Is Be(OH)2 a strong base​ pleaseeeee I am in hurry I need some one to help me pleassssseeeee​

The mole is used to measure small particles like atoms and molecules.  The 4 moles of silver is equivalent to \(\bold{2.408 x 10^2^4 }\) atoms.

Given here,

The number of atoms

\(\bold{2.408 x 10^2^4 }\)

Number of moles = ?

1 mol of substance = \(\bold{ 6.02 x10^2^3}\)

Hence,

moles of silver,

\(\bold {= \dfrac {2.408 x 10^2^4 } { 6.02 x10^2^3} }}\\\\\bold {= 4 mol}\)

Therefore, the 4 moles of silver is equivalent to \(\bold{2.408 x 10^2^4 }\) atoms.

To know more about mole concept, refer to the link:

https://brainly.com/question/20483253

The relative abundance of isotopes is the number of atoms of a particular isotope divide by the total number of atoms of all isotopes of that element, multiplied 100 percent.

The relative abundance of an isotope is the percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element.

Also relative abundances refers to the relative proportions of the stable isotopes of each element. They are most often quoted as atom percentages

To calculate the percent abundance of each isotope in a sample of an element,  the number of atoms of a particular isotope is usually divide by the total number of atoms of all isotopes of that element and then multiply the result by 100 since it is expressed in percentage.

Mathematically, the formula for relative abundance is given as;

R.A = ( number of atoms of isotope / total number of atoms ) x 100%

Learn more about relative abundance here: https://brainly.com/question/6844925

#SPJ1

The ionic equation:

2Mn\(O^{- }_{4}\) + 5 H2O4 + 6 \(H^{+}\)⇄  2\(Mn^{2+}\) + 10 CO2 + 8H2O

Molarity of KMnO4 is 0.0229M

Molarity:

Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of the amount of substance per unit volume of solution.

Formation of  the ionic equation:

2 × ( Mn\(O^{-}\)4)  + 8 \(H^{+}\) + 5\(e^{-}\) ⇄ \(Mn^{2+}\)  + 4 H2O )

5 × ( H2C2O4  ⇄ 2CO2  + 2\(H^{+}\)  + 2\(e^{-}\) )

_______________________________________

2Mn\(O^{-} _{4}\)  + 5 H2C2O4  + 6\(H^{+}\) ⇄ 2M\(n^{2+}\) + 10 CO2 + 8 H2O

Now we have to find the molarity of the permanganate,

Volume = 28.97ml

mass = 0.1058g

molecular mass = 0.105 × 1000/ 28.97

                          = 3.62g

molecular mass = 158

Molarity of the solution = mass/ molecular mass

                                       = 3.62/ 158

                                       = 0.0229M

Therefore the ionic equation is 2Mn\(O^{- }_{4}\) + 5 H2O4 + 6 \(H^{+}\)⇄  2\(Mn^{2+}\) + 10 CO2 + 8H2O and the molarity of the permanganate solution is 0.0229M.

To know more about the molarity of the solution refer to the link given below:

https://brainly.com/question/26873446

#SPJ4

Answer:

B. 2 electrons are removed from the atom

Explanation:

The charge of an ion of calcium (Ca) is +2, which means that the calcium atom has lost 2 electrons.

Therefore, the correct answer is B. 2 electrons are removed from the atom.

False

Atomic attributes are attributes that cannot be further divided. They are indivisible attributes that represent the smallest possible unit of information in a given context. For example, in a student record, the atomic attributes could be the student ID number, first name, last name, and date of birth.

In the context of database design, an attribute refers to a characteristic or property of an entity or object. Atomic attributes are those that are indivisible or cannot be further broken down into smaller components within the given context.

Atomicity is an important concept in database normalization, which is the process of organizing data in a database to eliminate redundancy and ensure data integrity. The first normal form (1NF) requires that each attribute in a relation (table) should hold only atomic values. This means that a single attribute should not contain multiple values or be composite in nature.

For example, let's consider a table representing employees in a company. The attribute "Name" would typically be atomic because it represents a single piece of information and cannot be further divided into smaller components within the given context. On the other hand, an attribute like "Address" might not be atomic since it can contain multiple elements such as street, city, state, and postal code.

By ensuring that attributes are atomic, it becomes easier to manipulate and query the data, maintain data consistency, and avoid data redundancy. It also helps in establishing a clear and well-defined structure for the database, making it easier to manage and analyze the data effectively.

To know more about Atomicity refer here

https://brainly.com/question/1566330#

#SPJ11

Answer:

Addition

Explanation:edg 2020

Answer:

The correct answer is A.

Explanation:

Edge 2022

Answer:

Yes.

Explanation:

Electric charge cannot change the elemental composition of a substance.

The application of charge to the aluminium foil does not change the composition of the foil and hence the foil will still be made up of aluminium atoms.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/14214017

#SPJ2

Answer:

yes

almost I'm ready to give you answer

The sets in σ(A,B) are the smallest σ-algebra that contains both A and B.

In probability theory and measure theory, a σ-algebra is a collection of subsets of a given set Ω that satisfies certain properties. The notation σ(A,B) represents the smallest σ-algebra that contains both subsets A and B. This means that σ(A,B) consists of all possible subsets that can be formed by taking the union, intersection, and complement of sets in A and B.

To understand this concept better, let's consider an example. Suppose we have a set Ω = {1, 2, 3, 4} and two subsets A = {1, 2} and B = {2, 3}. The σ-algebra σ(A,B) would include the empty set, the set Ω itself, as well as other subsets such as {1}, {2}, {3}, {1, 2}, {2, 3}, and {1, 2, 3}. It would also include their complements, for example, the complement of {1} would be {2, 3, 4}.

The σ-algebra σ(A,B) is important in probability theory as it allows us to define probability measures and study various properties of events and random variables. By identifying all the sets in σ(A,B), we can determine the range of events that can be analyzed within this framework.

Learn more about σ-algebras

brainly.com/question/32708586

#SPJ11

A) The differential equation is dy/dt = (3/50) * 5 - (y/50) * 5.

B) Equilibrium point: y = 30g. It represents the steady-state chlorine concentration where the inflow rate matches the outflow rate.

C) The chlorine amount will approach and stabilize at 30g. No net change occurs as the inflow matches the outflow.

In part A, we are given the information about the rate at which clean water with chlorine is flowing into the drum and being pumped out to maintain the liquid level. The differential equation dy/dt = (3/50) * 5 - (y/50) * 5 models the rate at which chlorine accumulates in the drum over time. The first term represents the inflow rate of chlorine, and the second term represents the outflow rate. By subtracting the outflow rate from the inflow rate, we get the net rate of accumulation of chlorine in the drum.

In part B, we find the equilibrium point(s) by setting the rate of accumulation (dy/dt) to zero and solving for y. The equation (3/50) * 5 - (y/50) * 5 = 0 simplifies to 3 - y/10 = 0, and solving this equation gives y = 30. This means that when the concentration of chlorine in the drum reaches 30 grams, the inflow rate of chlorine matches the outflow rate, resulting in a steady-state concentration.

The practical meaning of this equilibrium value is that the drum will maintain a constant chlorine concentration of 30 grams in the long run, as long as the inflow and outflow rates remain unchanged.

In part C, using the concept of a phase line, we can expect that the amount of chlorine in the tank will approach and stabilize at the equilibrium value of 30 grams in the long run. Since the inflow rate of chlorine is balanced by the outflow rate, there will be no net change in the concentration over time. The system will reach a stable state where the chlorine concentration remains constant. Thus, the chlorine amount will remain at 30 grams indefinitely.

Learn more about differential equation

brainly.com/question/33433874

#SPJ11

Answer:

The heat of vaporization is typically larger than the heat of fusion

Next question answer:

The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

Answer:

First answer

B. The heat of vaporization is typically larger than the heat of fusion

Second answer:

A. The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

As for the two different types of chemical bonding illustrated by Figure A and Figure B, they are the Ionic bond and Polar covalent bond. The properties and descriptions that best illustrate each figure are listed below:Figure AIonic BondThe ionic bond involves the transfer of valence electrons from the nonmetal to the metal ion. There is no sharing of electrons in ionic bonding, and the valence electrons in the anion are transferred to the metal cation, creating an ion-pair. This leads to an electrostatic attraction between the anion and cation, which is the ionic bond's fundamental concept.The Na-Cl bond is a prime example of an ionic bond since sodium is a metal, while chlorine is a nonmetal, and the bond between them is ionic.Polar Covalent BondThe polar covalent bond involves unequal sharing of electrons, as opposed to the ionic bond. Electronegativity differences lead to unequal sharing, and if one atom is more electronegative than the other, it attracts electrons closer to it, creating partial negative and positive charges.The N-H bond is a perfect example of a polar covalent bond because the hydrogen atom has a partial positive charge, while the nitrogen atom has a partial negative charge.Figure BNon-polar Covalent BondA non-polar covalent bond occurs when two atoms share electrons equally between them. Both atoms have the same electronegativity; thus, electrons are evenly shared between them.The C-Cl bond is a prime example of a non-polar covalent bond since both atoms have a relatively similar electronegativity, and there is an equal sharing of electrons.Transder of CloctromThere is no such thing as a transder of cloctrom bond. The correct term is transfer of electrons.CI-CI BondCI-CI bond is a covalent bond between two identical chlorine atoms, representing a diatomic molecule. Since the atoms are identical, there is no difference in electronegativity, and electrons are evenly distributed.Polar Covalent BondThe polar covalent bond involves unequal sharing of electrons, as opposed to the ionic bond. Electronegativity differences lead to unequal sharing, and if one atom is more electronegative than the other, it attracts electrons closer to it, creating partial negative and positive charges.The unequal sharing of electrons is best illustrated by the unequal sharing of electrons in the carbon-oxygen bond.

A. We are aware that the reaction's rate depends on the slowest, or rate-determining, step in the overall reaction mechanism. The first step of the reaction is the one that moves the most slowly in the example reaction mechanism. As a result, just one step (Step 1) would have an impact on the reaction's rate.

As a result, the rate law for the mechanism described is given by –

Step 1.  Cl2 2Cl  (slow)  ---------k1

Step 2.  Cl + C5H10HCl + C5H9  (fast) ---------k2

Step 2.  C5H9 + Cl C5H9Cl  (fast)  ---------k3

Step 1. is the slowest step. So, the reaction rate will depend upon on the rate of Step 1 only.

Hence, the rate law for the reaction is given by –

Rate = k1 [Cl2]

B. A species that is created and then consumed in situation is referred to as an intermediate of a reaction mechanism; hence, reaction intermediates never appear in the final rate law or in the actual reaction itself. The overall reaction in this reaction will show up, and likewise will be included in the rate law, as demonstrated above.

To learn more about Rate Law Reaction:

https://brainly.com/question/8139015

#SPJ1

The correct answer is that the Ka of unkonwn weak acid Ha, at 25°c, if the pH of a 2.5x10^-2m solution of the acid was measured and found to be 4.94 is 52.9x10^-10

The acid dissociation constant determines the difference between strong and weak acids (Ka). The acid dissociates more as Ka increases. Strong acids must thus dissociate more in water. A weak acid, on the other hand, is less likely to ionise and release a hydrogen ion, which results in a less acidic solution.Salt and acid are in a 1/5 to 4/5 ratio. In today's experiment, you will first determine Ka of an unidentified acid by measuring the pH of the pure acid (no salt present). Titrating the acid is the next step to figure out how much base is needed to totally neutralize it. For each answer, you will calculate Ka.

To learn more about Ka click on the ink below

brainly.com/question/29653757

#SPJ4

The correct equation for the single replacement reaction between bromine (Br2) and calcium iodide (CaI2) can be written as:

Br2 + CaI2 → 2BrI + Ca

In this reaction, bromine (Br2) replaces the iodine (I) in calcium iodide (CaI2), resulting in the formation of bromine iodide (BrI) and calcium (Ca).

To write the balanced equation, we ensure that the number of atoms on both sides of the equation is equal. In this case, we have two iodine atoms on the reactant side, so we need two bromine iodide (BrI) molecules to balance the iodine atoms. The calcium (Ca) atom is already balanced.

Therefore, the balanced equation for the single replacement reaction between bromine and calcium iodide is:

Br2 + CaI2 → 2BrI + Ca

Know more about Single replacement reaction here:

https://brainly.com/question/29224660

#SPJ11

To solve this question we will assume that the moles of gas do not change and that the gas behaves like an ideal gas.

For an ideal gas we have that its behavior will be according to the following equation:

Where,

P is the pressure of the gas, in atm

V is the volume of the gas, in liters

n are the moles of the gas

T is the temperature of the gas, in Kelvin

R is a constant, 0.08206 atm.L/mol.K

We have for this gas two states, an initial state (1) and a final state (2), so for each state we can apply the ideal gas law, we will have:

Initial state:

Final state:

Since nR are constants, we can equate both equations:

For each state the conditions of pressure, volume and temperature will be:

P1=1.00atm

V1=195mL = 0.195L

T1=20°c = 293.15K

P2= 600mmHg=0.79atm

T2=60°C=333.15K

V2=Unknown

We clear V2 and replace the known data:

Answer: The final volume of the gas will be 280mL

Answer: Inhalation of alcohol from the wipes has the ability to increase the electrical impulses of the heart leading to elevated heart rate.

Explanation:

When alcohol is inhaled, it bypasses the normal digestive route and enters directly to the lungs where it is absorbed. The alcohol is transported directly into the bloodstream and to the brain.

The immediate absorption of alcohol into the bloodstream increases the sympathetic tone of the nervous system which in turn leads to increase in electrical impulses of the heart.

This can be harmful to individuals that have underlying heart conditions, therefore it's not advisable to be inhaled for a prolonged time.

The 3 ml liquid should be sufficient for a relatively low molecular weight liquid. the molecular weight increases, the volume of liquid becomes smaller.

Say the molar mass of the unkown liquid is provided

then,

boiling point of water at 1 atm = 100 oC = 100 + 273 = 373 K

standard STP temperature = 273 K

STP volume = 22.4 L

Temperature = (373/273) = 1.37

density = 0.65 g/ml

Volume of 3 ml liquid when evaporated

= ((3 x 0.65)g/molar mass x 22.4 x 1.37

So knowing molar mass we can easily calculate the volume occupied by 3 x 0.65 g of liquid in vapor phase.

The 3 ml liquid should be sufficient for a relatively low molecular weight liquid. However as the molecular weight increases, the volume of liquid becomes smaller.

Learn more about molecular weight here : https://brainly.com/question/14596840

#SPJ4

Answer:

oxidized

Explanation:

The oxidation number of an uncombined element is 0, so the oxidation of aluminum in the reactants is 0.

The oxidation number of aluminum in aluminum oxide is +3.

This means the oxidation number of aluminum is increasing, and thus electrons are lost. This means that aluminum is being oxidized.

Answer:

Oxygen or sulfur I believe since they fall in the same group.

Answer:

Oxygen is one of them.

Explanation:

when a big number is behind a compound, it means there is 2 of it.

for example 2Na would mean there is a sodium atom and another sodium atom not joined together, but they're just near.

when there is a 2 (which should be small and at the bottom) after an atom, it means there are 2 of that atom.

i hope this helps

The alkyl group (R) attached to the chiral α-carbon of  L-threonine amino acid is H₃C-CH-OH. The Fischer projection of L-threonine is attached below.

Amino acids can be defined as organic compounds that contain both amino and carboxylic acid functional groups. Most amino acids are α-amino acids, which comprise proteins.

Amino acids are divided according to the positions of the functional groups, such as alpha- (α-), beta- (β-), gamma- (γ-), or delta- (δ-) amino acids. As proteins, amino acids form 2nd largest component of human muscles and tissues.

In the structure of amino acids, R denotes a side chain attached to each amino acid. The carbon atom attached to the carboxyl group (-COO) is called the α–carbon. Amino acids with an amino group (-NH₂) attached directly to the alpha-carbon is known as α-amino acids.

Learn more about amino acids, here:

brainly.com/question/28409615

#SPJ1

Answer:

A. 2

Explanation:

You need to balance the other side so the reactants and products are equal.

Answer:

A hydrocarbon and oxygen

Explanation:

hydrocarbon is being burned, and oxygen is necessary to burn things

To solve such this we must know the concept of Combustion reaction. The  two reactants that are necessary in order for a hydrocarbon combustion reaction to take place are hydrocarbon and oxygen.

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side.

Combustion reaction is a reaction in which a substance, basically hydrocarbons burns in presence of oxygen to produce carbon dioxide and water.  The  two reactants that are necessary in order for a hydrocarbon combustion reaction to take place are hydrocarbon and oxygen.

Therefore, hydrocarbon and oxygen are two reactant that are necessary in order for a hydrocarbon combustion reaction to take place.

Learn more about the balanced equation, here:

https://brainly.com/question/7181548

#SPJ2

Answer:

https://www.calculatorsoup.com/calculators/health/pace-calculator.php

Explanation:

52 mins = 52/60 hour = 13/15 hour

_________________________________

15 = x / ( 13/15 )

x = 15 × ( 13/15 )

x = 13 miles

Thus you travel 13 miles in 52 mins at 15 mile per hour.

The binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond.  Option b

Aminoacyl-tRNA is a complex molecule that plays a crucial role in protein synthesis. It consists of a tRNA molecule covalently linked to an amino acid. The amino acid is attached to the 3' end of the tRNA molecule through an ester bond.

An ester bond is formed between the carboxyl group (-COOH) of the amino acid and the hydroxyl group (-OH) of the ribose sugar at the 3' end of the tRNA molecule. This ester bond is also referred to as an ester linkage. The formation of the ester bond is catalyzed by the enzyme aminoacyl-tRNA synthetase.

The ester bond in aminoacyl-tRNA is essential for protein synthesis. During translation, the aminoacyl-tRNA molecule carries the specific amino acid to the ribosome, where it is incorporated into the growing polypeptide chain. The ester bond is later hydrolyzed, releasing the amino acid for further use in protein synthesis.

In summary, the binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond between the carboxyl group of the amino acid and the hydroxyl group of the ribose sugar in the tRNA molecule.

Option b

For more such question on amino acid visit:

https://brainly.com/question/30265108

#SPJ8

a.  The wavelength of a particle with mass 9.11 × 10⁻³¹ Kg travelling at speed 1.0 × 10⁷ m/s and that of a ball of mass 0. 1Kg travelling at 35 m/s is 1.89 × 10⁻³⁵ m.

b. The significance of these wavelengths is that they indicate the wave-like behavior of particles.

To calculate the wavelength of a particle with mass 9.11 × 10⁻³¹ Kg travelling at speed 1.0 × 10⁷ m/s, we can use the de Broglie equation:

wavelength = h/mv

where h is Planck's constant (6.626 × 10⁻³⁴ J·s)

So, wavelength = 6.626 × 10⁻³⁴ J·s / (9.11 × 10⁻³¹ Kg × 1.0 × 10⁷ m/s)

= 7.27 × 10⁻¹¹ m

For a ball of mass 0.1 Kg travelling at 35 m/s, the wavelength can be calculated using the same equation:

wavelength = 6.626 × 10⁻³⁴ J·s / (0.1 Kg × 35 m/s)

= 1.89 × 10⁻³⁵ m

The significance of these wavelengths is that they indicate the wave-like behavior of particles. Even though we think of particles as having a definite location and momentum, at the quantum level they can also behave like waves with a certain wavelength. The smaller the mass and higher the speed of the particle, the longer its wavelength and the more noticeable its wave-like behavior. For example, the wavelength of a typical baseball traveling at 35 m/s is so small that it's practically negligible. However, for an electron (with a much smaller mass) traveling at a similar speed, the wavelength would be significant and have observable effects.

Learn more about wavelength: https://brainly.com/question/30995316

#SPJ11