The number of electrons in the given neutral atom is equal to 30.
What is a neutral atom?
A neutral atom is one in which the number of the positive charge is equal to the number of the negative charge. Therefore, the overall charge on the atom is zero. Therefore, that type of atom is called a neutral atom.
For a neutral atom, we generally say that the number of electrons is equal to the number of protons. All chemical elements arranged in the periodic table are neutral.
Given, the number of protons is equal to 30 and the number of neutrons is equal to 34. As the given atom is a neutral atom,
So, the number of electrons = Number of protons.
The number of electrons for the neutral atom = 30.
Therefore, the number of electrons in the atom is 30.
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How does the modern periodic table arrange elements?
Answer:
The periodic table of the elements is ordered in increasing order of the atomic number of the elements (this is their number of protons) and according to the similarity of their properties.
Explanation:
To classify the similarity in the properties, the elements are arranged in 7 rows, periodic calls, and in 18 columns, called groups.
The chemical elements are ordered according to their properties from left to right and from top to bottom.
In the same group, all elements have the same number of electrons in their last layer. This makes the chemical properties of the elements very similar.
The period that an element occupies coincides with its last electronic layer. That is, an element with five electronic layers will be in the fifth period. This generates that the elements that are in the same row have different properties but similar masses.
The table is also divided into four groups, according to the orbital that the outermost electrons are occupying, and these groups are named according to the letter of the orbital referred to.
In summary, due to this classification by similarity in their characteristics, the elements are divided into three broad categories: metals, metalloids and nonmetals, which at the same time are divided into subgroups.
Designing an experiment your family has planted a garden you o serve that some of the plants in the garden have teeth marks In them what is eating the plants
In terms of chemical bonds and electrons, what kinds of changes occur between atoms when substances undergo chemical reactions?
During a chemical reaction there occurs a bond making or bond breaking. Chemical bonds are formed by electron sharing or lose or gain of electrons from atoms.
What is chemical change?A chemical change of a substance is the change in its chemical bond like new bond formation or existing bond breakes in a chemical reaction.There are different types of chemical bonds such as ionic bond, covalent bond, hydrogen bond etc.
Ionic bonds are formed between metals and nonmetal atoms by losing electrons from the metals to the non-metals. Where the atoms are of high electronegativity difference. For example, NaCl is an ionic compound.
Covalent bonds are formed by sharing one or more electrons between atoms based on their valence electrons. For example CH4 is a covalent compound formed by sharing of 4 electrons from carbon and one electron from each hydrogen.
Atoms or molecules when combine together to form products, there occurs regrouping of atoms by bond making or bond breaking by exchange of electrons.
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A chemical reaction involves breaking chemical bonds in reactants and forming new bonds in products, which leads to a change in energy and results in new substances with different properties.
Explanation:During a chemical reaction, there are significant changes in the way atoms are bonded together. The changes can be described in terms of the breaking and forming of chemical bonds and the transfer or sharing of electrons among atoms. Atoms are held together in substances by chemical bonds. During a chemical reaction, these bonds are broken, which leads to the separation of atoms. They subsequently rearrange themselves and form new bonds, resulting in new substances with different properties. The substances we start with are known as the reactants, and the new substances formed are the products. An arrow in the chemical equation represents the direction from reactants to products, which signifies the progression of the chemical reaction. During this process, changes in the energy of the system often occur because breaking old bonds and forming new ones involve either absorption or release of energy.
Waves move fastest in
low-temperature gases.
low-temperature solids.
high-temperature gases.
high-temperature solids.
Answer:
The correct answer is high temperature solids
Explanation:
Please help me thank you.
Vinegar (C2H4O2) and baking soda (NaHCO3) react to form sodium acetate, water, and carbon dioxide.
C2H4O2 + NaHCO3 ?
How many total carbon atoms are expected in these products?
A. 1
B. 2
C. 3
D. 4
Answer: The correct answer is Option C.
Explanation:
Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This means that total mass on the reactant side is equal to the total mass on the product side.
This also means that the total number of individual atoms on the reactant side will be equal to the total number of individual atoms on the product side.
For the given chemical reaction, the reactants are: [tex]C_2H_4O_2\text{ and }NaHCO_3[/tex]
Number of carbon atoms = 3
Number of hydrogen atoms = 5
Number of sodium atoms = 1
Number of oxygen atoms = 5
These number of individual atoms must be present on the product side as well.
Hence, the correct answer is Option C.
What do oxygen (O) and bromine (Br) have in common? They both tend to gain electrons to gain stability. They both have seven valence electrons. They are both halogens. They are both unreactive.
Oxygen as well as bromine were indeed nonmetals, and the majority of nonmetals tend to prefer up electrons to become more stable.
What is nonmetals?Nonmetals include colorless vapors and glossy, high melting point solids; they are chemical elements that often lacking a majority of metallic qualities.
What is electrons?The electron would be a subatomic particle with a negatively elementary charged electric charge.
Therefore, Oxygen as well as bromine were indeed nonmetals, and the majority of nonmetals tend to prefer up electrons to become more stable.
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How many protons and electrons are present in the mg2+ ion?
What is the enthalpy for reaction 1 reversed? reaction 1 reversed: co2→co + 12o2?
What type of metal is Potassium (K); Einsteinium (Es); and Tantalum (Ta)?
How does changing electronegativity affect bond character?
Final answer:
The bond character changes as electronegativity varies, with greater differences leading to a bond with more ionic character, causing unequal electron distribution and partial charges on the atoms.
Explanation:
Electronegativity is a measure of the tendency of an atom to attract electrons or electron density towards itself. The character of a bond—whether it is ionic, polar covalent, or nonpolar covalent—is determined by the difference in electronegativity between the two bonded atoms. When there is a significant difference in electronegativity, the bond is considered ionic, meaning one atom effectively donates an electron to the other. As the electronegativity difference decreases, the bond becomes more covalent, with electrons shared more equally between atoms. In the case of a polar covalent bond, the electrons are shared unequally, leading to a partial charge on each atom and creating a dipole moment (μ = Qr).
The larger the difference in electronegativity, the more polarized the electron distribution in the bond. This causes the atom with higher electronegativity to have a partial negative charge, while the atom with lower electronegativity has a partial positive charge. In summary, as the difference in electronegativity increases, the ionic character of the bond increases, creating a more pronounced uneven distribution of electron density.
For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation.
Reactant Product K Cl O Which element is oxidized? Which element is reduced?
In the given reaction, Chlorine is reduced (its oxidation state changes from -1 to -1), and Oxygen is oxidized (its oxidation state changes from -2 to 0).
Explanation:In the given chemical reaction, KClO4 is the reactant that decomposes into KCl and 2O2 which are the products. Oxidation states for each element on each side of the equation are as follows, K: +1, Cl: –1, and O: –2 in KClO4, and K: +1, Cl: –1, and O: 0 in KCl and O2. In this reaction, Chlorine (Cl) is reduced from an oxidation state of -1 to -1, while Oxygen (O) is oxidized from an oxidation state of -2 to 0.
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object A: has a mass of 2g a volume of .5L
object b: has a mass of 3g and a volume of 5L
water has a density of 1g/L, which object will sink in water?which one Will float? I will you20 points if correct
which example provide the most complete descripition of an object motion? A. the bird watcher follwed the south trailer of five distance of five kilometers in 45 minutes.
B. The lion had to run at 30 km per hour across the Savannah to caught its prey.
C. The golfer sent the golf ball flying toward the cup to score a hole-in-one.
D. The mixer blended the ingredients for the cake in under two minutes,
The golfer sent the golf ball flying toward the cup to score a hole-in-one, provide the most complete description of an object motion. Therefore, option C is correct.
What is motion ?Motion is the shift in an object's location with relation to its environment over a specific amount of time. The following phrases can be used to describe the motion of an object with mass: distance, displacement, and speed.
Translational motion is the term used to describe how an atom can move from one place in space to another. Additionally, molecules composed of several atoms can vibrate because of chemical bonds, which cause the atoms to move about their equilibrium position like springs.
Oscillatory, rotational, transactional, uniform, non-uniform, periodic, circular, and linear motion are only a few examples of the different motion types that can exist.
Thus, option C is correct.
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When converting the volume of water to mass of water, what conversion unit would you use?
A. one milliliter of water equals one milligram of water
B. one liter of water equals one gram of water
C. one liter of water equals one kilogram of water
D. one thousand liters of water equals one kilogram of water
A liter of water contains 1,000 cubic centimeters or 1,000 milliliters. Therefore, 1 Liter= 1,000 grams, or 1 Kilogram. 1 cubic centimeter= 1 milliliter = 1 gram.
how do you measure for acidity or alkalinity?
Explain how calcium, ca2+, and phosphate,po43−, can make a compound with electroneutrality
In a dilution ___ is added to a solution to decrease the concentration of the ___ however the number of moles of ___ will remain constant
During dilution, solvent is added to a solution to decrease the concentration
of the solution however the number of moles of solute will remain constant.
Dilution is the process by which a solvent such as water is added in order to
decrease the concentration of the solution. This is usually done to prepare
some specific substances or to reduce the harsh effect the concentrated
solution can cause.
The number of moles of the solute is unaffected by dilution as it only affects
the concentration of the solution.
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What is a three-dimensional geometric arrangement of particles within an ionic compound?
What substance is a mixture?
Salt
Gasoline
Aluminum
Carbon dioxide
Answer is: gasoline.
Gasoline is a mixture of many different hydrocarbons: alkanes (paraffins), cycloalkanes and alkenes (olefins).
Salt and carbon dioxide are chemical compounds, aluminium (Al) is an chemical element.
Pure substance is made of only one type of atom (element) or only one type of molecule, it has definite and constant composition with distinct chemical properties.
Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.
In which orbital does an electron in a bromine atom experience the smallest?
The electrons that are passed to nadp at the end of the electron transfer chain were obtained from
What types of elements are shown in the polyatomic ions in model 1?
We can see here that the elements that are shown in the polyatomic ions in Model 1 are non-metals.
Polyatomic ions are charged chemical species (ions) composed of two or more atoms covalently bonded together. These ions have an overall electric charge, which is the result of gaining or losing electrons to achieve a stable electron configuration. Unlike monatomic ions, which are single atoms with a charge, polyatomic ions are molecular entities.
These ions play a crucial role in chemical reactions and ionic compounds. When polyatomic ions combine with metal or nonmetal ions, they form ionic compounds with distinctive properties. It's important for students of chemistry to learn and understand the common polyatomic ions and their charges, as they are fundamental to various chemical processes and reactions.
The Model 1 in question that complete the question is seen below:
Beryllium (Be): 1sC2sD, what's C and D?
Answer:
C is equal to 2 and D is equal to 2.
Explanation:
Here C and D represents number of electrons in 1s and 2s orbitals.
Be has 4 electrons. Now, in order write electronic configuration of an atom, electron filling should be started from orbital with lowest energy.
Energy order of orbital with increasing energy: 1s< 2s< 2p< 3s< 3p< 4s< 3d....
So, filling of electron should start from 1s orbital then 2s, 2p, 3s, 3p and so on.
Each orbital can have maximum of 2 electrons.
So electronic configuration of Be is: [tex]1s^{2}2s^{2}[/tex]
Humanists believed in comparing people to animals true or false
Answer: False
Explanation:
Humanist believe that humans as well as other living organism has evolved through time and will continue to evolve.
They believe in the happiness and well-being of the human person.
How many grams is in a 5 pound sample? express your answer in scientific notation with four significant figures. (1 pound = 453.592 grams)?
A) 2.3 x 10^3 g
B) 1.1 x 10^4 g
C) 2.27 x 10^2 g
D) 2.268 x 10^3 g
A sample of 5 lb has a mass, expressed in grams, of 2.268 × 10³ g (Option D).
To convert pounds (lb) to grams (g), we need a conversion factor. In this case, the conversion factor is 1 lb = 453.592 g. A mass of 5 lb, expressed in grams, is:
[tex]5 lb \times \frac{453.592 g}{1lb} = 2.268 \times 10^{3} g[/tex]
A sample of 5 lb has a mass, expressed in grams, of 2.268 × 10³ g.
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A newly discovered element, Y, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267.8 u, and 9.7 percent of the sample is an isotope with a mass of 270.9 u. What is the weighted average atomic mass for this element? 269.4 u 268.1 u 269.0 u 270.6 u
Answer: 268.1 u
Explanation:
Mass of isotope 1 = 267.8 u
% abundance of isotope 1 = 90.3% = [tex]\frac{90.3}{100}=0.903[/tex]
Mass of isotope 2 = 270.9 u
% abundance of isotope 2 = 9.7% = [tex]\frac{9.7}{100}=0.097[/tex]
Formula used for average atomic mass of an element :
[tex]\text{ Average atomic mass of an element}=\sum(\text{atomic mass of an isotopes}\times {{\text { fractional abundance}})[/tex]
[tex]A=\sum[267.8\times 0.903+270.9\times 0.097][/tex]
[tex]A=268.1u[/tex]
Therefore, the average atomic mass of an element is, 268.1 u
Is a mineral found on a gemology expedition likely to be a substance
Complete the equation for the dissociation of cdcl2(aq). omit water from the equation because it is understood to be present.
The dissociation of CdCl2(aq) in the solution is depicted as CdCl2(aq) → Cd²⁺(aq) + 2Cl⁻(aq). It's an essential part of Ionic Chemistry.
Explanation:The dissociation of CdCl2(aq) refers to the process where the compound cadmium chloride, when put in solution (water has been omitted per your instructions), breaks down into its individual ions. This dissociation is represented by the equation: CdCl2(aq) → Cd²⁺(aq) + 2Cl⁻(aq). Here, the CdCl2(aq) molecule breaks apart in water to form one Cd²⁺ cation and two Cl⁻ anions.
The above equation represents the process in Ionic Chemistry where ionic compounds dissociate into their constituent ions in a solution. It's a crucial aspect of the behavior of chemical species in various reactions and processes.
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The lower the ph of a solution, the ______.
a.greater the number of oxygen atoms
b.more acidic the solution
c.less toxic the solution
d.higher the oh— concentration
Answer: b.more acidic the solution
Explanation:
pH is the measure of acidity or alkalinity of a solution. Acids are substances which gives [tex]H^+[/tex] ions when dissolved in water.
[tex]HX\rightarrow H^++X^-[/tex]
pH is calculated by taking negative logarithm of hydrogen ion concentration.
[tex]pH=-\log [H^+][/tex]
[tex]pH=log\frac {1}{H^+}[/tex]
Thus as pH and [tex]H^+[/tex] are inversely related, a solution having lower pH will have more amount of [tex]H^+[/tex] concentration , a lower amount of [tex]OH^_[/tex] concentration and will be more acidic.
The lower the pH of a solution, the more acidic it becomes. The pH level measures the concentration of hydrogen ions in a solution, and a lower pH indicates a higher concentration, hence a higher acidity.
Explanation:The lower the pH of a solution, the more acidic the solution becomes. The pH scale, which ranges from 0 to 14, is used to measure the acidity or alkalinity of a solution. A pH of 7 represents a neutral solution, while a pH below 7 is acidic, and a pH above 7 is alkaline (basic). The pH level quantifies the concentration of hydrogen ions (H+) in a solution. Therefore, a lower pH indicates a higher concentration of hydrogen ions, which translates to a higher acidity.
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