calculate the mass in grams for .65 moles of N2

We can infer about the given information of lotion is that pH is slightly acidic in nature.

pH of any solution gives idea about the acidity or basicity of that solution, and it will be calculated as:

pH = -log[H⁺]

pH value in the range of 0 to 6.9 shows acidity, 7 shows the neutral nature and from 7.1 to 14 shows basicity. Given pH value of lotion i.e. 6.25 states that lotion is slightly acidic in nature.

Hence pH value of lotion informs that lotion is slightly acidic.

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Answer:

\(11 \times 6.022 \times {10}^{23} \\ = 66.242\times {10}^{23} \: of \: \\ water \: molecules\)

Answer:

turtles

Explanation:

Turtles eat frogs and no animal in the pond can consume a turtle

The concentration of the H2SO4 solution is 0.080 M.

The concentration of 50.0 ml of a solution of H2SO4 can be found by titrating the acid with a standardized solution of Ba(OH)2. This can be achieved by first preparing a 0.20M solution of Ba(OH)2 by dissolving a known mass of the reagent in distilled water and diluting to the mark. The end point is reached when all the H2SO4 has reacted with Ba(OH)2 and no more acid is left to react with the reagent.When 40.0 ml of 0.20M Ba(OH)2 titrant was added, we can calculate the amount of moles of Ba(OH)2 that reacted with the H2SO4 and use this value to find the concentration of H2SO4. To do this, we can use the following balanced equation:H2SO4 + 2Ba(OH)2 → BaSO4 + 2H2OFrom the balanced equation, we can see that one mole of H2SO4 reacts with two moles of Ba(OH)2. Thus, the number of moles of Ba(OH)2 used in the titration is given by:(40.0/1000) L × (0.20 mol/L) = 0.008 molWe can use the number of moles of Ba(OH)2 used to calculate the number of moles of H2SO4 present in the original solution. Since one mole of H2SO4 reacts with two moles of Ba(OH)2, the number of moles of H2SO4 in the solution is given by:0.008 mol Ba(OH)2 × (1 mol H2SO4 / 2 mol Ba(OH)2) = 0.004 mol H2SO4.The concentration of H2SO4 is then given by dividing the number of moles of H2SO4 by the volume of the solution in liters:0.004 mol / (50.0/1000) L = 0.080 M.

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Answer: NH₃ (aq) + H⁺ (aq) ⇒ NH₄⁺ (aq)

Explanation:

Step 1: Write the balanced equation and include the state, in this case aqueous (aq) as stated in the problem.

NH₃ (aq) + HCl (aq) ⇒ NH₄Cl (aq)

Step 2: Break apart strong electrolytes to form the complete ionic equation.

Ammonia is a weak base so it will not completely break apart in solution. HCl is a strong acid so it will break apart in solution. Ammonium chloride is an ionic compound, so it will break apart too.

NH₃ (aq) + H⁺ (aq) + Cl⁻ (aq) ⇒ NH₄⁺ + Cl⁻ (aq)

Step 3: Remove the spectator ions that are found on both sides of the equation. Cl- (aq) is on both sides of the equation, so it is a spectator ion and can be crossed out.

NH₃ (aq) + H⁺ (aq) + Cl⁻ (aq) ⇒ NH₄⁺ (aq) + Cl⁻ (aq)

NH₃ (aq) + H⁺ (aq) ⇒ NH₄⁺ (aq)

Answer:

Aluminium reusable water bottle Purpose of aluminum: Weighs less by volume than most other metals and comes at an affordable price.

Explanation:

Explanation:

CONGRATULATIONS!!!!!

Answer:

chemistary more lliek dumastry ahaha

Explanation:

An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

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These are the combinations for the original states (solid, liquid, or gas) of the solute and solvent.

What is solute?

The term "solute" refers to a material that has dissolved in a solution. In fluid solutions, there are more solvent molecules than solute molecules. Salinity and water are two excellent examples of solutes in daily life. The solute is salt because it dissolves in water.

What is solvent?

The ingredients that are utilized as solutes in the formulation are dissolved using solvents. Solids, liquids, or gases may make up these solutes. In order to obtain a solution, a suitable solvent is utilized in conjunction with the solute.

Hypotonic, isotonic and hypertonic solutions (tonicity).

Solute-Solvent Combinations.

Gas-Gas Solutions.

Solid-Solid Solutions.

Liquid-Liquid Solutions.

Therefore, these are the combinations for the original states (solid, liquid, or gas) of the solute and solvent.

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Answer:

1)4180j

2)15000kj

Explanation:

\(1) E=100*(30-20)*4.18=4180j\\2)Q=.5*30*1000=15000kj\)

e. The radius of the metal cylinder is 1.27 cm / 2 = 0.635 cm.

f. The volume of the metal cylinder is 4.745 cm³

g. The density of the metal cylinder is 7.53 g/cm³

Data given:

b. Mass of metal cylinder: 35.732 g

c. Length of metal cylinder: 3.15 cm

d. Diameter of metal cylinder: 1.27 cm

e. Radius of metal cylinder: The radius (r) of a cylinder is half of its diameter. Therefore, the radius of the metal cylinder is 1.27 cm / 2 = 0.635 cm.

To calculate the volume (V) of the metal cylinder;

V = πr²h, where π is approximately 3.14159, r is the radius, and h is the height (length) of the cylinder.

Volume of metal cylinder:

V = 3.14159 * (0.635 cm)² * 3.15 cm = 4.745 cm³

Density of metal cylinder:

Density (ρ) is defined as mass (m) divided by volume (V). Therefore, the density of the metal cylinder is ρ = 35.732 g / 4.745 cm³ = 7.53 g/cm³ (rounded to two decimal places).

So, the radius of the metal cylinder is 0.635 cm, the volume is 4.745 cm³, and the density is 7.53 g/cm³.

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The value of missing cell potential is - 0.04 V

The cell potential (Ecell), is the measure of the potential difference between two half cells in an electrochemical cell.

Fe(III) / Fe(II) potential involves different chemical species in acidic and basic solution.

2FeO²⁻ + 3ClO⁻  + 2OH⁻  -->  FeO₄²⁻ + 3Cl⁻  + H₂O

FeO₄²⁻ can easily oxidise water under acidic conditions.

Hence, The value of missing cell potential is - 0.04 V

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To solve this we must be knowing each and every concept related to  chemical formula. Therefore, in the above given ways the chemical formula for the molecule can be written.

A chemical formula is a scientific notation that uses atomic symbol and numerical subscripts to represent the number and types of elements contained in a molecule. A chemical formula seems to be a concise written description of an existing three-dimensional molecule.

A chemical formula characterizes a material to the atomic level. There are three sorts of chemical formulas: empirical, molecular, and structural.

The chemical formula for the given molecules are:

2. H\(_2\)O

3. O\(_3\)

4. H\(_2\)

5. CO\(_2\)

6. CO

7. NO\(_2\)

8. CH\(_4\)

Therefore, in the above given ways the chemical formula for the molecule can be written.

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Answer:

Classify each structure according to its functional class.

Compound A contains a carbonyl bonded to two alkyl groups.

Compound B contains an oxygen bonded to two alkyl groups.

Compound C contains a carbonyl bonded to propyl and N H C H 3.

Compound D is a nitrogen bonded to three alkyl groups.

Explanation:

Compound A contains a carbonyl bonded to two alkyl groups.

-C=O group is called a carbonyl group.

If it is present between two alkyl groups then, it is a ketone.

Compound B contains oxygen bonded to two alkyl groups.

Compound B is an example of an ether molecule.

Compound C contains a carbonyl bonded to propyl and N H C H 3.

Compound C is C3H7-CO-NHCH3 which is an amide molecule.

Compound D is nitrogen bonded to three alkyl groups.

This is an example of a tertiary amine group.

Like charges repel each other, while opposite charges attract each other. This principle is one of the fundamental aspects of electrostatics. According to Coulomb's law, the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

As the distance between two charged particles decreases, the force between them increases. This is because the closer the particles are, the stronger the electric field they create, leading to a stronger force of interaction.

On the other hand, as the magnitude of the charges decreases, the force between the particles also decreases. This is because the force is directly proportional to the product of the charges. If one or both of the charges are smaller, the force they exert on each other will be weaker.

In summary, according to Coulomb's law, decreasing the distance between charged particles increases the force between them, while decreasing the magnitude of the charges decreases the force. This understanding of the relationship between charge, distance, and force is crucial in explaining the behavior of charged particles and the interactions between them.

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Answer:

To resolve this, we need to place the coefficient “2” in front of the sodium in the reactant, to give the equation shown below. 2 Na (s) + Cl 2 (g) → 2 NaCl (s) In this equation, there are two sodiums in the reactants, two sodiums in the products, two chlorines in the reactants and two chlorines in the products; the equation is now balanced.

Explanation:

Answer:

c. KBr .

Explanation:

Hello!

In this case, since electrolytes are substances that are able to carry electric current in the form of electrons via ions, those that are ionic are said to have the greatest capacity to conduct the electricity; in such a way, since SO2, C6H12O6 and CO are non-ionic molecules but covalent, they are not good conductor, therefore the best conductor would be c. KBr as it is an ionic compound due to the electronegativity of the K-Br bond.

Best regards!

Answer: number 4

Explanation:

Answer:

24.31 g/mol.

Explanation:

moles =mass/molar mass

n=w/m

Answer:

I think 10

Explanation:

Answer:

see below

Explanation:

1)  chem rxn    compound   molecule   covalent   ions    ionic

2) 2 hydrogen  one oxygen       H2O    covalent

3) is always liq

The final volume of the system, given that half of the gas is removed, leaving 0.50 mole in the cylinder and the system is warmed to 900 K is 18.45 liters

From ideal gas equation, we have

PV = nRT

Rearrange

V / nT = R/ P

R / P = Constant

Thus, we have

V₁ / n₁T₁ = V₂ / n₂T₂

Where

With the above formula, we can obtain the final volume of the system as follow:

V₁ / n₁T₁ = V₂ / n₂T₂

12.3 / (1 × 300) = V₂ / (0.5 × 900)

Cross multiply

1 × 300 × V₂ = 12.3 × 0.5 × 900

300 × V₂ = 5535

Divide both side by 300

V₂ = 5535 / 300

V₂ = 18.45 liters

Thus, the final volume of the system is 18.45 liters

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Answer: 177.23 g.

Explanation:

the volume of the aluminum bar is

1.7 cm x 3.0 cm x 12.9 cm

= 65.61 cm^3

2.7 g/cm^3 x 65.61 cm^3

177.23g

There are 3.4 milliliters of the active ingredient in the cough syrup bottle.

To calculate the volume of the active ingredient in the cough syrup bottle, we need to multiply the total volume of the bottle by the percentage of the active ingredient.

Given:

Total volume of the bottle = 68.0 mL

Percentage of active ingredient = 5.00%

First, we convert the percentage to a decimal by dividing it by 100:

Percentage of active ingredient = 5.00% = 5.00/100 = 0.05

Next, we calculate the volume of the active ingredient:Volume of active ingredient = Total volume of the bottle × Percentage of active ingredient

Volume of active ingredient = 68.0 mL × 0.05

Volume of active ingredient = 3.4 mL

Therefore, there are 3.4 milliliters of the active ingredient in the cough syrup bottle.

It's important to note that the calculation assumes a homogeneous distribution of the active ingredient throughout the solution.

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Answer:

By observing the time between transits, we know the orbital period. Kepler's Third law can be used to determine the orbital radius of the planet if the mass of the orbiting star is known (R3=T2−Mstar/Msun, the radius is in AU and the period is in earth years)

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Answer:

7.37. Oxygen for First Responders In self-contained breathing devices used by first responders, potassium superoxide, KO9, reacts with exhaled carbon dioxide to produce potassium carbonate and oxygen: 4 KO2s) 2 CO2g)2 K9CO3(s)+3 O2(g) How much O9 could be produced from 85g KOg?

Both 238U and 232Th are naturally occurring radioactive isotopes found in the Earth's crust, and they undergo radioactive decay by emitting alpha particles. However, the decay chain of 238U includes the isotope 222Rn, which is a gas and can easily be inhaled into the lungs. This presents a greater threat of lung cancer because the alpha particles emitted by 222Rn and its decay products can damage the cells in the lining of the lungs.

Furthermore, 222Rn has a relatively short half-life of 3.8 days, which means that it decays relatively quickly into other radioactive isotopes, including polonium-218 and lead-214, which are also alpha emitters. This continuous decay chain can create a buildup of radioactive particles in the lungs, increasing the risk of lung cancer.

On the other hand, the decay chain of 232Th does not include any gas isotopes, and its decay products tend to be heavy metals rather than alpha emitters. This means that the decay products are less likely to be inhaled into the lungs, and even if they are, they are less likely to cause as much damage as alpha particles.

In summary, the natural underground decay of 238U poses a greater threat of lung cancer than the decay of 232Th because it includes a gas isotope (222Rn) that can easily be inhaled into the lungs, and its decay products are alpha emitters that can cause significant damage to the cells in the lining of the lungs.

The equilibrium constant, K, is \(8.24\) with 3 sig figs.

A mole of naturally occurring potassium has a mass of\(39.098 grams\)

The equilibrium constant, K, for the reaction

BaCl2 (aq) + K2SO4 (aq) → BaSO4 (s) + 2KCl (aq)

can be calculated using the following equation:

K = \(\frac{[BaSO4]*[2KCl]}{[BaCl2]*[K2SO4]}\)

K = \(\frac{3.71 mol/L * (2*4.65 mol/L)}{(2.78 mol/L * 3.25 mol/L)}\)

K =\(8.24\)

Using the values provided, we can determine that K = 8.24.

Thus, the equilibrium constant, K, is 8.24 with 3 sig figs.

This is because a mole of potassium atoms is made up of 39.098 grams of K-39 atoms, 20.042 grams of K-20 atoms and 0.950 grams of K-41 atoms. The atomic number of all potassium isotopes is 19, which means they all have 19 protons. The number of neutrons in each isotope differs. K-39 has 20 neutrons, K-20 has 18 neutrons and K-41 has 22 neutrons. K-39 is the most abundant potassium isotope, making up 93.2581% of naturally occurring potassium.

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complete question:

For the reaction below, the amounts at equilibrium in a 1.0 L container at a certain temperature are: 2.78 moles BaCl2, 3.25 moles K2SO4, 3.71 moles BaSO4, and 4.65 moles KCl. What is the equilibrium constant, K? Enter your answer with 3 sig figs.

BaCl2 (aq) + K2SO4 (aq) ----> BaSO4 (s) + 2KCl (aq)

On Earth, naturally occurring potassium contains 3 isotopes:

39K, 20K, and 41K.Select ALL of the following that are true for a sample of naturally occurring potassium.

a.A mole of naturaly occurring potassium has a mass of 39.098 grams  K-41 has 41 electrons

b.All of the potassium isotopes have more neutrons than protons

c.All potassium isotopes have an atomic number of 19 K−39 is the most abundant potassium isotope

d.A mole of K-39 atoms has a mass of 39.098 grams

Potassium 41 has 19 protons and 22 neutrons