What material would be the best choice for the support beams of a building

Answers

Answer 1

Answer:

Answer:

Steel.

Explanation:

Hello,

Based on the high breaking down, corrosion and shearing resistance steel has, it is by far the best option to be chosen in order to support the beams in a building.

Best regards.

Answer 2

Answer: Steel would be the best choice for support beams

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which atomic particle determines the chemical behavior of an atom the nucleus, neutron, electron, proton or none of these

Answers

The chemical behavior of an atoms is determine by the formation or destruction of chemical bonds. The chemical bonds are the result of the interaction of the electrons of the atoms. Chemical properties of the atoms are given by how attached are the shell electrons attached to the nucleus and how they interact with other atoms. Chemical changes are the result of exchange valence electrons of the atoms. So, the answer is the atomic particle that determines the chemical behavior of an atom is the electron, because it is the particle that is active in chemical bonding.

The electron is the primary atomic particle that determines an atom's chemical behaviour.

Electrons are negatively charged particles that form electron shells or energy levels around an atom's nucleus. They are engaged in the production and breaking of chemical bonds, hence they play an important part in chemical reactions.

The quantity and configuration of electrons in an atom's outermost energy level (valence electrons) are very significant in determining the chemical characteristics of the atom. Because of the identical number of valence electrons, elements in the same group or column of the periodic table frequently show similar chemical behaviour.

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What is electronegativity

Answers

When first looking at the word electronegativity, we see the word electro at the beginning so it has to do with electrons which have a negative charge.

Electronegativity is a chemical property and it's how much an atom will be attracted to somebody else's electrons. An atom's electronegativity is affected by its atomic number which is the number of protons in its nucleus and how far away the valence electrons are from the nucleus. Valence electrons are the outermost electrons.

Electronegativity is a measure of the tendency of an atom to attack a boding pair of electrons

I hope that's help !

A solution has a (oh-) = 8.6 × 10-5 the poh=, ph=, (h+)=

Answers

pOh is calculated by the negative logarithm of hydroxide ions concentration. From the given value, we have:

pOH = -log(8.6 x 10 ^-5)
pOH = 4.07

To calculate the pH we use the relation of pOH and pH, expressed as:

14 = pOH + pH
pH = 14 - 4.07 = 9.93
pH = -log [H+]
[H+] = 10^-9.93 = 1.16 x 10^-3 M

How are mixtures compounds and elements alike?

Answers

elements make up compounds, and when 2 or more compounds are chemically combined it makes a mixture or they are all matter, they have mass and occupy space

How many grams of oxygen are required to react with 10.0 grams of octane (C8H18) in the combustion of octane in gasoline?

Answers

Oh fun, stoichiometry. So the equation for this is C8H18+O2----> CO2+H2O, or
2C8H18+25O2----> 16CO2+18H2O when balanced. 10/114.229 g/mol = .087543... mol, converting to moles by dividing by molar mass. The ratio is 25/2, using the integers in front of the molecules in the balanced equation. so you just multiply .087543... by the ratio. That's 1.09429, which you multiply by the molar mass of O2, 31.9988 g/mol. The answer is 35.02 g O2

35.2 grams of oxygen are required to react with 10.0 grams of octane

$\boxed{\boxed{\bold{Further~explanation}}}$

Complete combustion of Hydrocarbons with Oxygen will be obtained by CO₂ and H₂O compounds.

If O₂ is insufficient there will be incomplete combustion produced by CO and H and O

Hydrocarbon combustion reactions (specifically alkanes)

$\large{\boxed {\bold {C_nH _ (_2_n _ + _ 2_) + \frac {3n + 1} {2} O_2 ----> nCO_2 + (n + 1) H_2O}}}$

For gas combustion reaction which is a reaction of hydrocarbons with oxygen produces CO₂ and H₂O (water vapor). can use steps:

Balancing C atoms, H and last atoms O atoms

Octane combustion reaction

C₈H₁₈ + O₂ ---> CO₂ + H₂O

To equalize the reaction equation we give the reaction coefficients with variables a, b and c while the most complex compounds, namely Octane, we give the number 1

So the reaction becomes

C₈H₁₈ + aO₂ ---> bCO₂ + cH₂O

C atom on the left 8, right b, so b = 8

left H atom = 18, right 2c so 2c = 18 ---> c = 9

Atom O on the left 2a, right 2b + 2c, so 2a = 2b + 2c

2a = 2.8 + 9

2a = 16 + 9

2a = 25

a = 25/2

The equation becomes:

C₈H₁₈ + 25/2O₂ ---> 8CO₂ + 9H₂O or be

2C₈H₁₈ + 25O₂ ---> 16CO₂ + 18H₂O

To find the mass O2, we find the mole first from the mole ratio with Octane

1. We are looking for the octane mole

Mr. octane = 8.Ar C + 18.Ar H

Mr. octane = 8.12 + 18.1

Mr octane = 96 + 18

Mr octane = 114

known octane mass: 10 grams then the mole:

mol = gram / Mr

mol = 10/ 114

mol = 0.088

2. We look for the O₂ mole

because of the ratio of the reaction coefficient between O2 and octane = 25: 2 then the mole of O₂ =

25/2 x 0.088 = 1,1

So that the mass O₂ =

mole. Mr = 1.1 32

mass = 35.2 grams

$\boxed{\boxed{\bold{Learn~more}}}$

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Find the molar mass of vitamin A (C20H30O).

Answers

Just add up the molar masses of each element.

Molar mass of C: 12.011 g/mol
The equation says C20, which means there are 20 carbon atoms in each molecule of Vitamin A. So, we multiply 12.011 by 20 to get 240.22 g/mol carbon.

Molar mass of H: 1.0079 g/mol
The equation says C30, which means there are 30 hydrogen atoms in each molecule of Vitamin A. So, we multiply 1.0079 by 30 to get 30.237 g/mol hydrogen.

Molar mass of O: 15.999 g/mol
The equation says O without a number, which means there is only one oxygen atom in each molecule of Vitamin A. So, we leave O at 15.999 g/mol.

Then, just add it up:
240.22 g/mol C + 30.237 g/mol H + 15.999 g/mol O = 286.456 g/mol C20H30O

So, the molar mass of Vitamin A, C20H30O, is approximately 286.5 g/mol.

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