Are these equations balanced? If not how do I balance them?

Answer:

2.4 grams of ClF3

Explanation:

First let us determine the moles of Cl2 and F2,

Cl2 = (  ( 337 )( 2.05 L ) / ( 0.082 )( 298 K ) ) * ( 1 atm / 780 ),

Cl2 = ( 690 / 24.436 ) * ( 1 / 780 ),

Cl2 = ( About ) 0.036 moles of Cl2

_________________________________________________

F2 = ( ( 729 )( 2 L ) / ( 0.082 )( 298 K ) ) * ( 1 atm / 780 ),

F2 = ( 1458 / 24.436 ) * ( 1 / 780 )

F2 = ( About ) 0.078 moles of F2

Now let us identify the limiting reactant, considering the ratio between ClF3 and Cl2 / F2. In this case F2 is the limiting reactant, as it forms a smaller molar ratio;

The theoretic yield is thus performed with the limiting reactant F2,

0.078 * ( 2 / 3 ) * ( 92.45 / 2 ) = ( About ) 2.4 grams of ClF3

Strong electrolytes : NaCl, HBr The correct options are a and b.

Weak electrolytes : HCH3CO2 The correct option is c.

Non-electrolyte:  CH3OH, H2O The correct options are d and e.

The classification of aqueous solutions as non-electrolytes, strong electrolytes, or weak electrolytes depends on the degree to which they dissociate into ions when dissolved in water.

a) NaCl - Strong electrolyte: It dissociates completely into its ions (Na+ and Cl-) when dissolved in water.

b) HBr - Strong electrolyte: It also dissociates completely into its ions (H+ and Br-) in an aqueous solution.

c) HCH3CO2 (Acetic Acid) - Weak electrolyte: It partially dissociates into its ions (H+ and CH3COO-) in water.

d) CH3OH (Methanol) - Non-electrolyte: It does not dissociate into ions and thus does not conduct electricity in an aqueous solution.

e) H2O (Water) - Non-electrolyte: Although it can act as a weak electrolyte when ionized to a small extent, it is generally considered a non-electrolyte because of its low conductivity.

The correct options for strong electrolytes are a and b, for non-electrolytes are d and e and for weak electrolytes is c.

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The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Mechanical waves can help in the treatment of cancer due to heat generated by the high frequency waves.

A mechanical wave is a wave that requires material medium for its propagation, example include;

Sound wave in example of mechanical wave because it requires material medium for its propagation.

High-frequency sound waves (HIFU) is used in the  treatment  of cancer because the strong beam generates heat which is directed to a specific part of a cancer.

The heat generated destroys the cancer cells.

Thus, mechanical waves can help in the treatment of cancer due to heat generated by the high frequency waves.

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Answer:

Electrostatic

Explanation:

The forces that are overcome are the repulsive electrostatic forces between the protons (all charged positively).

Answer:

Ammonia can be prepared using Haber process based on the following equation:

3H2 + N2 <.........> 2NH3Explanation:

The reaction above talks about the production of ammonia NH₃

To solve this question, we'll begin by writing the balanced equation for the reaction between H₂ and N₂. This is illustrated below:

3H₂ + N₂ —> 2NH₃

From the balanced equation above,

3 moles of H₂ reacted to produce 2 moles of NH₃.

Therefore, 26 moles of H₂ will react to produce = (26 × 2)/3 = 17.3 moles of NH₃.

Thus, 17.3 moles of NH₃ were obtained from the reaction.

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Answer:

water

Explanation:

i cba

Chlorine has higher electronegativity

This is the tendency of an element to attract electron to itself. According to the periodic table, the electronegativity of an element increases from the left to the right across the period and decreases top to bottom down the group.

This trend exists due to the electronic configuration of the elements. Chlorine element has 7 valence electron in its outer shell and as such will easily accept an electron to itself to attain its octet configuration compared to magnesium that looses his two valence electrons to other elements in order to attain octet configuration.

The tendency of chlorine atom to attract electron makes it have a higher electronegativity compared to magnesium.

Answer:

The ice pack is absorbing heat from your wrist.

Explanation:

Answer:

the one above me is correct

Answer:

D

Explanation:

Answer

Explanation

Given:

The mass of her lead, m = 75 grams

The initial temperature, T₁ = 40 °C

The temperature needed for her experiment is the final temperature, T₂ = 80 °C

The specific heat of lead, c = 0.128 J/g°C

What to find:

The heat that the lead must absorb so that Lindsey can do her experiment.

