CAN SOMEONE PLEASE ANSWER THIS CORRECTLY??


In this activity, you are tasked with designing an airbag for a company that creates airbags for automobiles. You must design the driver’s front airbag for a specific car model so it will protect the driver as effectively as possible. For this car, the airbag must have a volume of 58 liters when fully inflated. To provide an adequate cushion for the driver’s head, the air pressure inside the airbag should be 4.4 psi. This pressure value is in addition to the normal atmospheric pressure of 14.7 psi, giving a total absolute pressure of 19.1 psi, which equals 1.30 atmospheres.


One of the main components of an airbag is the gas that fills it. As part of the design process, you need to determine the exact amount of nitrogen that should be produced. Calculate the number of moles of nitrogen required to fill the airbag. Show your work. Assume that the nitrogen produced by the chemical reaction is at a temperature of 495°C and that nitrogen gas behaves like an ideal gas. Use this fact sheet to review the ideal gas law.

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6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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Sense receptors belong to autonomic nervous system which include brain , spinal cord and the nerves.

The brain is defined as a complex organ which is capable of controlling various actions like thinking, memory,emotions, touch , huger and every regulatory process of our body.

The brain along with the spinal cord make up the central nervous system.The average adult brain is made up of 60% of fat and remaining 40 % comprises of water, carbohydrates, proteins and salts.

It has blood vessels and nerves which include neurons and glial cells.It has 3 parts,cerebrum,cerebellum and medulla oblongata which can also be divided into forebrain,midbrain and hindbrain. The brain controls the involuntary actions of body like breathing,digestion,etc.

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Answer:

adding a catalyst will increase the reaction rate.

Explanation:

im like 95% sure thats right.

Answer:

A. C. D

Explanation:

ap ex

Gravity causes spacecraft such as stars, planets, moons, and other bodies to orbit one another. Revolution describes this style of movement.

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Reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

The enthalpy could be obtained by the use of the Hess law of constant heat summation. As such, we have a number steps and it is possible for use to obtain the enthalpy of the final reaction as shown by a series of manipulations.

By inspection, we can see that, if we desire to obtain the enthalpy of the final reaction as shown, then we have to reverse the sign of the second equation, change the sign of the enthalpy and add. Option B

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Answer:

The rms speed of its molecules becomes. (T) has become four times. Therefore, v_(rms) will become two times,...

Answer:

2969429th Ave

Explanation:

i dont know

Answer:

N2(g) + O2(g) ----->2NO(g)      ΔH= 181 kJ

Explanation:

The equation of the reaction according to the question should be written with the lowest coefficient. A thermochemical reaction usually includes the enthalpy of reaction as part of the reaction equation

So we have the equation of the reaction as;

N2(g) + O2(g) ----->2NO(g)      ΔH= 181 kJ

The positive enthalpy shows that heat was absorbed in the reaction

HAZWOPER training and certification recognize:

The correct option is both A and C

HAZWOPER (Hazardous Waste Operations and Emergency Response) training and certification recognize that a large number of victims (as much as 80%) in hazardous waste incidents or emergencies will self-present or be self-referred for medical treatment.

Additionally, HAZWOPER training acknowledges that victims may use any entrance they can access at a hospital, not just the emergency department entrance.

This is because individuals affected by hazardous materials may arrive at different areas of the hospital seeking medical assistance.

Therefore, option d. Both A and C are correct statements regarding the recognition of HAZWOPER training and certification.

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Answer:

Na3N

Explanation:

cuzdoodlikeimsosure

Answer:

Glucose!!

Explanation:

Also keep in mind that the actual sugar produced from photosynthesis is C6H12O6, which is the basis for glucose as well as other complex molecules

Answer:

Glucose

Explanation:

photosynthesis uses the energy from the light to convert carbon dioxide molecules which makes glucose

Answer: It is option 4

Explanation:

The Chlorine have to share 2 electrons

Given

Mass of NO - 824 g

Molar mass of NO - 30.01g/mol

No of moles of NO = Given mass/Molar mass

No of moles of NO = 824/30.01= 27.45 mole

Hence 27.5 moles of NO are formed!

The concentration of the solution is as follows;

H⁺ = 0.045 M

SO₄(²⁻) = 0.045 M

HSO₄⁻ = 0.155 M

Potassium hydrogen sulfate, KHSO₄ is a salt that will completely dissociate in water into its constituent ions, K+ and HSO₄⁻.

HSO₄⁻ ⇌ H⁺ + SO₄(²⁻)

Let's say x is the amount of HSO4- that dissociates. Then it will be

HSO₄⁻  = 0.20 - x

H⁺ = x

SO₄(²⁻) = x

Now, we can use the Ka for HSO4-, which is given as 1.3 x 10⁻². We will get the equation

Ka = (H⁺)(SO₄(²⁻)) / (HSO₄⁻ )

Substituting the expressions for the equilibrium concentrations gives:

1.3 x 10⁻² = (x)(x) / (0.20 - x)

So the concentrations are:

HSO₄⁻  = 0.20 - x = 0.20 - 0.045 = 0.155 M

H⁺ = x = 0.045 M

SO₄(²⁻) = x = 0.045 M

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Answer:

Explanation:

1,2,4,

The equations that show combustion are equations A, B and D.

When we talk about combustion, the idea is that the substance would be burnt in oxygen. In other words, the combustion can be taken to be an oxidation reaction. It is an oxidation reaction in the sense that the oxidation number of the substance that is reacting with the oxygen would become increased.

When we look at the equations that we have, it is quite easy to pick out among the balanced reaction equations that are shown here the ones that has to do with the burning of the substance in oxygen and a consequent rise in the oxidation number.

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To solve this question we have to apply Charles Law, that states that:

Where V1 is the initial volume, T1 is the initial temperature, V2 is the final volume and T2 is the final temperature.

Before using the given values, we have to convert the given temperatures to Kelvin degrees:

Now, we can replace these values for T1 and T2 respectively. Also replace V1 for 1L and solve for V2 to find the volume of the balloon inside the freezer:

It means that the volume of the balloon in the freezer is 0.86L.

Answer:

The answer is B.

Explanation:

Systematic error arises from a faulty measuring device, imperfect observation methods, or an uncontrolled environment.

Answer:

your answer is a

Explanation:

Taking the length & width if your area, then putting those two figures together to obtain the size in feet squared, is how you compute a rectangle area (ft2). A typical sort of skin growth is called a mole.

A typical sort of skin growth is the mole (nevus). Clusters of purple cells are what cause them, which frequently manifest as tiny, dark brown spots (melanocytes). The majority of people possess 10 to 40 moles 1st form throughout adolescence and childhood and may change or disappear over time.

It takes 6.022 1023 units of a chemical to make up one mole . Avogadro's constant or Avogadro's constant are both designations for the number 6.022 1023. In order to convert between particle mass and number, the mole concept might be employed. Sal Khan is the author.

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This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

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Answer:

Option (C) Bromine (Br) has more electrons, which makes its energy sublevels more negative, which pulls them closer to the positively charged nucleus.

Atomic radius is the size of the atom that measures from the center to the outermost electron.  Bromine has a smaller atomic radius because of more number of electrons. Thus, option C is correct.

The elements are placed in the periods and groups in the periodic table based on the atomic number. Bromine belongs to group 17, period 4 in the periodic table, and scandium (Sc) to group 3, period 4.

In the periodic trend, the atomic radii of the element in the period decrease when moving from left-right. Here bromine and scandium both belong to the same period but differ in the group.

The number of electrons in bromine is more than the scandium element that in turn increases the force of attraction towards the nucleus making them have smaller radii.

Therefore, bromine has smaller radii.

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Answer:

I think 1.56

Explanation:

If you're attempting to synthesize 2 benzyl pentanoic acid from acetoacetic ester, keep in mind that you can do so fairly quickly by following these simplified instructions:

From its pungent free scent to its solid state at temperatures ranging from 118 120°C, acetoacetic ester (better known as ethyl acetoacetate) offers significant value for those working within organic synthesis.

As one of many potent ketones utilized by researchers around the globe its unique properties make it ideal for building complex molecules essential for modern medicine and more.

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The pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91 (option B).

The pH of a solution in chemistry refers to the notation expressing the acidity or alkalinity of a solution.

The pH is measured on a logarithmic scale of which 7 is neutral, lower values are more acid and higher values more alkaline.

The pH of a solution can be calculated using the following formula;

pH = - log {H+}

pH = - log {0.0100}

pH = 2

Therefore, the pH of a 0.0100 M sodium benzoate solution with a Kb of 1.5 × 10-¹⁰ is 5.91.

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Order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.

The ΔHrxn for the neutralization reaction between aqueous NaOH and HCl is -994.6 kJ/mol HCl.

Given that A 100.0 mL sample of 0.255 M NaOH is mixed with a 100.0 mL sample of 0.200 M HCl in a coffee cup calorimeter.  Both solutions were initially at 20.00°C and the temperature of the resulting solution was recorded as 37.00°C.  

We are to determine the ΔHrxn (in units of kJ/mol HCl) for the neutralization reaction between aqueous NaOH and HCl.  The balanced chemical equation for the neutralization reaction between aqueous NaOH and HCl is

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

(l)First, we need to determine the limiting reactant. It is necessary to identify the limiting reactant in order to calculate the moles of HCl reacted in the reaction and use it to determine ΔHrxn.  

Limiting reagent is the reactant that will be completely used up first, stopping the reaction. The reactant that is not completely consumed is the excess reactant.

We can use the concept of Stoichiometry to identify the limiting reactant.  To determine the limiting reactant, we can use the following formula:  

Molarity (M) = moles of solute (mol) / liters of solution (L) For NaOH, molarity (M) = 0.255 M For HCl, molarity (M) = 0.200 M.

Let's calculate the moles of NaOH and HCl:

Moles of NaOH = Molarity (M) × Volume (L)Moles of NaOH = 0.255 M × 0.100 L = 0.0255 mol

Moles of HCl = Molarity (M) × Volume (L)

Moles of HCl = 0.200 M × 0.100 L = 0.0200 mol

As we can see, the number of moles of NaOH is more than the number of moles of HCl.   NaOH is present in excess, while HCl is limiting.

The amount of HCl determines how much NaOH reacts, so we will use the number of moles of HCl to determine ΔHrxn.Next, we can calculate the amount of heat absorbed by the reaction:

qrxn = – qcal where qrxn = heat absorbed by the reactionqcal

= heat released by the calorimeterqcal

= (mass of water + mass of calorimeter) × specific heat of water × ΔTqcal = (200.0 g + 50.0 g) × 4.184 J/g·°C × (37.00°C – 20.00°C)

= 19,892 J or 19.892 kJqrxn

= – 19.892 kJ  (because no heat is lost to the calorimeter or the surroundings)

Next, we can use the equation below to calculate ΔHrxn:ΔHrxn = qrxn / n ΔHrxn = -19.892 kJ / (0.0200 mol × (-1)) = 994.6 kJ/mol HCl (Negative sign indicates that the reaction is exothermic).

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