How many ng are there 5.27x10-13 kg

A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.

Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.

Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.

Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.

Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.

The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.

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The mass of nitrogen, N₂ that contains 1.81×10²³ molecules is 8.42 g

From Avogadro's hypothesis,

6.02×10²³ molecules = 1 mole of nitrogen, N₂

But

1 mole of nitrogen, N₂ = 28.02 g

Thus,

6.02×10²³ molecules = 28.02 g of nitrogen, N₂

With the above information, we can obtain the mass of nitrogen, N₂ that contains 1.81×10²³ molecules as follow:

6.02×10²³ molecules = 28.02 g of nitrogen, N₂

Therefore,

1.81×10²³ molecules = (1.81×10²³ × 28.02) / 6.02×10²³

1.81×10²³ molecules = 8.42 g of nitrogen, N₂

Thus, we can conclude that the mass of nitrogen, N₂ is 8.42 g

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Explanation:

yellow and slick

40 + 140 = 180 kg of water and carbon dioxide were created in total when gasoline burns.

An average gasoline tank holds 13 to 16 gallons. For instance, the fuel capacity of a Ford Focus is 13.5 gallons, that of an Elantra is 14, and that of a Mazda 3 ranges from 14.9 to 15.9 gallons, depending on the model.

Mass of gasoline plus mass of oxygen equals the combined mass of carbon dioxide and water produced.

combined mass of the water and carbon dioxide produced = 40 + 140 = 180 kg The chemical reaction will appear as follows:

the following equation: fuel + oxygen + carbon dioxide + water + heat

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0.065 moles are there in 2.6 grams of Argon.

What is moles?

Moles, in chemistry, are a measure of the amount of a substance. One mole is equal to 6.022 x 10^23 particles or molecules of that substance. This number is known as Avogadro's number. Moles are used to measure the amount of a substance because it is easier to work with than counting individual particles or molecules. For example, it is easier to work with the number of moles of a substance than to count the individual atoms, molecules, or ions.

No. of moles =given mass/molar mass

Or,

n=w/m ______ (1)

So in this question we are given the value of w= 2.6 g

Now, the molar mass of argon is 39.948 g/mol

m=39.948 g/mol

So, substituting these values in equation (1) we get,

n= 2.6/ 39.948 = 0.065 mol

Therefore, 0.065 moles are in 2.6 grams of Argon.

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The equilibrium pressure of the nitrogen oxide is given as 4 atm.

Kp is the equilibrium constant for a chemical reaction in terms of partial pressures. It is defined as the ratio of the product of the partial pressures of the products raised to their stoichiometric coefficients to the product of the partial pressures of the reactants raised to their stoichiometric coefficients

We know that;

Kp = \(pNO_{2} ^2/pN_{2} ^2 . pO_{2}\)

\(3.2 * 10^-28 = (2x)^2/(3.21 - 2x) (6.21 - x)\\3.2 * 10^-28 = 4x^2/19.9 - 3.21x - 12.42x + 2x^2\\3.2 * 10^-28(19.9 - 15.63x + 2x^2) = 4x^2\\6.4 * 10^-27 - 5 * 10^-27 x + 6.4 * 10^-28x^2 = 4x^2\\x = 4 atm\)

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Answer: B) 0.005 55 cm

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Answer: The pH of 0.10 M \(Cu(NO_{3})_{2}(aq)\) is 4.49.

Explanation:

Given: Initial concentration of \(Cu(H_{2}O)^{2+}_{6}\) = 0.10 M

\(K_{a} = 1.0 \times 10^{-8}\)

Let us assume that amount of \(Cu(H_{2}O)^{2+}_{6}\) dissociates is x. So, ICE table for dissociation of  \(Cu(H_{2}O)^{2+}_{6}\)  is as follows.

                               \(Cu(H_{2}O)^{2+}_{6} \rightleftharpoons [Cu(H_{2}O)_{5}(OH)]^{+} + H_{3}O^{+}\)

Initial:                       0.10 M                       0                       0

Change:                    -x                              +x                      +x

Equilibrium:           (0.10 - x) M                    x                        x

As the value of \(K_{a}\) is very small. So, it is assumed that the compound will dissociate very less. Hence, x << 0.10 M.

And, (0.10 - x) will be approximately equal to 0.10 M.

The expression for \(K_{a}\) value is as follows.

\(K_{a} = \frac{[Cu(H_{2}O)^{2+}_{6}][H_{3}O^{+}]}{[Cu(H_{2}O)^{2+}_{6}]}\\1.0 \times 10^{-8} = \frac{x \times x}{0.10}\\x = 3.2 \times 10^{-5}\)

Hence, \([H_{3}O^{+}] = 3.2 \times 10^{-5}\)

Formula to calculate pH is as follows.

\(pH = -log [H^{+}]\)

Substitute the values into above formula as follows.

\(pH = -log [H^{+}]\\= - log (3.2 \times 10^{-5})\\= 4.49\)

Thus, we can conclude that the pH of 0.10 M \(Cu(NO_{3})_{2}(aq)\) is 4.49.

Answer:

The answer for the final volume is essentially the same if we converted the 1,775 torr to atmospheres: Using Boyle's law: (1.56 atm)(7.02 L) = (2.335 atm) × V f; 02 L) 2 . 336 at

Answer:

3.2877204

Explanation:

The energy of the photon of light can be obtained as 6.27 * 10^-20 J.

We know that a photon has to to do with a particular unit of light. We know that light can be said to be composed of very tiny corpuscles and these corpuscles of light is what we call the photon of the light.

We can be able to us the equation that is derived by Max Plank to be able to get the value of the energy of the photon of light. Now we know that a photon of light can have an energy that is able to be obtained by;

E = hf

h = Plank's constant

f = Frequency

Then;

E = 6.6 * 10^-34 Js * 9.5 * 10^13 Hz

= 6.27 * 10^-20 J

Thus as we can see from the parameters in the question, the energy of the photon is 6.27 * 10^-20 J.

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Answer:

The atomic is 6, the mass number is 12

Explanation:

The element being described is Carbon.

The number of protons in the nucleus of an atom is called its atomic number, Z.

The number of protons pluss the number of neutronsin the nucleus of an atom gives the atom's mass number, A.

Answer:

9.43 L Br₂ (g)

Explanation:

First, write a balanced reaction equation. Then use dimensional analysis to convert from grams of aluminum chloride to moles of aluminum chloride (with molar mass from the periodic table), from moles of aluminum chloride to moles of bromine gas (using the balanced equation), and from moles of bromine gas to liters of bromine gas (remember at STP, 1 mol = 22.4 L). See the attached image for the work out. Finally, account for sig figs to get 9.43 L of bromine gas

The balanced redox reaction in the chemical reaction is given below:

40H2S + 48H+ + 16MnO4¯ ---> 5S8 + 16Mn2+ + 64H2O

Balancing the redox reaction:

Solution:

1) Half-reactions:

H2S ---> S8

MnO4¯ ---> Mn2+

2) Balance:

8H2S ---> S8 + 16H+ + 16e¯

5e¯ + 8H+ + MnO4¯ ---> Mn2+ + 4H2O

3) Make the number of electrons equal (note that there are no common factors between 5 and 16 except 1):

40H2S ---> 5S8 + 80H+ + 80e¯ <--- factor of 5

80e¯ + 128H+ + 16MnO4¯ ---> 16Mn2+ + 64H2O <---

factor of 16

4) Thus, the final answer is given below;

40H2S + 48H+ + 16MnO4¯ ---> 5S8 + 16Mn2+ + 64H2O

Oxidation-reduction can simply be defined as a special type of chemical reaction in which the oxidation states of the substrate change.

So therefore, the balanced redox reaction in the chemical reaction is given below:

40H2S + 48H+ + 16MnO4¯ ---> 5S8 + 16Mn2+ + 64H2O

Complete question:

Balance the following redox reaction:

MnO4¯ + H2S ---> Mn2+ + S8

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Ionic bonding is a type of chemical bond that occurs when electrons are transferred between atoms to form ions. The resulting ions are attracted to each other by their opposite charges and form an ionic compound. Here is a summary of the information you provided:

Element: Na (sodium)

Number of valence electrons: 1

Dot structure: Na

Transfer of electrons: Na loses 1 electron to become Na+

Ions formed: Na+ and Cl-

Compound formed: Sodium chloride (NaCl)

Name of compound: Salt

Element: F (fluorine)

Number of valence electrons: 7

Dot structure: F

Transfer of electrons: F gains 1 electron to become F-

Ions formed: F- and Mg2+

Compound formed: Magnesium fluoride (MgF2)

Element: O (oxygen)

Number of valence electrons: 6

Dot structure: O

Transfer of electrons: O gains 2 electrons to become O2-

Ions formed: Ba2+ and O2-

Compound formed: Barium oxide (BaO)

Element: Li (lithium)

Number of valence electrons: 1

Dot structure: Li

Transfer of electrons: Li loses 1 electron to become Li+

Ions formed: Li+ and Cl-

Compound formed: Lithium chloride (LiCl)

Element: P (phosphorus)

Number of valence electrons: 5

Dot structure: P

Transfer of electrons: P gains 3 electrons to become P3-

Ions formed: Al3+ and P3-

Compound formed: Aluminum phosphide (AlP)

Element: N (nitrogen)

Number of valence electrons: 5

Dot structure: N

Transfer of electrons: N gains 3 electrons to become N3-

Ions formed: Al3+ and N3-

Compound formed: Aluminum nitride (AlN)

The element that has chemical properties most similar to sodium is d. rubidium.

What is rubidium?

Rubidium is in the same group (group 1) as sodium in the periodic table and has similar chemical properties, such as reactivity with water and the tendency to form ionic compounds with halogens. Magnesium, oxygen, and phosphorus are not in the same group as sodium and have different chemical properties.

What is periodic table?

The periodic table is a tabular display of all known chemical elements, arranged according to their atomic structure and properties. It is arranged in rows and columns, with elements placed in order of increasing atomic number, which is the number of protons in an atom's nucleus. The periodic table is a powerful tool for predicting the chemical behavior of elements and for understanding the relationships between different elements. It is used extensively in chemistry, physics, and other sciences to help understand the properties and behavior of different elements, and to guide research and development in many different fields.

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Answer:

Based on the Modern Periodic table, there is an increase in the electropositivity of the atom down the group as well as increases across a period. On comparing the electropositivities of the mentioned oxides central atom, it is seen that Ca is most electropositive followed by Al, Si, C, P, and S is the least electropositive.  

With the decrease in the electropositivity, there is an increase in the acidity of the oxides. Thus, the increasing order of the oxides from the least acidic to the most acidic is:  

CaO > Al2O3 > SiO2 > CO2 > P2O5 > SO3. Hence, CaO is the least acidic and SO3 is the most acidic.  

Since acidity increases across a period from left to right, and decreases down a group, the oxides can be ranked from the least acidic to the most acidic as follows:

\(\mathbf{CaO < Al_2O_3 < SiO_2 < CO_2 < P_2O_5 <SO_3}\)

Note the following:

Using the periodic table diagram given in the attachment below, we can rank the given oxides according to their increasing acidity.

Therefore, since acidity increases across a period from left to right, and decreases down a group, the oxides can be ranked from the least acidic to the most acidic as follows:

\(\mathbf{CaO < Al_2O_3 < SiO_2 < CO_2 < P_2O_5 <SO_3}\)

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Answer:

Deductive reasoning  (Brainliest please)

Explanation:Deductive reasoning begins with a general principle and a prediction based on this principle; the prediction is then tested, and a specific conclusion can then be drawn. The first step in the process of inductive reasoning is making specific observations.

Answer:

one to two inches (three to five centimeters) per year.

Explanation:

Answer:

1 to 2 inches (3 to 5 centimeters) per year

Explanation:

It depends on what plates your talking about, but in general, they move apart anywhere from 1 to 2 inches (3 to 5 centimeters) per year.

Specifically, though, The Arctic Ridge has the slowest rate (less than 2.5 cm/yr), and the East Pacific Rise near Easter Island, in the South Pacific about 3,400 km west of Chile, has the fastest rate (more than 15 cm/yr).

Answer:

Ionic bond.

Explanation:

Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.

Answer:

So since there are 16 electrons in sulfur and the first layer of electrons in an orbital shell has a max of two, the first layer will be full. The second layer has a max of 8, so that will also be full. The third layer also has a max of 8 but will not get filled up since there are only 6 electrons left. These are the valence electrons. The orbital diagram will usually look like this:

( O = nucleus, . o = electron)

   o o

o  O  o o

     o

Answer:

the water cycle

Explanation:hope i helped love yall

Answer:

Freezing, boiling, and evaporation are all examples of physical change.

Explanation:

Answer:

0.517

Explanation:

HCN + NaOH → NaCN + H2O [balanced as written]

(35.4 mL) x (0.268 M NaOH) x (1 mol HCN / 1 mol NaOH) / (18.35 mL HCN) = 0.517 M HCN

Answer: 0.517

Explanation:

What is one advantage of wind and hydroelectric power?

A. They are effective in any type of environment.

B. Neither harms wildlife.

C. Neither produces pollutants.

D. Both are inexpensive.

Explanation:

one of the qnswer is flood control, irrigation support, and clean drinking water

Answer:

A salt is a neutral ionic compound. Let's see how a neutralization reaction produces both water and a salt, using as an example the reaction between solutions of hydrochloric acid and sodium hydroxide. The overall equation for this reaction is: NaOH + HCI → H2O and NaCl.

Explanation:

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The standard reduction potential of the Cr³+/Cr electrode is -0.46V. None of the option is correct.

To determine the standard reduction potential of the Cr³+/Cr electrode, we can use the Nernst equation, which relates the standard reduction potential to the cell potential under non-standard conditions. The Nernst equation is given by:

E = E° - (0.0592/n) * log(Q)

where E is the cell potential, E° is the standard reduction potential, n is the number of electrons transferred in the half-reaction, and Q is the reaction quotient.

In this case, we have the standard potential of the cell as −0.60V. We know that the standard reduction potential of the Sn/Sn²+ electrode is -0.14V. Therefore, the reduction potential of the Cr³+/Cr electrode can be calculated as:

E = -0.60V - (-0.14V)

E = -0.60V + 0.14V

E = -0.46V

Therefore, the standard reduction potential of the Cr³+/Cr electrode is -0.46V.

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Answer:

True

Explanation: