M/J 09/P1/Q1
In leaded petrol there is
an additive composed of lead, carbon and hydrogen only. This compound contains
29.7% carbon and 6.19% hydrogen by mass.
What is the value of x in the empirical formula PbC₂Hx?
A 5
B 6
C 16
D 20

 A triglyceride containing a 16 carbon fatty acid chain can potentially yield approximately 98 ATP molecules through the process of beta-oxidation and subsequent energy production.

The number of ATP generated from a triglyceride containing 16 carbon fatty acid chains can be estimated through the process of beta-oxidation and subsequent energy production in the mitochondria.

For every cycle of beta-oxidation, a fatty acid chain is broken down into two-carbon units, which enter the citric acid cycle (also known as the Krebs cycle). During the citric acid cycle, high-energy electron carriers (NADH and FADH2) are produced.

These carriers then enter the electron transport chain (ETC), where ATP is generated through oxidative phosphorylation.

A general estimate is that each cycle of beta-oxidation produces around 14 ATP molecules. Since a 16-carbon fatty acid chain would undergo seven cycles of beta-oxidation (16/2 = 8 two-carbon units, but only seven cycles as the last cycle produces acetyl-CoA), we can approximate the ATP yield as 7 cycles × 14 ATP/cycle = 98 ATP.

However, it's important to note that this is a simplified estimation and the actual ATP yield can vary depending on factors such as the specific fatty acid chain and the efficiency of the metabolic pathways involved.

For more such questions on ATP molecules visit:

https://brainly.com/question/1581552

#SPJ8

Answer:

The refractive index can be seen as the factor by which the speed and the wavelength of the radiation are reduced with respect to their vacuum values: the speed of light in a medium is v = c/n, and similarly the wavelength in that medium is λ = λ0/n, where λ0 is the wavelength of that light in vacuum.

Explanation:

The mass (in grams) of fluorine the sample have is 2.91 g

First, we shall determine the mole of 9 grams of cobalt. Details below:

Mole = mass / molar mass

Mole of cobalt = 9 / 58.93

Mole of cobalt = 0.153 mole

Finally, we shall determine the mass of fluorine the present in the compound. Details below:

Mole = mass / molar mass

0.153 = Mass of fluorine / 19

Cross multiply

Mass of fluorine = 0.153 × 19

Mass of fluorine = 2.91 g

Thus, the mass of fluorine is 2.91 g

Learn more about mass:

https://brainly.com/question/21940152

#SPJ1

Answer:

Ka  → 1.5×10⁻⁵

Option E. None of the above

Explanation:

We propose the reaction of equlibrium

Weak ac.H +  H₂O ⇄  Weak ac⁻  +  H₃O⁺

Initially we have 0.30 moles of acid in 1 L

In equilibrium we would have:

Weak ac.H +  H₂O ⇄  Weak ac⁻  +  H₃O⁺

0.30 - x                               x               x

We have the pH, where we can obtanined the x, the [H₃O⁺] in the equilibrium.

pH = - log [H₃O⁺] → [H₃O⁺] = 10^⁻(pH)

[H₃O⁺] = 10⁻²'⁶⁷ = 2.14×10⁻³

So let's determine the concentration of the acid, in the equilibrium

0.30 - 2.14×10⁻³ = 0.29786 → [Weak ac.H]

2.14×10⁻³ →  [H₃O⁺] = Conjugate base (Weak ac.⁻)

Let's make the expression for Ka

Ka = [Weak ac.⁻] .  [H₃O⁺]  / [Weak ac.H]

Ka = x² / 0.30 - x

Ka = (2.14×10⁻³)² / 0.29786 → 1.5×10⁻⁵

1) We could use the bromine water test to tell the difference between the alkane and the alkene

2) We can use a detergent to wash a cloth that is contaminated by oil.

The term alkane has to do with a hydrocarbon that is composed of only a straight chain compound there are no multiple bonds in the alkane molecule and this is the difference between the alkane and the alkene. The alkene is composed of double bonds. The alkene compounds are able to decolorize bromine water while the alkanes can not.

If you have a contaminated cloth, you can be able to wash it by the use of a detergent because it is able to lift off the grease or oil by the use of the hydrophobic tail of the detergent.

Learn more about alkane:https://brainly.com/question/18522493

#SPJ1

Answer: Be sure to show all work and express your answer in the appropriate number of significant figures. a. 12.0 m² to nm? b. The mass of a proton is 1.67 x 10-27 kg.

Explanation:

Answer:

Explanation:

Here, we want to get the number of moles of ammonia that could be produced from 5 moles of hydrogen

From the balanced equation of reaction, 3 moles of hydrogen produced 2 moles of ammonia

5 moles of hydrogen will produce x moles of ammonia

Mathematically:

Answer:

CH4 (g) and O2 (g) are both in the gaseous state, while CO2 (g) and H2O (g) are also in the gaseous state.

