What type of chemical bond links the monomers in a polymer?

Answers

Answer 1

Answer: alkenes such as ethene have at least one double bond in their chains and these join to make a polymer called polyethene but alkanes like ethane have only single bonds

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What is the empirical formula of a compound containing 24.56% potassium, 34.81% manganese, and 40.50% oxygen?

Answers

Assume a 100g sample to make things easier; so 24.56% of 100g is 24.56g, for example. The empirical formula is simply the ratio of the moles of each substance. So convert each to moles so that you can compare them:

24.56g K *(1 mol/39.10g)= .6281 mol K
34.81g Mn *(1mol/54.94)= .6336 mol Mn
40.50g O *(1mol/16.00g)= 2.531 mol O

Remember that we are trying to find the ratio between them. The easiest way to do that is to divide each by the smallest number:

.6281 mol K /.6281 mol = 1
.6336 mol Mn /.6281mol = 1.0
2.531 mol O /.6281 mol =~ 4.0

So you have a ratio of 1:1:4 (there is some degree of approximation that you have to make)
So the empirical formula is:
KMnO4

In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?a. sucrose
c. water
b. carbon dioxide
d. heat

Answers

A reaction in which the reactants splits to produce two or more products is called a decomposition reaction.

It can be represented as:

XY ------> X + Y

The correct answer is:

Option A. Sucrose

This can be explained as:

The reaction for the decomposition of sucrose is given as:

C₁₂H₂₂O₁₁ (Sucrose) + 12 O₂ -----> 12 CO₂ (Carbon dioxide) + 11 H₂O (water)

The reactant of a reaction is written generally on the left side of the reaction.

The reactant is a substance that reacts and undergoes chemical changes to form products.

Therefore, sucrose is the reactant.

To learn more about decomposition reaction, reactants and products follow the link:

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in the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water a. sucrose is a reactant

The curved top surface of a liquid column

Answers

The curved top of a liquid is the meniscus

Answer:

its a meniscus

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what is the volume of a gas at 2.00 atm and 200.0 K if its original volume was 300.0 L at 0.250 atm and 400.0 K

Answers

Given:
P1 = 2.00 atm
T1 = 200.0 K
V2 = 300.0 L
P2 = 0.250 atm
T2 = 400.0 K

Required:
V1

Solution:
P1V1/T1 = P2V2/T2
(2.00 atm) V1 / (200.0 K) = (300.0 L) (0.250 atm) / (400.0 K)
V1 = 18.75 L

Some isotopes of elements are unstable and decay into other, more stable isotopes over time. for example, it takes 153 years for half of a sample of silicon (si) atoms with 14 protons, 14 electrons, and 18 neutrons to decay. what is the name of this specific silicon isotope.a. silicon-14
b. silicon-32
c. silicon-46
d. silicon-153

Answers

The correct answer is option a, silicon-14

Number of electrons = 14

Number of protons = 14

Number of neutrons = 18

Since atomic number is equal to the number of protons, the atomic number of this specific silicon isotope is 14.

Also, mass number is equal to number of protons and number of neutrons. So mass number so this specific silicon isotope is 14 + 18 = 32

The name of this specific silicon isotope is silicon-14.

Silicon-14 is represented as ³²Si₁₄

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.

To know more about electron, here:

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