Predict the intermediate and product for the sequence shown. HCI HBr CH3-CEC-CHIntermediate Product

Answer:

6.55 g

Explanation:

The atomic mass of Carbon (C) is 12.0107, of Hydrogen (H) is 1.008, of Nitrogen(N) is 14.0067, and of Oxygen(O) is 15.9994

Therefore the molar mass of acetaminophen = 12.0107 + 4 * 1.008 + 14.0067 + 2 * 15.9994 = 151.16

mass of C in 99.0 g of acetaminophen = (99.0 g / 151.16 g/mol) * 1 mol C/ 1mol acetaminophen

mass of C in 99.0 g of acetaminophen = 6.545 g

ANSWER

option A and B

EXPLANATION

An increase in temperature will increase the average kinetic energy of the molecule, thereby increasing the frequency of collision.

The correct answer are option A and B

Answer

F) The pressure of a gas exerted on the walls of its container is inversely proportional to the volume of the gas when the temperature of the gas remains constant.

Explanation

Boyle's law states that the volume of a given mass of gas varies inversely with the pressure when the temperature is kept constant. An inverse relationship is described in this way. As one variable increases in value, the other variable decreases. He discovered that doubling the pressure of an enclosed sample of gas, while keeping its temperature constant, caused the volume of the gas to be reduced by half.

Answer:

1.06 liters of gas are produced

Explanation:

Our reaction is:

CaCO₃(s) → CaO(s) + CO₂ (g)

This is the decomposition of calcium carbonate.

Ratio is 1:1:1

1 mol of carbonate can decompose to 1 mol of oxide and 1 mol of oxygen.

We convert mass to moles:

4.74 g . 1 mol /100.08g = 0.0474 moles

These are the moles of oxygen produced.

We know that 1 mol of any gas at STP is contained in 22.4L

0.0474 mol . 22.4L /mol = 1.06 L

Answer:

The specific heat of the metal is 0.212 J/(g°C).

Explanation:

We can calculate the specific heat of the metal by the following equilibrium:

\( q_{a} = -q_{b} \)                          

\( m_{a}C_{a}\Delta T_{a} = -m_{b}C_{b}\Delta T_{b} \)

\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)

In the above equation, we have that the heat loses by the metal (b) is gained by the water (a).

\(m_{a}\): is the water's mass = 72.0 g

\(C_{a}\): is the specific heat of water = 4.184 J/(g°C)            

\(T_{i_{a}}\): is the initial temperature of the water = 19.2 °C

\(T_{f_{a}}\): is the final temperature of the water = 25.5 °C

\(m_{b}\): is the metal's mass = 141 g

\(C_{b}\): is the specific heat of metal =?

\(T_{i_{b}}\): is the initial temperature of the metal = 89.0 °C

\(T_{f_{b}}\): is the final temperature of the water = 25.5 °C

\(m_{a}C_{a}(T_{f_{a}} - T_{i_{a}}) = -m_{b}C_{b}(T_{f_{b}} - T_{i_{b}})\)

\(72.0 g*4.184 J/(g^{\circ} C)*(25.5 ^{\circ} C - 19.2 ^{\circ} C) = -141 g*C_{b}*(25.5 ^{\circ} C - 89.0 ^{\circ} C)\)            

\( C_{b} = -\frac{72.0 g*4.184 J/(g^{\circ} C)(25.5 ^{\circ} C - 19.2 ^{\circ} C)}{141 g(25.5 ^{\circ} C - 89.0 ^{\circ} C)} = 0.212 J/(g^{\circ} C) \)

Therefore, the specific heat of the metal is 0.212 J/(g°C).

I hope it helps you!

Answer:

The final equilibrium temperature of the system is 37.9°C.

Explanation:

To find the final equilibrium temperature, we need to use the principle of heat conservation, which states that the total heat lost by the hot water is equal to the total heat gained by the cold gold statue. We can express this principle mathematically as follows:

Q_lost = Q_gained

where Q_lost is the heat lost by the water, and Q_gained is the heat gained by the gold statue.

To calculate the heat lost by the water, we can use the formula:

Q_lost = m_w * c_w * (T_i - T_f)

where m_w is the mass of the water, c_w is the specific heat capacity of water, T_i is the initial temperature of the water, and T_f is the final equilibrium temperature.

To calculate the heat gained by the gold statue, we can use the formula:

Q_gained = m_g * c_g * (T_f - T_i)

where m_g is the mass of the gold statue, c_g is the specific heat capacity of gold, T_i is the initial temperature of the gold statue, and T_f is the final equilibrium temperature.

Equating Q_lost and Q_gained, we have:

m_w * c_w * (T_i - T_f) = m_g * c_g * (T_f - T_i)

Substituting the given values, we get:

1105. g * 4.184 J/g°C * (80°C - T_f) = 250.0 g * 0.129 J/g°C * (T_f - 21.0°C)

Simplifying and solving for T_f, we get:

T_f = 37.9°C

Therefore, the final equilibrium temperature is 37.9°C.

A science student created the following diagram to show the process that warms the air above the ocean along Fort Lauderdale beach. The step that should be labeled as conduction is step 3. The correct option is b.

Direct contact between molecules inside a substance allows for the transfer of energy, typically in the form of heat and/or electricity. Conduction can occur in gases, liquids, and solids.

Electrical current or conductivity occurs as a result of electrically charged particles moving across a material.

Therefore, the correct option is b. step 3.

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Answer:

We can solve this by the method of which i solved your one question earlier

so again here molar mass of C12H25NaSO4 is 288.372 and number of moles for 11900 gm of C12H25NaSO4 will be = 11900/288.372

which is almost = 41.26 moles

so to get one mole of C12H25NaSO4 we need one mole of C12H26O

so for 41.26 moles of C12H25NaSO4 it will require 41 26 moles of C12H26O

so the mass of C12H26O = 41.26× its molar mass

C12H26O = 41.26×186.34

= 7688.38 gm!!

so the conclusion is If you need 11900 g of C12H25NaSO4 (Sodium Lauryl Sulfate) you need C12H26O 7688.38 gm !!

Again i d k wether it's right or wrong but i tried my best hope it helped you!!

The given statement "when insulin is being mixed, NPH insulin is always drawn up first" is TRUE because when mixing insulins, it is important to follow the correct procedure to ensure accurate dosing and avoid contamination.

NPH insulin, an intermediate-acting insulin, is always drawn up first before short-acting or rapid-acting insulin.

This process, also known as "clear to cloudy," ensures that the clear insulin does not contaminate the NPH insulin vial.

First, you should draw air into the syringe equivalent to the NPH insulin dose and inject it into the NPH vial. Then, draw air equivalent to the short-acting insulin dose and inject it into the clear insulin vial.

Finally, draw the clear insulin into the syringe, followed by the NPH insulin. This method maintains the integrity of both insulins and ensures proper dosing.

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The molar concentration of the HCl solution is 1.2 M.

The balanced chemical equation for the reaction between HCl and NaOH is:

HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)

From the equation, we can see that one mole of HCl reacts with one mole of NaOH.

Given that 15.0 mL of 0.40 M NaOH is required to neutralize 5.0 mL of HCl, we can use the following equation to calculate the concentration of HCl:

moles of NaOH = concentration of NaOH x volume of NaOH (in liters)

moles of HCl = moles of NaOH (since they react in a 1:1 ratio)

concentration of HCl = moles of HCl / volume of HCl (in liters)

Converting the volumes to liters:

Volume of NaOH = 15.0 mL = 0.015 L

Volume of HCl = 5.0 mL = 0.005 L

Substituting the values:

moles of NaOH = 0.40 M x 0.015 L = 0.006 moles

moles of HCl = 0.006 moles (since they react in a 1:1 ratio)

concentration of HCl = 0.006 moles / 0.005 L = 1.2 M

As a result, the HCl solution has a molar concentration of 1.2 M.

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The change in enthalpy (ΔH) for the reaction N2 + 3H2 → 2NH3 is 1844 kJ/mol.

To calculate the change in enthalpy (ΔH) for the given reaction, we need to determine the total energy change associated with breaking the bonds in the reactants (N2 and 3H2) and forming the bonds in the product (2NH3).

Reactants:

N≡N (nitrogen gas): 1 bond at 942 kJ/mol

H–H (hydrogen gas): 3 bonds at 432 kJ/mol each

Products:

N–H (ammonia): 6 bonds at 386 kJ/mol each

Now, let's calculate the energy change for the bonds broken and formed:

Energy change for bonds broken in the reactants:

2 N≡N bonds = 2 × 942 kJ/mol = 1884 kJ/mol

6 H–H bonds = 6 × 432 kJ/mol = 2592 kJ/mol

Energy change for bonds formed in the product:

6 N–H bonds = 6 × 386 kJ/mol = 2316 kJ/mol

Now, we can calculate the overall energy change:

ΔH = (Energy of bonds broken) - (Energy of bonds formed)

= (1884 kJ/mol + 2592 kJ/mol) - (2316 kJ/mol)

= 4160 kJ/mol - 2316 kJ/mol

= 1844 kJ/mol

Therefore, the change in enthalpy (ΔH) for the reaction N2 + 3H2 → 2NH3 is 1844 kJ/mol.

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The concentration of Ca(OH)2 in the solution is approximately 1.33 x 10^(-6) M.

To find the concentration of Ca(OH)2 in a solution with a pH of 8.57, we need to use the concept of pOH, which is the negative logarithm of the hydroxide ion concentration ([OH-]). The pOH can be calculated by subtracting the pH from 14, which gives us 14 - 8.57 = 5.43.

Since Ca(OH)2 produces two OH- ions for every molecule of Ca(OH)2 that dissolves, the concentration of OH- ions will be twice the concentration of Ca(OH)2. Thus, we have [OH-] = 2x, where x represents the concentration of Ca(OH)2.

Taking the antilogarithm of the pOH, we find that [OH-] = 10^(-pOH) = 10^(-5.43).

Since [OH-] = 2x, we can write 2x = 10^(-5.43) and solve for x.

x = (10^(-5.43))/2 ≈ 1.33 x 10^(-6) M

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Answer:c.an increase in global temperature

Explanation:

Human activities add greenhouse gases to the atmosphere,trapping more heat than usual and contributing to global warming.It causes slight rises in average global temperatures which may lead to huge affects.

The most frequent effect is that glaciers and ice caps melt faster than usual.

Burning coal cause acid precipitation to enter the air.

Acid rain is defined as all kinds of rain with a pH below 5.6. Rain is naturally acidic (pH slightly below 6) because carbon dioxide (CO2) in the air which dissolves with rainwater has the form a weak acid . This type of acid in rain is very useful because it helps dissolve the minerals in the soil which are needed by plants and animals.

Acid rain is caused by Sulfur which is an impurity in fossil fuels as well as nitrogen in the air which reacts with oxygen to form sulfur dioxide and nitrogen oxides. These substances diffuse into the atmosphere and react with water to form sulfuric acid and nitric acid which are easily soluble so that they fall with the rainwater. This acidic rainwater will increase the acidity of the soil and surface water which will prove harmful to fish and plant life. Efforts to overcome this are currently being intensively implemented.

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The formula for the acetate polyatomic ion is C₂H₃O₂⁻. The acetate ion is composed of two carbon atoms (C), three hydrogen atoms (H), and two oxygen atoms (O).

It carries a negative charge of -1, indicated by the superscript - on the right side of the chemical formula.

The acetate ion is commonly found in compounds such as sodium acetate (NaC₂H₃O₂) or calcium acetate (Ca(C₂H₃O₂)₂). It is also the conjugate base of acetic acid (CH₃COOH), a weak acid commonly found in vinegar.

The formula C₂H₃O₂ represents the ratio of atoms in the acetate ion, and the superscript - indicates the presence of one additional electron, giving the ion a net negative charge.

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Option D: The correct name for an aqueous solution of H₂SO₄ is sulfuric acid.

One of the most important chemicals in terms of commerce is sulfuric acid, often known as oil of vitriol or hydrogen sulfate (H₂SO₄). It is a dense, colorless, oily liquid that is very caustic. Industrially, sulfuric acid is created when water reacts with sulfur trioxide (see sulfur oxide), which is created chemically by combining oxygen and sulfur dioxide, either through the contact process or the chamber process.

Being a very strong acid, sulfuric acid totally ionizes in aqueous solutions to produce hydrogen sulfate ions (HSO₄) and hydronium ions (H₃O⁺). Hydrogen sulfate ions also dissolve in diluted solutions, producing more hydronium ions and sulfate ions (SO₄²⁻).

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Correct question:

The correct name for an aqueous solution of H2SO4 is Group of answer choices

sulfurous acid

hydrosulfuric acid

none of these

sulfuric acid

hydrosulfurous acid

Answer:

6.31x10¹¹s⁻¹ = Frequency

Explanation:

To convert frequency to energy or vice versa we must use the equation:

e = h*f

Where e is energy in joules (4.18x10⁻²²J)

h is Planck's constant (6.626x10⁻³⁴Js)

Replacing:

4.18x10⁻²²J = 6.626x10⁻³⁴Js*f

Answer:

true

Explanation:

The sensitivity of the drug can be determined by finding the derivative of the reaction function with respect to the dosage.

To find the sensitivity of the drug, we need to calculate the derivative of the reaction function R(x) with respect to x.

Taking the derivative of the given function R(x) = \(x^2(660 - x/3)\) involves applying the product rule and chain rule.

Differentiating R(x) with respect to x yields:

R'(x) = \(2x(660 - x/3) - x^2/3\)

Simplifying further:

R'(x) = \((1320x - x^2) / 3\)

This expression represents the rate of reaction with respect to the dosage, which indicates the sensitivity of the drug.

By evaluating R'(x) at different dosage values, we can determine how the rate of reaction changes with the dosage and infer the drug's sensitivity.

The sensitivity of a drug refers to how the rate of reaction, or response, changes in relation to the dosage administered.

In this case, the sensitivity can be quantified by calculating the derivative of the reaction function R(x) with respect to the dosage x.

By taking the derivative, we obtain R'(x), which represents the rate of change of the reaction with respect to the dosage.

Evaluating R'(x) at different dosage values allows us to determine the drug's sensitivity to dosage variations.

A higher magnitude of R'(x) indicates a greater sensitivity, as the rate of reaction changes more rapidly with dosage adjustments.

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In a conducting metal, the valence electrons are delocalized and can  The conduction band is partially filled with electrons, allowing them to move and conduct electricity. The valence band, which is formed by the lower energy atomic orbitals, is either completely filled or partially filled.

A semiconductor has a smaller energy gap between the valence band and the conduction band compared to an insulator. This smaller energy gap allows some electrons to move from the valence band to the conduction band when energy is supplied. In a semiconductor, the valence band is usually filled, while the conduction band is either empty or only partially filled.

In an insulator, the energy gap between the valence band and the conduction band is larger than that of a semiconductor. This large energy gap makes it difficult for electrons to move from the valence band to the conduction band, resulting in very limited conductivity.

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Taking into account the definition of calorimetry, the temperature change of A will be one sixth of the temperature change of B.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, for object A:

QA = cA× mA× (ΔT)A

and for object B:

QB = cB× mB× (ΔT)B

You know:

Object A has double the specific heat of object B. ⇒ cA= 2× cB

Object A has triple the mass of object B. ⇒ mA= 3× mB

If the same amount of heat is applied to both objects ⇒ QA= QB

Then:

cA× mA× (ΔT)A= QB = cB× mB× (ΔT)B

2× cB × 3× mB× (ΔT)A=  cB× mB× (ΔT)B

Solving:

6× cB × mB× (ΔT)A= cB× mB× (ΔT)B

(ΔT)A= (cB× mB× (ΔT)B) ÷ (6× cB × mB)

(ΔT)A=\(\frac{1}{6}\) (ΔT)B

Finally, the temperature change of A will be one sixth of the temperature change of B.

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Answer:

d

Explanation:

A: mass never increases or decreases. It is a value that is the same everywhere in the universe. A is not correct.

B: it can be but that is not the only unit that can be used

C: A spring scale measures force not mass.

D: The answer to this question is D if the word at the end is balance.

Answer:

In a displacement reaction, a more reactive metal pushes out a less reactive metal from its compound. For example, aluminium displaces iron from iron oxide.

Explanation:

Because aluminium is more reactive than iron, it displaces iron from iron(III) oxide. The aluminium removes oxygen from the iron(III) oxide: iron is reduced.

...

Hope this answer can help you. Have a nice day!

In a displacement reaction, a more reactive metal pushes out a less reactive metal from its compound. For example, aluminium displaces iron from iron oxide.

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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Answer:

here

Explanation:

1s22s22p63s23p1.

The pressure of the CO₂ = 0.995 atm

The complete question

A student is doing experiments with CO2(g). Originally, a sample of gas is in a rigid container at 299K and 0.70 atm. The student increases the temperature of the CO2(g) in the container to 425K.

Calculate the pressure of the CO₂ (g) in the container at 425 K.

Gay Lussac's Law

When the volume is not changed, the gas pressure is proportional to its absolute temperature

\(\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\)

P₁=0.7 atm

T₁=299 K

T₂=425 K

\(\tt P_2=\dfrac{P_1\times T_2}{T_1}\\\\P_2=\dfrac{0.7\times 425}{299}=0.995 `atm\)

The process of separating ions from a compound is called dissociation

Dissociation is defined as the process by which break into two or more components known as ions.

A typical example of a dissociation reaction is an ionisation reaction where by acids undergo dissociation, to produce hydrogen ions.

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Answer:

2p is the correct representation

Explanation: