A petroleum refinery is producing the four products shown in the table. The table also shows the state of matter at room temperature of each of the substances. All of these compounds are molecular compounds consisting of only hydrogen and carbon. Which of the following products is likely to have the highest molecular weight? A. Natural gas   B. Gasoline   C. Jet fuel   D. Paraffin wax

Answer:

1H2 + O2 -> 2Н2O.

combination reaction.

When Magnesium comes in contact with Oxygen, it reacts with Oxygen causing a layer of Magnesium Oxide on the metal. If Magnesium is burnt, it will cause a bright white light creating Magnesium Oxide.

The initial appearance of Magnesium is a ribbon with a layer of Magnesium Oxide.

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Answer:

Mass = 0.37 g

Explanation:

Given data:

Number of moles of sulfur = 11.9 mol

Mass of sulfur in 11.9 mol = ?

Molar mass of sulfur = 32.06 g

Solution:

Number of moles = mass/molar mass

by putting values,

11.9 mol = mass/ 32.06 g/mol

Mass = 11.9 mol × 32.06 g/mol

Mass = 0.37 g

Answer:

Explanation:

i don't quite know what the question is here, but...

6+12=18  or Amanda's ball is heavier so the ball would have a hard time, again I don't know what the real question is here

Answer:

Amanda’s ball is heavier so it’s harder throw

Explanation:

Claim: The reason why Amanda was having such a hard time was because she choose a heavier ballEvidence: Jason had no problem with his ball which was 6lb but Amanda was struggle with double the weight of Jason’s ball weight which was 12lb having more mass.Reasoning: Jason picked up a ball with less mass weighting at 6 pounds but because of this his ball was much easier to roll. This was due to Newton’s second law since he had such a lighter ball it was easier for him to through. Newton’s second law is force equal mass times acceleration (f=ma). The opposite could be said about Amanda her ball was so heavy that’s why it was harder to throw. When the mass of Amanda's ball is thrown onto the alley it goes slower because it has much more mass to weight it down, giving the ball less acceleration. 

Answer:

H2SO4(acid), NaOH(base)

Explanation:

Gas legislation

PV = nRT

where P is atmospheric pressure

Volume (measured in litres)

The number of moles is n.

R = gas constant (0.0821 L atm/(mol K))

Temperature (in Kelvin) equals T.

We need to rearrange the ideal gas law to solve for n:

n = PV / RT

To use this equation, we need to know the pressure, temperature, and volume of the carbon dioxide.

0.002355 moles of carbon dioxide are equal to 235.5 litres of the petrol. As a result, 0.002355 moles of carbon dioxide are equivalent to 0.053 litres.

This is because 1 mole of carbon dioxide is equal to 22.4 litres. This indicates that there are 0.002355 moles of carbon dioxide for every 0.053 litres of carbon dioxide.

Therefore, there are 0.002355 moles of carbon dioxide in 235.5 litres of carbon dioxide.

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Electrons moving in a circle would be accelerating, would lose energy, and would therefore not be able to maintain their orbits.

Atomic models are designed to determine the nature of the atom. There have been several atomic models whose ultimate aim have been to underscore the interaction between the particles that compose the atom.

The atomic models include;

The main problem of the Planetary system model (Rutherford model) of the atom is that electrons moving in a circle would be accelerating, would lose energy, and would therefore not be able to maintain their orbits.

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Answer:

Is this an actual question that you had for school?

Explanation:

Answer:

3/5. Its still really stressful but at least it's better than 2020.

Answer:Condensation

Explanation:I just took it:/

The phase changes occur when the substances undergoes transition between different states of matter. All phase changes involve either gain or release of energy. Here condensation involves a release of energy. The correct option is B.

The process through which the physical state of matter changes from the gaseous phase into the liquid phase is defined as the condensation. The condensation occurs when water vapor in the air changes into liquid water when it comes in contact with a cooler surface.

During condensation molecules in the gaseous state release energy to change state to a liquid. The opposite of the condensation is the evaporation. At high pressure and low temperature any gas can condense.

Condensation is also important to the water cycle as it is responsible for the formation of clouds and maintains water balance.

Thus the correct option is B.

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4.29 g, or % of the reaction's yield. Yield in synthesis reaction percent: 85%. Explanation: C2H5OH+3O22CO2+3H2O is the balanced equation.

Multiply the molal mass of water by the number of moles. 2 + 16 = 18 g/mol is the molar mass. This yields 0.834 moles H2O x 18 g/mol when multiplied by the end result. 15 grams of water equal one gram of H2. For this experiment, 15 grams of water should be produced theoretically.

The percentage and theoretical yield are multiplied together to arrive at the simple calculation for actual yield.

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Answer:

a) (I) and (iii) only

Explanation:

Because different plastics have different size.

Answer:

Coenzyme Definition

A coenzyme is an organic non-protein compound that binds with an enzyme to catalyze a reaction. Coenzymes are often broadly called cofactors, but they are chemically different. A coenzyme cannot function alone but can be reused several times when paired with an enzyme.

Functions of Coenzymes

An enzyme without a coenzyme is called an apoenzyme. Without coenzymes or cofactors, enzymes cannot catalyze reactions effectively. The enzyme may not function at all. If reactions cannot occur at the normal catalyzed rate, then an organism will have difficulty sustaining life.

When an enzyme gains a coenzyme, it then becomes a holoenzyme or active enzyme. Active enzymes change substrates into the products an organism needs to carry out essential functions, whether chemical or physiological. Coenzymes, like enzymes, can be reused and recycled without changing reaction rates or effectiveness. They attach to a portion of the active site on an enzyme, which enables the catalyzed reaction to occur. When an enzyme is denatured by extreme temperature or pH, the coenzyme can no longer attach to the active site.

Types of Enzymes

Cofactors are molecules that attach to an enzyme during chemical reactions. In general, all compounds that help enzymes are called cofactors. However, cofactors can be broken down into three subgroups based on chemical makeup and function:

Coenzymes

These are reusable non-protein molecules that contain carbon (organic). They bind loosely to an enzyme at the active site to help catalyze reactions. Most are vitamins, vitamin derivatives, or form from nucleotides.

Explanation:

CH4+8/2Cl2—>CCl4+4HCl

that is,1molecule of methane+8/2 molecules of dichlorine—>1molecule of carbon tetrachloride+4molecules of hydrogen chloride

Due to the trend of boiling points, the optimal order for elements within a group going from top to bottom is \(A, X_o, Z_w\).

From the given information we can see that the boiling points of the elements decrease from A to Xo to Zw. The highest boiling point (350°C) is of element A, followed by Xo (215°C) and Zw (285°C). We arrange the components in decreasing order of boiling points to get A, Xo and Zw.

It is important to remember that in this situation, the alphabetical order of the elements and their atomic weights are irrelevant considerations. A reasonable basis for arranging the components within the system is provided by the trend in boiling points.

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I know number 1 is 58.04 g/mol

Answer:Many nocturnal animals have a mirror-like layer, called the tapetum, behind the retina, which helps them make the most of small amounts of light.

Explanation:

Answer:

1) (5 moles of calcium bromide) x 2 / 1 = 10 moles

2) (2.00 moles of calcium bromide) = 2.00 moles of calcium sulfate

so (2.00) x (136.1 g/mol) = 272.2 g

3) (845 grams of calcium sulfate) /  136.14 g/mol = 6.21 moles

6.21 moles of calcium sulfate = 6.21 moles of calcium bromide

(6.21 moles of calcium bromide) x 199.89 g/mol = 1241.32 g

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:

In Explanation

Explanation:

The empirical formula of a compound is the simplest whole-number ratio of atoms in a molecule. To find the empirical formula of a compound that contains 0.126 mol CI and 0.44 mol O, we can divide the number of moles of each element by the smallest number of moles among all the elements present. This will give us the simplest ratio of atoms in the compound.

First, we can divide the number of moles of CI by the number of moles of O:

CI/O = 0.126 mol / 0.44 mol = 0.2857

This means that for every atom of oxygen, there are 0.2857 atoms of chlorine.

To simplify this ratio, we can multiply both sides of the equation by the smallest whole number which will make the ratio a whole number. In this case, we can multiply by 4, so the ratio becomes:

CI/O = 4*0.2857 = 1.1428

So the simplified ratio of atoms in the compound is 1 atom of chlorine for every 1 atom of oxygen. The empirical formula is ClO

Answer:

Cl2O7

Explanation:

Didn't round ratio.

Answer:

a triple bond posana pi maka tulong

Answer: NaOH can be classified as a strong base considering the ions it forms when it dissociates and its level of dissociation. The best option to answer the question is letter C.

Explanation:

The question requires us to choose, among the options given, which one best describes sodium hydroxide (NaOH), knowing that this compounds completeley dissociates into positive and negative ions.

When NaOH dissociates, the ions Na+ and OH- are formed, according to the following dissociation reaction:

Since the dissociation of NaOH forms anions OH-, we can say it is a base. Also, since the dissocation of NaOH into its ions is complete, we can say that it is a strong base.

Therefore, NaOH can be classified as a strong base considering the ions it forms when it dissociates and its level of dissociation. The best option to answer the question is letter C.

A chemical process known as an oxidation-reduction (redox) reaction occurs when electrons are exchanged between two or more species.

Thus, This happens between two distinct elements in the majority of redox reactions. The element that loses electrons is said to be the reducing agent and is oxidized.

The oxidizing agent is the element that obtains electrons and is reduced. These oxidation/reduction reactions in acidic or basic solution can be expressed as balanced half-reactions. The total balanced redox reaction equation is created by adding these balanced half-reactions.

This is an equation for a redox reaction. We must recognize changes in oxidation states that take place between elements in order to balance the equation.

Thus, A chemical process known as an oxidation-reduction (redox) reaction occurs when electrons are exchanged between two or more species.

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The body of scientific knowledge is based on different Observations (Option C).

Observations in the scientific method are fundamental because it is the first step to raising scientific questions that may be explained through plausible hypotheses. Subsequently, hypotheses must be tested by experimental procedures.

In conclusion, the body of scientific knowledge is based on different Observations (Option C).

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The compound contains approximately 0.1486.02210^23 carbon atoms, or about 8.9*10^22 carbon atoms. Thus, the number of carbon atoms in the compound is approximately 15.

The molecular formula of a compound is a representation of the number and types of atoms that constitute one molecule of that compound.

To solve this problem, we can use the isotopic distribution of carbon in the compound to determine the molecular formula. The relative abundance of each isotope is related to the number of atoms of that isotope in the molecule.

Let's assume the molecular formula of the compound is CxHy, where x is the number of carbon atoms and y is the number of hydrogen atoms. We can use the following equation to relate the relative abundance of each isotope to the number of carbon atoms:

(0.9893)x(0.4475) + (0.0107)x(0.02904) = 0.02904

Simplifying this equation, we get:

0.443x + 0.00031268x = 0.02904

0.44331268x = 0.02904

x = 0.06556/0.44331268

x = 0.148

Therefore, the compound contains approximately 0.1486.02210^23 carbon atoms, or about 8.9*10^22 carbon atoms. Thus, the number of carbon atoms in the compound is approximately 15.

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The number of carbon atoms in the compound can be determined by calculating the ratio of C12 to C13 isotopes present.

Carbon atoms are the building blocks of life. They are the most abundant element in the human body and make up the molecules that create all living things. Carbon atoms are found in proteins, carbohydrates, and lipids, and are essential for the functioning of all living organisms. Carbon atoms are made up of six protons, six neutrons, and six electrons, and are the backbone of organic chemistry.

Since the relative abundances of C12 and C13 are 44.75% and 2.904% respectively, the ratio of C12 to C13 can be calculated as follows:

C12/C13 = (44.75/2.904) = 15.39

We can then compare this ratio to the natural abundance of C12 and C13, which is 98.93% and 1.07%, respectively.

If the ratio of C12 to C13 in the compound is equal to the natural abundance of these isotopes, then the number of carbon atoms in the compound must be 12.

C12/C13 = (98.93/1.07) = 92.52

Since the ratio of C12 to C13 in the compound is not equal to the natural abundance of these isotopes, then the number of carbon atoms in the compound must be 13.

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Answer:

False

Explanation:

Depends mostly on heating of the earths surface being uneven

It is false that global wind patterns have less to do with air temperature than local winds.

Local winds are those that blow over a small area. Local geography, such as proximity to an ocean, has an impact on them.

Monsoons and land and sea breezes are among them. Global winds occur in belts all over the world.

Temperature differences, particularly the difference in heating at the equator and poles, and the Earth's rotation determine the global atmospheric circulation pattern.

By transporting heat and water, winds shape regional climate and influence daily weather.

Global winds are winds that occur in belts that circle the globe. Global winds, like local winds, are caused by uneven heating of the atmosphere.

Because of the Coriolis effect, winds blow diagonally across the surface.

Thus, the given statement is false.

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Answer:

Carbon Hydrogen

Explanation:

I believe it means carbon (C) to one atom of hydrogen (H).

Answer:

8.279

Explanation:

The pH can be determined by hydrolysis of a conjugate base of weak acid at the equivalence point.

At the equivalence point, we have

\($n_{NaOH}=n_{HNO_2}$\)

           = 25.00 x 0.200

           = 5.00 m-mol

           = 0.005 mol

Volume of the base that is added to reach the equivalence point is

\($\frac{0.005}{1.00} \times 1000= 5.00 \ mL$\)

Number of moles of \($NO^-_{2}=n_{HNO_2}$\)

                                           = 0.005 mol

Volume at the equivalence point is 25 + 5 = 30.00 mL

Therefore, concentration of \($NO^-_{2}= \frac{5}{30}$\)

                                                        = 0.167 M

Now the ICE table :

            \($NO^-_2 + H_2O \rightarrow HNO_3 + OH^-$\)

I (M)       0.167                   0            0

C (M)         -x                      +x          +x

E (M)      0.167-x                  x           x

Now, the value of the base dissociation constant is ,

\($K_w=K_a \times K_b$\)            \($(K_w \text{ is the ionic product of water })$\)

\($K_b =\frac{K_w}{K_a}$\)

\($K_b =\frac{1 \times 10^{-14}}{4.6 \times 10^{-4}}$\)

    = \($2.174 \times 10^{-11}$\)

Base ionization constant, \($K_b = \frac{\left[HNO_2\right] \left[OH^- \right]}{\left[NO^-_2 \right]}$\)

\($2.174 \times 10^{-11}=\frac{x^2}{0.167 -x}$\)

\($x= 1.9054 \times 10^{-6}$\)

So, \($[OH^-]=1.9054 \times 10^{-6 } \ M$\)

pOH =- \($\log[OH^-]$\)

       = \($- \log(1.9054 \times 10^{-6} \ M)$\)

        =5.72

Now, since pH + pOH = 14

           pH = 14.00 - 5.72

                = 8.279

Therefore the ph is 8.279 at the end of the titration.

Titration is a chemical process used to determine the concentration of an unknown sample from the known sample. At the equivalence point, the pH is 8.279.

In titration, the point at which the titrant neutralizes the unknown analyte solution is called the equivalence point.

The moles of equivalence point of sodium hydroxide and nitrous acid are:

\(\begin{aligned}\rm n_{NaOH} &= \rm n _{HNO_{2}}\\\\&= 25.00 \times 0.200\\\\&= 0.005 \;\rm mol\end{aligned}\)

The volume of the added base is 5.00 mL.

The moles of nitrogen dioxide are 0.005 moles and the volume at the equivalence point is 30 mL.

The molar concentration of nitrogen dioxide will be, 0.167 M.

From the ICE table, the base dissociation constant is calculated as:

\(\begin{aligned}\rm K_{w} &= \rm K_{a} \times K_{b}\\\\\rm K_{b} &= \dfrac{1 \times 10^{-14}}{4.6 \times 10^{-14}}\\\\&= 2.174 \times 10^{-11}\end{aligned}\)

The ionization constant of the base is given as,

\(\begin{aligned}\rm K_{b} &= \rm \dfrac{[HNO_{2}][OH^{-}]}{[NO_{2}^{-}]}\\\\2.174 \times 10^{-11} &= \rm \dfrac{x^{2}}{0.167- x}\\\\&= 1.905 \times 10^{-6} \end{aligned}\)

Now, pOH is calculated as:

\(\begin{aligned} \rm pOH &=\rm - log [OH^{-}]\\\\&= \rm -log (1.905 \times 10^{-6})\\\\&= 5.72\end{aligned}\)

The pH of the titration is calculated as:

\(\begin{aligned} \rm pH + pOH &= 14\\\\\rm pH &= 14.00 - 5.72\\\\&= 8.279\end{aligned}\)

Therefore the pH is 8.27.

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The density of acetone is 0.79 g/ml. Therefore, the mass of acetone for 13.26 ml is the product of its volume and density that is,  10.47 g.

Density of substance is the measure of its mass per unit volume. It describes how closely its particles are packed. Density depends on the bond type, temperature and pressure.

Volume of the object is the space occupied by its particles. Volume can be expressed in L, ml, cm³, dm³ etc. Only solids and liquids has a definite volume and the volume of gases is that of the container.

Give that, volume of the object = 825  cm³

density =  13.6 g/cm³

Mass = volume × density

m = 13.26 ml  ×  0.79 g/ml = 10.47 g

Therefore, the mass of acetone  is 10.47 g.

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Considering the phase diagram, the state of matter that exists in area B is gas.

The correct option is A.

A phase diagram is a graphical representation that shows the conditions of temperature and pressure at which different phases or states of a substance exist.

The axes of a phase diagram typically represent temperature (usually on the horizontal axis) and pressure (usually on the vertical axis). The diagram is divided into regions that correspond to different phases, and the lines separating these regions represent phase boundaries.

The point where three phase boundaries meet is known as the triple point, which represents the temperature and pressure at which all three phases can coexist in equilibrium.

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