get:
V1 = (0.275 m x 75.0 ml) / 12.0 m
Simplifying, we get:
V1 = 1.72 ml

Hence, , you will need 1.72 ml of the original acid to obtain 75.0 ml of the new solution.

learn more about acid  click here:

https://brainly.com/question/25148363

#SPJ11

Answer: I don’t know lol

Explanation:  I am so sorry I thought this was easy

Answer:

Ant.

Explanation:

The dog would be the most frantic, when all are compared at an equal speed of 30 mph. An ant of such strength, has six jointed legs and has an exoskeleton. An Ant of such size(mass) and weight would have take off with better traction too(6 legs). So the Ant would have the greatest kinetic energy. Also it would take turns while fleeing from the wildfire, while running at almost 30 mph while the other animals wouldn't come that close.

It is technically and literally illogical to say an ant can do 30 mph in its regular size.

Dont believe me? Watch ants scurrying away when threatened and taking turns and U-turns. Six legs offer more energy while fleeing by instinct. Literally six legs at 30 mph. Crazy!

Answer: The answer is B. The pressure inside the tires increased.

Explanation:

The relationship between the pressure, volume, and temperature of a gas is described by the ideal gas law, which is usually written as:

\($$PV = nRT$$\)

where:

- \(\(P\)\) is the pressure,

- \(\(V\)\) is the volume,

- \(\(n\)\) is the number of moles of gas,

- \(\(R\)\) is the ideal gas constant, and

- \(\(T\)\) is the temperature (in Kelvin).

In this case, the volume \(\(V\)\) and the number of moles \(\(n\)\) of air in the tires stay the same. The temperature \(\(T\)\) is increasing. Therefore, for the equation to remain balanced, the pressure \(\(P\)\) must also increase.

So, the answer is B. The pressure inside the tires increased.

The pressure of the NH3 gas is 2.19 atm, a sample of 4.30 moles of NH3 gas occupies 6.50 L at 45°C.

Gas pressure is the force per unit area exerted by a gas on the walls of its container. It is a measure of the number of gas molecules colliding with the container's walls per unit of time, and is proportional to the number of gas molecules and their kinetic energy. It is a result of the gas molecules moving randomly in all directions and colliding with the walls of the container. When a gas is confined in a container, its pressure is exerted equally in all directions. The pressure is a scalar quantity, which means it has only magnitude and does not have a direction.

Gas pressure can be measured in a variety of units, including atmospheres (atm), torr, pascals (Pa), and pounds per square inch (psi). The most commonly used units for measuring gas pressure are atmospheres and pascals.

To calculate the pressure of a gas, the Ideal Gas Law is used which states that \(PV = nRT\), where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First step:  Convert the temperature from Celsius to Kelvin:

45°C + 273.15 = 318.15 \(K\)

Second step:Plug in the values and solve for P:

\(P = (nRT) / V\)

\(P = (4.30 moles * 0.0821 Latm/molK * 318.15 K) / 6.50 L\)

\(P = 2.19 atm\)

So, the pressure of the \(NH3\) gas is 2.19 \(atm\).

To know more about  Gas Presurre, visit:

https://brainly.com/question/24719118

#SPJ1

Answer:

337 °C

Explanation:

From the question given above, the following data were obtained:

Initial volume (V1) = 5.20 L

Initial pressure (P1) = 1.20 atm

Initial temperature (T1) = 32 °C

Final pressure (P2) = 6 atm

Final volume (V2) = 2.08 L

Final temperature (T2) =?

Next, we shall convert 32 °C to Kelvin temperature. This can be obtained as follow:

T (K) = T (°C) + 273

Initial temperature (T1) = 32 °C

Initial temperature (T1) = 32 °C + 273

Initial temperature (T1) = 307 K

Next, we shall determine the final temperature of the gas as illustrated below:

Initial volume (V1) = 5.20 L

Initial pressure (P1) = 1.20 atm

Initial temperature (T1) = 305 K

Final pressure (P2) = 6 atm

Final volume (V2) = 2.08 L

Final temperature (T2) =?

P1V1 /T1 = P2V2 /T2

1.2 × 5.2 / 305 = 6 × 2.08 / T2

Cross multiply

1.2 × 5.2 × T2 = 305 × 6 × 2.08

6.24 × T2 = 3806.7

Divide both side by 6.24

T2 = 3806.7 / 6.24

T2 = 610 K

Finally, we shall convert 610 K to celsius temperature. This can be obtained as follow:

T (°C) = T(K) – 273

T(K) = 610 K

T (°C) = 610 – 273

T (°C) = 337 °C

Thus, the final temperature of the gas is 337 °C.

Answer:

The same number of molecules, 6.0 × 10²³ molecules.

Explanation:

The amount of any given gas that can be stored in a container depends on the temperature, pressure and volume of the container. It does not depend on the nature (or identity) of the gas.

So if a 10-liter flask contains 6.0 × 10²³ molecules of hydrogen gas, it will contain the same amount of molecules of any other gas when temperature and pressure remain constant.

It is the charterer's duty to hire a ship for a certain period of time to transport cargo or passengers.

The charterer's job is to hire a ship for a set amount of time to transport goods or people. They are in charge of negotiating the charter conditions with the vessel owner or broker, setting up the required licences and paperwork, and ensuring the timely and safe delivery of cargo or passengers. Broker: The broker's job is to make it easier for the charterer and the vessel owner to come to an agreement. They serve as middlemen, using their connections and market expertise to identify suitable vessels and agree upon conditions of charter that are acceptable to both sides. A appropriate vessel must be provided by the vessel owner in order to satisfy the charterer's needs. They keep the vessel seaworthy, adhere to pertinent laws, and guarantee effective operations throughout the charter.

To know more about charter, here:

https://brainly.com/question/27998149

#SPJ4

Answer:

2.688 L

Explanation:

Here we use the formula:

(P1 x V1)/T1  =  (P2 x V2)/T2

where;

P1 = 417 mm of Hg

P2 = 576 mm of Hg

V1 = 4.78 L

V2 = X L

T1 = 497 K

T2 = 386 K

substituting the values in the formula:

(417 x 4.78)/497 = (576 x X)/386

1993.26/497  = 576X/386

(4.01058 x 386)/576 = X

2.688 L = X

The  new volume of the cylinder when pressure increases to 576 mm Hg

and temperature decreases to 386 K is 2.688 liters.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.

Here we use the formula:

(P₁x V₁)/T₁ =  (P₂ x V₂)/T₂

where;P₁ = 417 mm of Hg,P₂ = 576 mm of Hg,V₁= 4.78 L,V₂= X L,T₁ = 497 K,T₂ = 386 K

substituting the values in the formula:

(417 x 4.78)/497 = (576 x X)/386

1993.26/497  = 576 X/386

(4.01058 x 386)/576 = X

2.688 L = X

Learn more about pressure,here:

https://brainly.com/question/18431008

#SPJ2

Answer:

the number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge

Explanation:

Hi, If your New to brainly.com Welcome!! I Hope you enjoy your Experince!

If you have Anymore Questions Please Message Me! :)

This character possesses unique traits and abilities that align with your personality and characteristics, making you a perfect match for that specific Crystal Gem.

Each Crystal Gem possesses distinct qualities and powers. By answering a series of questions about your preferences, traits, and behaviors, the quiz generates a result that matches you with a particular Crystal Gem. For example, if you are identified as Garnet, it means you share Garnet's strong and stoic nature, as well as her ability to see into the future. If you are identified as Amethyst, you may share her playful and spontaneous personality, along with her shapeshifting abilities. If you are identified as Pearl, you may exhibit Pearl's intellect, grace, and proficiency with swords. The result of the quiz is determined by an algorithm that assigns certain character traits and responses to each Crystal Gem. Based on your answers, the algorithm calculates the best match for you. It is a fun and entertaining way to connect with the beloved characters of Steven Universe and explore which Crystal Gem resonates with your personality.

Learn more about Garnet here: brainly.com/question/28883904

#SPJ11

Answer:8

842.46 or to the next whole number

Explanation:

just multiply the mass of iron with the volume mL you have.

The mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

The product of density and volume of a substance represents its mass. Mathematically -

M = V x ρ

where -

ρ - density

M - mass

V - volume

Given is iron in liquid form. It occupies a total volume of 111 ml.

The mass of liquid iron can be calculated using -

M = V x ρ

Volume of iron [V] = 111 ml = 111 cm³.

Density of iron [ρ] = 7.847 g/cm³

Therefore, we can write -

M = 7.847 x 111

M = 871.01 grams

Therefore, the mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

To solve more questions on Mass - Density relation, visit the link below-

brainly.com/question/28348989

#SPJ2

The mass of thallium formed by the passage of 7,514 amps for 4.52 hours through the electrolytic cell is 225.1 g.

To answer this question, we need to use Faraday's law of electrolysis, which states that the mass of a substance formed at an electrode during electrolysis is directly proportional to the total charge passed through the cell and the molar mass of the substance.

The total charge passed through the cell can be calculated as follows:

total charge = current x time = 7,514 amps x 4.52 hours x 3600 seconds/hour = 1.09 x \(10^8\) C

The molar mass of thallium is 204.38 g/mol. Using Faraday's law, we can calculate the mass of thallium formed as:

mass of Tl = (total charge / Faraday's constant) x (1 mol Tl / 1 Faraday) x (204.38 g Tl / 1 mol Tl)

where Faraday's constant is 96,485 C/mol.

Substituting the values, we get:

mass of Tl = (1.09 x \(10^8\) C / 96,485 C/mol) x (1 mol Tl / 1 Faraday) x (204.38 g Tl / 1 mol Tl)

mass of Tl = 225.1 g

Learn more about electrolytic cell here:

https://brainly.com/question/4030224

#SPJ11

The mass of the iodine is 254 g.

The number of moles of the iodine = 2 mol

The molar mass of the iodine = 127 g/mol

The number of moles is expressed as :

The number of moles = mass / molar mass

The mass of the iodine = moles ×  molar mass

Where,

The number of moles = 2 mol

The molar mass = 127 g/mol

The mass = ?

The mass of the iodine is as :

The mass of iodine = moles ×  molar mass

The mass of the iodine = 2 × 127

The mass of the iodine = 254 g

The mass of the iodine is 254 g with the number of moles is 2 mol and the atomic mass is 127 g/mol.

To learn more about moles here

https://brainly.com/question/31597231

#SPJ1

This question is incomplete, the complete question is :

How we obtain the mass iodine, if the moles of the iodine is 2 mol.

Answer

Balanced equation: Fe₂O₃ + 3H₂ → 2Fe + 3H₂O

The grams of iron produced = 335.07 grams

Explanation

Given:

The unbalanced equation is: Fe₂O₃ + H₂ → Fe + H₂O

The moles of hydrogen gas that reacted = 9 moles.

What to find:

The balanced question and the mass in grams of iron produced.

Solution

Step 1: Balance the equation.

The equation can be balanced by adding 3 as the coefficient of H₂ on the reactant side and 2 and 3 as the coefficients of Fe and H₂O respectively.

Fe₂O₃ + 3H₂ → 2Fe + 3H₂O

Step 2: Determine the moles of Fe produced.

Using the mole ratio of H₂ and Fe in the balanced equation in step 1 and the given moles of H₂ that reacted; then the moles of Fe produced is

Step 3: Covert the 6 moles of Fe produced in step 2 to grams.

From the periodic table; the molar mass of Fe = 55.845 g/mol.

So, using the mole formula, the mass of Fe produced is

Therefore, the grams of iron that will be produced from 9 moles of hydrogen gas is 335.07 grams

Answer:

people as: it Is less expensive. easy to carry

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer:

Sodium oxide is the product

Explanation:

4Na+O2->2Na2O

Answer:

Cu

Explanation:

because it is 39.814% of CuSO4

Magnesium is useful as a structural element in frames for a wide range of products, including cell phones and airplanes, due to its advantageous properties such as its low density, high strength-to-weight ratio, excellent vibration damping characteristics, and good machinability.

Low density: Magnesium is one of the lightest structural metals, making it an attractive choice for weight-sensitive applications. Its density is about one-fourth that of steel and two-thirds that of aluminum, resulting in significant weight savings.

High strength-to-weight ratio: Despite its low density, magnesium exhibits good strength and stiffness. It has a high strength-to-weight ratio, meaning it can withstand high loads while being lightweight. This property is crucial for applications where weight reduction is essential without compromising structural integrity.

Vibration damping: Magnesium has exceptional vibration damping capabilities, meaning it can absorb and dissipate energy from vibrations and shocks. This characteristic is crucial for devices such as cell phones, where minimizing vibrations can enhance user experience and prevent component failure.

Good machinability: Magnesium is relatively easy to machine, allowing for complex and precise manufacturing of structural components. Its machinability facilitates the production of intricate designs and reduces manufacturing costs.

The combination of low density, high strength-to-weight ratio, vibration damping capabilities, and good machinability makes magnesium an excellent choice for structural frames in a wide range of products. Its use in cell phones and airplanes, among other applications, helps to reduce weight, improve performance, and enhance overall user experience.

To know more about magnesium  visit:

https://brainly.in/question/2076443

#SPJ11