What is formed when two or more atoms are held together by covalent bonds?

Answers

Answer 1

Fusion (they get together)

Answer 2

Final answer:

A molecule is formed when two or more atoms are held together by covalent bonds. These bonds are based on the sharing of electron pairs between atoms. Water (H2O) is an example of a molecule formed through covalent bonding.

Explanation:

When two or more atoms are held together by covalent bonds, a molecule is formed. Covalent bonds are a type of chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs. An example of a molecule formed through covalent bonding is water (H2O), where one oxygen atom shares electron pairs with two hydrogen atoms.

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Related Questions

A molecule that is composed only of chains and rings of hydrogen and carbon is called a

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A molecule that is composed of carbon and hydrogen is called a hydrocarbon.

Give an example of a two phase mixture and describe how you would separate the substances

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A two phase mixture is a mixture of two different substances. for example, a soft drink ( liquid and gas). to separate these two substances, you could heat the liquid and then capture the carbon dioxide.Also this is a question you need to answer for yourself there is many answers.

Water and salt, you add them and mix. To separate you would boil the water, the salt would remain while the water would evaporate. Let me know if this helps.

Can the amount of sugar be measured in a liquid using a laser pointer and a prism?

Answers

The amount of sugar in a liquid can be measured using a laser pointer and a prism. Basically, you utilize Snell's Law:

n_i*sin(θi) = n_r*sin(θr), where,

n_i = index of refraction of the incident medium
n_r = index of refraction of the refractive medium
θi = angle of incidence
θr = angle of refraction

You make use of the laser pointer, prism, and sugar solutions in various known concentrations. You then graph the sugar concentration versus the angle of refraction. You can then determine the amount of sugar in a liquid after determining the angle of refraction of that unknown sugar solution.

Write the element symbol for the element with the abbreviated electron configuration [ne]3s23p2.

Answers

The answer is Si (Silicon)

What element has its 7 valence electrons in energy level 4 in s and p orbitals?

Answers

The answer to your question is the element (Br) because it has 35 in his atomic number.
1s2/2s2 2p6/ 3s2 3p6/4s2 4p6 3d9. or [Ar] 4s2 2p5 3d10.
i hope that is answering your question.

The wall of the flask is periodically rinsed with the previously boiled deionized water from the wash bottle. does this titrimetric technique result in an increase, a decrease, or have no effect on the reported acetic acid in the vinegar

Answers

This technique has no effect on the percent of acetic acid in the vinegar, as deionized water does not affect the number balance of H+ hydronium ions or OH- hydroxide ions. This is done just to make the endpoint reading easier.

Which was the limiting reactant: the zinc or the hydrochloric acid? Remember that the limiting reactant is completely consumed in a reaction and no new product is formed unless more of the limiting reactant is added.

Answers

Suppose you initially have equal amounts of the reactants: 1 g of zinc (65.38 g/mol) and 1 g of HCl (36.46 g/mol). The reaction would be:

Zn + 2 HCl → ZnCl₂ + H₂

Moles Zn: 1/65.38 = 0.0153 mol
Moles HCl: 1/36.46 = 0.0274 mol

Moles of HCl needed:
0.0153 mol Zn (2 mol HCl/1 mol Zn) = 0.0306 moles HCl needed

Since the available moles of HCl is lesser than the theoretical amount of HCl needed, then the limiting reactant is HCl in this reaction.

The limiting reactant can be determined by comparing the molar amounts to the stoichiometric ratios. For the given situations, HCl is the limiting reactant in cases (a) and (b), while Zn is the limiting reactant in case (c). This means that the reaction will stop when these reactants are completely consumed.

To determine the limiting reactant in a chemical reaction, we need to compare the molar amounts of the reactants to the stoichiometric ratios given in the balanced chemical equation. For the reaction between Zinc and Hydrochloric Acid: Zn + 2HCl → H₂ + ZnCl₂.

Situation (a): 12 atoms of Zinc and 8 molecules of HCl

According to the balanced equation, 1 atom of Zn reacts with 2 molecules of HCl. Therefore, 12 atoms of Zinc would require 24 molecules of HCl. Since only 8 molecules of HCl are available, HCl is the limiting reactant.

Situation (b): 3 moles of Zn and 4 moles of HCl

The balanced equation indicates that 1 mole of Zn reacts with 2 moles of HCl. Thus, 3 moles of Zn would require 6 moles of HCl. As there are only 4 moles of HCl, HCl is again the limiting reactant.

Situation (c): 40g of Zn and 56g of HCl

Converting the masses to moles: Molar mass of Zn is approximately 65.38 g/mol, so 40g of Zn is approximately 0.612 moles. Molar mass of HCl is approximately 36.46 g/mol, so 56g of HCl is approximately 1.54 moles. From the balanced equation, 0.612 moles of Zn would require 1.224 moles of HCl. Since there are 1.54 moles of HCl, Zn is the limiting reactant.

What is the transfer of energy by electromagnetic waves? A) radiation B)
conduction C) convection D) thermal energy

Answers

The best answer to your question would be B: radiation.
Goodluck

The answer I think it is

A. Radiation

The major portion of an atom’s volume is(based on the gold foil experiment)?

Answers

Empty space as proved by the gold foil experiment

The major portion of an atoms volume is made up of empty space

Distilled water has a hydronium ion concentration of 1

What is the pH of distilled water?

7

–7

10

1 × 10 –7

Answers

The value of hydronium ion ought to be 1* 10-^7
In that case, the value of pH can be calculated using the formula:
pH = - Log [H3O+].
pH = - Log [1 * 10^-7]
pH = - [-7]
pH = 7
From this calculation, the correct answer will be A, which is 7.

Is a candle smelling like a pine tree is that a chemical change chemical property physical change or physical property?

Answers

Smell is a type of Physical property

Most acids ionize in solution, and most bases _____ in solution.

ionize

disperse

dissociate

vaporize

Answers

The correct option is DISSOCIATE.
Acids ionize in water producing hydrogen ions while bases dissociates in solutions. Strong acids ionize completely in water while weak acids only ionize partially. Strong bases dissociate completely in solution while weak bases are typically undergo partial dissociation.

Which is a pure substance? A. sugar B. trail mix C. leaf salad D. sugar water

Answers

A. Sugar... Because the others are mixes of things and combinations. Sugar is pure and on its own.

I hope this helps!

Answer:

Explanation:

Sublimation and boiling both happen at the surface of the substance.
a. True
b. False

Answers

This statement is: False

Boiling is vaporization that occurs both below and at the surface of the liquid.
However, evaporation happens at the surface of the substance.

So, if you need to correct this statement, the correction would be:
Sublimation and evaporation happen at the surface of the substance.

Consider the chemical equilibrium of the following reaction CH3COOH CH3COO– (aq) + H+(aq) What will happen to the chemical equilibrium of the solution if CH3COONa is added? The equilibrium will shifts to the right. The equilibrium will shifts to the left. The equilibrium will be unaffected. The equilibrium will be lost.

Answers

Answer: The equilibrium will shifts to the left.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

[tex]CH_3COOH\rightleftharpoons CH_3COO^-+H^+[/tex]

Thus if [tex]CH_3COONa[/tex] is added it will dissociate to give [tex]CH_3COO^-[/tex] and [tex]Na^+[/tex]

[tex]CH_3COONa\rightarrow CH_3COO^-+Na^+[/tex]

Thus as the concentration of [tex]CH_3COO^-[/tex] increases, the equilibrium will shift in a direction where concentration of [tex]CH_3COO_-[/tex] decrease i.e. the dissociation of [tex]CH_3COOH[/tex] will be further depressed i.e the equilibrium will shift to the left.

Answer:

Explanation:

What do Lewis structures show?

Question 7 options:

only electrons that are unavailable for bonding

all but the valence electrons

only valence electrons

all electrons

Answers

Lewis structures only show the valence electrons of an atom in a molecule. Valence electrons exist in the energy level farthest away from the nucleus of an atom. Lewis structures are diagrams showing bonding of atoms with lines, and valence electrons with dots.

Answer: Only the electrons in the outermost shell

Explanation:

Which phrase describes a solution?
A. A homegeneous mixture
B. A graduated substance
C. A heterogeneous mixture
D. A primary mixture of elements

Answers

A. A homogeneous mixture

Answer:

The answer is A. A homegeneous mixture

Explanation:

A chemical solution is the homogeneous mixture of one or more substances dissolved in another substance in greater proportion. A chemical solution is composed of solute and solvent. The solute is the substance that dissolves and the solvent that dissolves it.

Where are the alkali metals, the alkaline earth metals, the halogens, and the noble gases located on the periodic table?

Answers

The Alkali Metals- (Group 1A)can be found (excluding hydrogen) in the first column of the periodic table. They all have 1 valence electron and tend to form +1 cations when forming Ionic bonds with non metals.

The Alkali Earth Metals: (Group 2A) can be found in the second column/group on the periodic table. These elements form +2 positively charged cations when forming Ionic bonds with non metals. They also all have 2 valence electrons.

The Halogens: are the elements that make up the second to last group on the periodic table. These elements include Chlorine, Fluorine, Bromine, Iodine, and Astatine. These elements have 7 valence electrons. The usually form a -1 charged anion when forming ionic bonds with metals.

The Noble gases: the very last group on the periodic table. All these elements have 8 valance electrons. Due to the octet rule these atoms are already very stable and rarely react with other elements.

The alkali metal, the alkaline earth metals, the halogens, and the noble gases are located in the periodic table in group 1, group 2, group 17, and group 18 respectively.

What is the periodic table?

The periodic table is a tabular display of chemical elements. The periodic table is a graphic formulation of the periodic law, which states that the physical and chemical properties of the chemical elements are the periodic functions of their atomic numbers.

The table is arranged in horizontal rows called periods, and the vertical columns are called groups. Elements in the same column group of the periodic table show identical chemical characteristics.

The nonmetallic character increases from left to right in a period, and from down to up across a group, and the metallic character increases in the opposite direction.

The alkali metal and the alkaline earth metals are the elements of the s-block while the halogens and the noble gases are placed in the p-block.

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What is the maximum number of electrons that can occupy the 3rd electron shell

Answers

18. The first shell can occupy 2, the second can occupy 8, (2+6), and the third can occupy 18, (2+6+10). The formula for finding the number of electrons a shell can hold is 2(n^2).

According to electronic configuration there are 18 electrons that can occupy the 3rd electron shell.

What is electronic configuration?

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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What do the words in this group have in common biology chemistry anatomy nuclear physics?

Answers

The words biology, chemistry, anatomy, and nuclear physics are all forms of science. Biology is the study of the inner workings of things, chemistry is the study of the molecular and macro-level of reactions, anatomy is the study of the human body, and nuclear physics is the study of nuclear reactions and states.

Final answer:

Biology, chemistry, anatomy, and nuclear physics are different branches within the field of science.

Explanation:

The words biology, chemistry, anatomy, and nuclear physics all belong to the field of science. They are different branches or subdisciplines within the broader category of science. Biology is the study of living organisms and their interactions with the environment. Chemistry focuses on the composition, structure, properties, and changes of substances. Anatomy is the study of the structure of organisms, especially the human body. Nuclear physics is a branch of physics that studies atomic nuclei and their interactions.

Classify these bonds as ionic, polar covalent, or nonpolar covalent na-f

Answers

An ionic bond is a bond between two ions, one is positive charge and one is negative charge. A polar covalent bond is when 2 electrons are shared between 2 atoms but not in equal strength. A nonpolar covalent bond is when 2 atoms equally share 2 electrons.

How many lithium ions are present in 30.0 ml of 0.600 m li2co3 solution?

Answers

Final answer:

To calculate the number of lithium ions, we need to determine the number of moles of Li2CO3 and then multiply it by 2 (since there are 2 lithium ions for every 1 formula unit of Li2CO3). The number of lithium ions is 0.0360 mol.

Explanation:

To determine the number of lithium ions present in the solution, we need to first calculate the number of moles of Li2CO3 using the given concentration and volume. From the formula Li2CO3, we can see that there are 2 lithium ions for every 1 formula unit of Li2CO3. Therefore, we can multiply the number of moles of Li2CO3 by 2 to calculate the number of lithium ions.

First, we need to calculate the number of moles of Li2CO3:

Moles of Li2CO3 = concentration (mol/L) × volume (L)

Moles of Li2CO3 = 0.600 mol/L × 0.0300 L = 0.0180 mol

Since there are 2 lithium ions for every 1 formula unit of Li2CO3:

Number of lithium ions = 2 × moles of Li2CO3 = 2 × 0.0180 mol = 0.0360 mol

Therefore, there are 0.0360 moles of lithium ions present in 30.0 mL of 0.600 M Li2CO3 solution.

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What is the Lewis dot structure Ch2Cl2

Answers

Assuming it should be CH2Cl2, 20 total valence electrons

Why is identifying unknown compounds important to chemistry?

Answers

Final answer:

Identifying unknown compounds is crucial in chemistry as it helps determine their composition, structure, and properties. This knowledge is essential for predicting behavior, reactivity, and potential applications of compounds.

Explanation:

Identifying unknown compounds is important to chemistry because it allows scientists to determine the composition, structure, and properties of those compounds. By knowing the elements present in a compound, their relative amounts, and the molecular or empirical formula of the compound, chemists can make predictions about its behavior, reactivity, and potential applications. For example, knowing the composition of a compound can help scientists understand its toxicity, stability, solubility, and potential uses in various industries.

Which element among elements 2, 4, and 6 has the lowest ionization energy?

Answers

Element 6 has the lowest ionization energy

Answer:

Element 6 has the lowest ionization energy

Explanation:

The ionization energy increases across the period but decreases down the group of a periodic table.

Which implies that the elements with the lowest ionization energies would be in the bottom left-hand corner of the periodic table. The change in ionization energies is also increases going down the periodic table (by change within a group) than going across the periodic table (by change within a period). From the 3 elements above we could infer that element 6 has the lowest ionization energy.

In the science lab, students are testing solutions as acids or bases. the ph level of solution "x" was determined to be an 8. what is solution "x"?

Answers

Solution 'X" would be a base.

Will all cars have roughly the same amount of force available

Answers

No, all cars will not have the same amount of force available to them. The majority of a car's force comes from the engine of the vehicle. All engines do not have the same amount of power in that some have larger amounts of force and some have smaller amounts of force. This will result in cars having different amounts of available force.

What is the class that includes sedimentary rocks which are deposited from a solution made by organic processes?

Answers

Those described in the question would be classified as non-clastic, biochemical

Final answer:

Biochemical or organic sedimentary rocks are the class of sedimentary rocks that are deposited from a solution made by organic processes. They form from the accumulation of plant and animal debris.

Explanation:

The class of sedimentary rocks that are deposited from a solution made by organic processes is generally referred to as biochemical or organic sedimentary rocks. These form from the accumulation of plant and animal debris. For example, limestone often forms from the calcium carbonate shells of marine organisms.

Another example is coal, which forms from the remains of plants in swamp environments. Organic processes producing significant amounts of biological debris, result in specific types of sedimentary rocks.

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The carbon atoms in large complex molecules are bonded to other atoms with

Answers

covalent bonds i think

The red line of the hydrogen emission spectrum has a wavelength of 656.1 nm. Calculate the energy of one photon

Answers

The formula we can use here is the Plancks equation:

E = h c / ʎ

where h is Plancks constant = 6.626 × 10-34 m2 kg / s, c is speed of light = 3 x 10^8 m/s and ʎ is wavelength = 656.1 x 10^-9 m

Therefore E is:

E = (6.626 × 10-34 m2 kg / s) * (3 x 10^8 m/s) / 656.1 x 10^-9 m

E = 3.03 x 10^-19 J

Final answer:

The energy of one photon of the red line of the hydrogen emission spectrum can be calculated using Planck's equation and it is approximately 3.03 x 10^-19 Joules.

Explanation:

The energy of a photon can be calculated using Planck's equation, E = hv, where 'E' is the energy, 'h' is Planck's constant (6.63 x 10^-34 J.s), and 'v' is the frequency. We can express frequency in terms of speed of light (c) and wavelength (λ) using the equation v = c/λ.

First, convert the wavelength from nm to meters: 656.1 nm = 656.1 x 10^-9 m. Then find the frequency, v = (3.00 x 10^8 m/s) / (656.1 x 10^-9 m) = 4.57 x 10^14 s^-1.

Next, substitute 'v' into Planck's equation to find the energy: E = (6.63 x 10^-34 J.s) x (4.57 x 10^14 s^-1) = 3.03 x 10^-19 J.

Therefore, the energy of one photon of the red line of the hydrogen emission spectrum is approximately 3.03 x 10^-19 Joules.

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