Step-by-step solution:

The heat, Q that the lead must absorb so that Lindsey can do her experiment can be calculated using;

But ΔT = Final temperature - Initial temperature

ΔT = T₂ - T₁

ΔT = 80 °C - 40 °C

ΔT = 40 °C

Therefore, putting m as 75 g, c as 0.128 J/g°C, and ΔT = 80 °C into the formula above, we have

Therefore, the heat that the lead must absorb so that Lindsey can do her experiment is 384 J

Answer:

17 g/mol

Molecular formula → NH3

mass of N → 14

mass of H → 1

total mass → 14 + 3×1 = 17

NH3

Explanation:

N=14

H=1

=1×3=3

14+3=17

Answer:a, c, d

Explanation: just did it on edge

Answer:

- photography     (captures images that can be shared and

compared by scientists)

- space telescope    (allows access to images taken from outside

Earth's atmosphere)

- radio telescope     (detects electromagnetic frequencies outside

the visible spectrum that reaches Earth)

- optical telescope    (obtains a magnified and clear view of a part

of the sky to observe celestial objects)

Explanation:

Photography is used to capture still images based on the principle that some compounds react in the presence of optical energy.

Space telescope is a type of observatory telescope positioned in outer space to observe distant planets, galaxies and other astronomical objects. Space telescopes reduces the interference from ultraviolet frequencies, X-rays and gamma rays; as well as light pollution which ground-based observatories encounter.

A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky. Radio telescope is used to study radio frequencies  emitted by astronomical objects, that fall outside the visible light spectrum.

An optical telescope is used to gather and focuses light, from a far distant object. Optical telescope is used within the visible light spectrum of the electromagnetic spectrum, to create a magnified image, for direct view, or to make a photograph, or to collect data through electronic image sensors.

Answer:

- photography     (captures images that can be shared and

compared by scientists)

- space telescope    (allows access to images taken from outside

Earth's atmosphere)

- radio telescope     (detects electromagnetic frequencies outside

the visible spectrum that reaches Earth)

- optical telescope    (obtains a magnified and clear view of a part

of the sky to observe celestial objects)

Explanation:

1.0 mole of H2 will react with 0.33 moles of N2.

The balanced chemical equation for the reaction between H2 and N2 is:

N2 + 3H2 → 2NH3

From the equation, we can see that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, if we have 1.0 mole of N2, we need 3.0 moles of H2 to react completely.

If we are given 1.0 mole of H2, we can calculate the amount of N2 it will react with by using the stoichiometry of the equation:

1.0 mole H2 × (1 mole N2/3 moles H2) = 0.33 moles N2

Therefore, 1.0 mole of H2 will react with 0.33 moles of N2.

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By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers.

By removing the need to build additional transmission lines and equipment, energy storage may reduce costs for utilities and their customers. Energy storage's inherent ability to offer backup power in the event of grid failure is a feature that both residential consumers and commercial owners find highly desirable.

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DNA and RNA can also be ISOLATED from the same biological sample.

So the answer is no, both DNA and RNA are together.

Answer:

so the answer is no

both DNA and RNA are together.

Explanation:

DNA and RNA can also be ISOLATED from the same. biological sample

Answer:

C

Explanation: I mL = 1 cm3 and 1 L = 1000 mL so 1 L - 1000 cm3

Answer:

d

Explanation:

The amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To calculate the amount of copper in moles in a pure copper sheet, we need to use the molar mass of copper and the given mass of the sheet.

The molar mass of copper (Cu) is approximately 63.55 g/mol. This value represents the mass of one mole of copper atoms.

Given that the mass of the pure copper sheet is 27.5 g, we can calculate the number of moles using the following formula:

moles = mass / molar mass

Substituting the values:

moles = 27.5 g / 63.55 g/mol

moles ≈ 0.433 mol

Therefore, the amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To arrive at this result, we divided the given mass of the sheet (27.5 g) by the molar mass of copper (63.55 g/mol). This calculation allows us to convert the mass of the sheet into the corresponding number of moles of copper.

The result tells us that the 27.5 g pure copper sheet contains approximately 0.433 moles of copper atoms. This conversion to moles is useful in various chemical calculations and allows for easier comparison and analysis of quantities on a molecular scale.

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Answer:

Explanation:

The factors that may affect the reaction are,

(1) temperature at which the reaction is carried out,

(2) surface area of the antacid tablet,

(3) concentration of bicarbonate salt.

(1) Temperature: It increases the rate of a reaction by decreasing the activation energy of the reaction.

(2) Surface area: By using powdered tablet rather than an entire one, the surface area of the tablet increases that makes the rate of reaction faster.

(3) Concentration: Increase in the concentration of the bicarbonate increases the possibility of antacid substance to come into contact of more bicarbonate. Thus, the rate of a reaction increases.

Steps:

(1) Temperature. (i) at 1st, the reaction is to be carried out at room temperature. (ii) with the aid of timing device the duration of the reaction time is required to be measured. (iii) Consecutive reactions are required to perform with increase in 1 oC temperature for each reaction and the endpoint time is required to be noted. (iv) plot a graph depicting the reaction time with corresponding temperature. (v) a negative slopre in graph will indicate increasing rate of reaction, \Delta time/\Delta temperature= -ve .

(2) Surface Area. (i) Reaction is to carried out with entire antacid tablet at first and the reaction rate is required to be measured. (ii) Then the reaction under same condition is required to be carried out with powdered antacid tablet and the duration of the reaction is to be measured. The reaction rate will be faster in case of powdered tablet.

(3) Concentration. (i) Concentration of the bicarbonate solution should be varied in increasing order. (ii) the reaction rate is required to be measured for each concentration. (iii) a graph should be plotted with reaction rate at different concentration. A negative slope in the plot indicates increased reaction rate with increasing concentration of bicarbonate. \Delta time/\Delta concentration= -ve .

Errors: Manual errors may occur in course of reaction rate measurement which can easily be overcome with the help of multiple measurements for same data.

agriculture. The largest source of pollution to the Bay comes from agricultural runoff, which contributes roughly 40 percent of the nitrogen and 50 percent of the phosphorus entering the Chesapeake Bay.

Airborne nitrogen is one of the most significant polluters of the Chesapeake Bay and its tributaries. Excess nitrogen may drive the growth of algae blooms, preventing sunlight from reaching underwater grasses and creating low-oxygen "dead zones" that smother marine life. Nitrogen and phosphorus occur naturally in aquatic habitats, but human activities such as fertilizer usage, wastewater management, fossil fuel combustion, and soap and detergent discharge inject excess nutrient pollution into ecosystems quicker than ecosystems can respond. 1At Home and Around the Neighborhood: Fertilizers, yard and pet waste, and some soaps and detergents contain nitrogen and phosphorus and, if not utilized or disposed of appropriately, can contribute to nutrient contamination.

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Answer:

The van't Hoff factor of NaCl in liquid X is 1.69

Explanation:

Step 1: Data given

Mass of urea = 78.6 grams

Molar mass of urea = 60.06 g/mol

Mass of liquid X = 700 grams = 0.700 kg

he freezing point of the solution is 4.9°C lower than the freezing point of pure X

When 78.6 g of sodium chloride are dissolved in the same mass of X, the freezing point of the solution is 8.5°C lower than the freezing point of pure X.

Molar mass of NaCl = 58.44 g/mol

Step 2: Calculate moles

Moles urea = mass / molar mass

Moles urea = 78.6 grams / 60.06 g/mol

Moles urea = 1.31 moles

Moles NaCl = 78.9 grams / 58.44 g/mol

Moles NaCl = 1.35 moles

Step 3: Calculate molality

Molality = moles / mass of liquid

Molality urea = 1.31 moles / 0.700 kg

Molality = 1.87 molal

Molality NaCl = 1.35 moles / 0.700 kg

Molality NaCl = 1.92 molal

Step 4: Calculate the freezing point depression constant of X

ΔT = i*Kf*m

⇒with ΔT = the freezing point depression = 4.9 °C

⇒with i = the van't hoff factor of urea = 1

⇒with Kf =the freezing point depression consant of X = TO BE DETERMINED

⇒with m = the molality of urea solution = 1.87 molal

4.9 °C = 1 * Kf * 1.87 molal

Kf == 4.9 / 1.87

Kf = 2.62 °C/m

Step 5: Calculate the van't Hoff facotr of NaCl in X

ΔT = i*Kf*m

⇒with ΔT = the freezing point depression = 8.5 °C

⇒with i = the van't hoff factor of urea = TO BE DETERMINED

⇒with Kf =the freezing point depression consant of X = 2.62 °C/m

⇒with m = the molality of urea solution = 1.92 molal

8.5 °C = i * 2.62 °C/m * 1.92 m

i = 8.5 / (2.62 * 1.92)

i = 1.69

The van't Hoff factor of NaCl in liquid X is 1.69

The 2 isotopes of Nitrogen are Nitrogen-14  and Nitrogen-15 .

Isotopes are atoms with the same number of protons and different number of neutrons. Even though they have nearly identical chemical properties, they differ in mass which affects their physical properties.

As you know, the atomic number of nitrogen is = 7.

Isotopes are forms of elements that have the same atomic number (Z) but different mass numbers because they have different numbers of neutrons (A).

Now,

Atomic number = number of protons

Isotopes have the same atomic number.

Atomic number for both isotopes = 7. However, the mass numbers of the two isotopes are different.

In other words, the mass number = the number of (protons + electrons).

Therefore, nitrogen-14 has a mass number of 14 and nitrogen-15 has a mass number of 15.

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NaClO₃ ⇒ NaCl + O₂ ⇒ unbalanced

1. O : left 3, right 2

give coefficient left 2, right 3

2NaClO₃ ⇒ NaCl + 3O₂

2. Na and Cl : left 2, right 1

give coefficient right 2

2NaClO₃ ⇒ 2NaCl + 3O₂ ⇒ balanced

Answer:

c.11.2

Explanation:

Answer:

If there are more products than reactants, that means the reaction has shifted towards the left, which is the backward direction. If there are more reactants than products, that means the reaction has shifted towards the right, which is the forward direction.