In the above reaction, the reactants are in the gaseous state, and the products formed are also in the gaseous state.

Every compound in a chemical reaction can be in any state of matter like solid, liquid, or gas. In the reaction of methane and oxygen, the initial state of the reactants is in the gaseous form. The chemical reaction of methane and oxygen is given by the equation CH4 (g) + 2 O2 (g) -> CO2 (g) + 2 H2O (g).Here, methane and oxygen are the reactants, and carbon dioxide and water are the products. Methane (CH4) and oxygen (O2) react together in the presence of a spark or heat to produce carbon dioxide (CO2) and water (H2O).In the reaction, the methane gas combines with oxygen gas, which causes the release of heat energy and forms carbon dioxide gas and water vapor. Methane gas is a colorless and odorless gas that burns cleanly and is one of the primary components of natural gas.

The oxygen gas required for the reaction is available in the atmosphere. Carbon dioxide is a colorless gas with a faint odor and taste and is a significant component of the Earth's atmosphere. Water is a colorless, odorless, and tasteless liquid that is essential to life.The state of matter of every compound in a chemical reaction can change depending on the conditions in which the reaction occurs. For instance, a substance that is in the solid state at a lower temperature may melt into a liquid or boil into a gas at a higher temperature. Similarly, a liquid may freeze into a solid or vaporize into a gas under different conditions.

for such more questions on reactants

https://brainly.com/question/26283409

#SPJ8

Answer:

1. a part of the soil that contains decayed plant or animal matter

2. erosion

3. topsoil

Explanation:

Hope this helped :)

There are numerous ways to determine whether lead is present in an ore. Atomic absorption spectroscopy is a popular approach. With this method, an ore sample is dissolved in acid and then atomized in a flame or plasma.

The sample's atoms will absorb light at particular wavelengths that are peculiar to the element under investigation. The amount of light absorbed can be used to calculate how much lead is present in the sample. Inductively coupled plasma mass spectrometry and X-ray fluorescence spectroscopy are further techniques. It is crucial to remember that these procedures call for specialized tools and training, thus they ought to only be carried out in a lab by qualified experts.

To know more about spectrometry, here

brainly.com/question/31075363

#SPJ1

Answer:

3.383x10⁻³ micromoles of HgCl

Explanation:

The chemist adds 170mL of a 1.99x10⁻⁵mmol/L Mercury (I) chloride, HgCl.

The solution contains 1.99x10⁻⁵milimoles of HgCl in 1L. That means in 170mL = 0.170L there are:

0.170L × (1.99x10⁻⁵milimoles HgCl / L) = 3.383x10⁻⁶ milimoles of HgCl.

Now, in 1milimole you have 1000 micromoles. That means in 3.383x10⁻⁶ milimoles of HgCl you have:

3.383x10⁻⁶ milimoles of HgCl ₓ (1000micromoles / 1milimole) =

Answer:

24 grams of FeF3

Explanation:

Answer:

C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g)

Explanation:

Acetylene undergoes deprotonation reaction to form acetylide. Hence, any base having conjugate acid with value above 25 can deprotonate acetylene. Hence, option A and C are correct.

NaOH + HCCH NaCCH + Sodium Acetylide, Hydroxide is certainly not a sufficient base to deprotonate acetylene. In case of corrosive base responses, the harmony deceives the side of the more fragile corrosive.

To decide if a given base will be adequate to deprotonate a particular corrosive, contrast the form of base and the first base. A form base is always shaped whereas the corrosive is deprotonated by the base.

Hence, the compounds which pKa values are more than 25 can deprotonate acetylene.

Learn more about pKa values from the link given below.

https://brainly.com/question/11732200

#SPJ4

Answer:

electrons

Explanation:

Of the three subatomic particles, electrons are most involved in forming chemical bonds.

The question is incomplete, the complete question is;

Assign an oxidation number to each element in the reaction.

CO(g) + 2H2(g) → CH3OH(g)

In CO, the oxidation number of C is _, and that of O is _.

In H2, the oxidation number of H is _.

In CH3OH, the oxidation number of C is _, that of O is _, and that of H is _.

Answer:

See explanation

Explanation:

If we look at the reaction, in CO, C is +2 while O is -2. Remember  that the sum of all the oxidation numbers in a compound must be zero.

The oxidation number of atoms in a diatomic molecule is zero hence in H2, H is zero.

We already know the oxidation states of oxygen and hydrogen in CH3OH to be -2 and +1 respectively. Carbon is;

x + 4(1) + (-2) = 0

x + 2 =0

x = -2

Hence in CH3OH, carbon has an oxidation state of -2.

Answer:

ok, here is your answer

Explanation:

i am going to solve this problem by using the ICE table method which is an easy method to determine the pH of a weak base with the given data of the problem.Given:Initial volume of NH3 solution (Vi) = 75.0 mLInitial concentration of NH3 solution (Ci) = 0.200 MInitial moles of NH3 solution (Ni) = Ci x Vi = 0.200 M x 75.0 mL = 0.0150 molesKb = 1.8 x 10^-5Moles of HNO3 added (n) = 0.500 M x 17.0 mL = 0.00850 molesVolume of NH3 solution after the addition of HNO3 (Vf) = 75.0 mL + 17.0 mL = 92.0 mLConcentration of NH3 solution after the addition of HNO3 (Cf) = Ni / Vf = 0.0150 moles / 92.0 mL = 0.163 MTo find the pH after the addition of 17.0 mL of HNO3, we need to use the ICE table method.ICE table method:Initial: NH3 + H2O ⇌ NH4+ + OH-Change: -x 0 +x +xEquilibrium: 0.0150 - x 0 x xKb = [NH4+][OH-] / [NH3]1.8 x 10^-5 = x^2 / 0.163Solving for x, x = 0.00171 M[OH-] = 0.00171 M[OH-] = Kw / [H3O+] = 1.0 x 10^-14 / [H3O+][H3O+] = 5.85 x 10^-12pH = -log[H3O+]pH = -log(5.85 x 10^-12)pH = 11.23Therefore, the pH after the addition of 17.0 mL of HNO3 is approximately 11.23.

Because digital data can be lost so easily, Atomic Theory it is essential for photographers to have at least 1 backup of each shot they intend to save for the long term.

Higher Initial Cost: Compared to roll film cameras, greater, fully-loaded digital cameras can be a little more expensive. Battery Consumption: With digital cameras, the battery runs out more quickly. This necessitates having a few spare batteries on hand, especially while taking numerous photos.

The process of finding solutions is iterative: Start by formulating theories for potential solutions to your problem. Create a how map by structuring these hypotheses. Next, prior to performing the actual testing, choose which hypothesis you wish to test first.

To know more about Atomic Theory visit:

https://brainly.com/question/28853813

#SPJ1

Answer:

telophase

Explanation:

Answer:

Explanation:

lipids

Glycerophospholipids are by far the most abundant lipids in cell membranes. Like all lipids, they are insoluble in water, but their unique geometry causes them to aggregate into bilayers without any energy input.

Answer:

If it's cold it's going to be E, and if it's the hottest it's going to be C.

Explanation:

Answer:

Wadding is a disc of material used in guns to seal gas behind a projectile or to separate powder from shot. ... Wadding for muzzleloaders is typically a small piece of cloth, or paper wrapping from the cartridge.

Explanation:

The significance of the even number of protons and neutrons, in this case, is that it gives stability to the nucleus of an atom.

Protons are the positively-charged sub-atomic particle found in the nucleus of an atom. Protons are responsible for the mass of the atom of an element.

Protons exert a positive attractive force on the electrons found in orbitals around the atom.

Neutrons are neutral particles that are found together with the protons in the nucleus of an atom.

Neutrons together with protons account for the mass of an atom. Although neutrons are neutral, they contribute to the strong nuclear force that holds the nucleus of an atom together.

The correct ratio of protons and neutrons in the nucleus of an atom is required for the stability of the nucleus of an atom.

When the ratio of the protons and neutrons increases above 1 : 1.5, the nucleus of the atom becomes unstable.

Learn more about protons and neutrons at: https://brainly.com/question/28476164

#SPJ1

The volume of a 0.781 M KOH solution required to make 3.73 L of a solution is 6.012 × 10-¹²L.

The volume of a solution can be calculated using the following formula:

CaVa = CbVb

Where;

According to this question, a 0.781 M KOH solution is required to make 3.73 L of a solution with pH of 11.90.

The concentration of a solution with a pH of 11.90 is 0.000000000001259 or 1.259 × 10-¹²M.

0.781 × Va = 1.259 × 10-¹² × 3.73

0.781Va = 4.696 × 10-¹²

Va = 6.012 × 10-¹²L

Therefore, 6.012 × 10-¹²L is the volume of the solution.

Learn more about volume at: https://brainly.com/question/861096

#SPJ1

Answer:

energy

Explanation:

Answer:

Explanation:

40/ 180.2 x (-16 / 1 mole glucose)=-3.6 KJ

Answer:

35 gm

Explanation:

What is mass of 0.6 mol C4H10

C4H10 has a molar nass of

(4X12) (10

X 1) = 48 + 10 8

so 1 mole of C4H10 is 58 gm

so 0.6 moles is

(0.6 X58) = 35 gm

To determine the total pressure of a gas mixture that contains oxygen (O2), you need to know the partial pressure of the oxygen gas and the partial pressures of the other gases in the mixture. The total pressure of a gas mixture is equal to the sum of the partial pressures of all the gases in the mixture. This is known as Dalton’s Law of Partial Pressures. Can you provide more information about the gas mixture, such as the partial pressures or mole fractions of the gases in the mixture?

Answer: is that a question or

Explanation:

Answer:

its c

Explanation: