CHEMISTRY HIGH SCHOOL

A molecule of butane and a molecule of 2-butene both have the same total number of(1) carbon atoms (3) single bonds
(2) hydrogen atoms (4) double bonds

Answers

Answer 1
Answer: The correct answer is option 1. Butane and 2-butene have the same total number of carbon atoms. They both have four carbon atoms. They differ in there structure since the latter has double bonds on it. As a result of the different structure, they also have different properties.

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How do you study well for a chemistry test?

Answers

Answer:

Learning Chemistry takes time! ...

Dig Deep on practice problems. ...

Do the reading and warm up problems BEFORE lecture. ...

Lab Sections really do matter. ...

Ask lots and lots of questions! ...

Study chemistry when you are awake! ...

Study more efficiently – not just more! ...

Take advantage of study tips from VPTL:

Explanation:

Chemistry requires both memorization and problem-solving, making it a particularly demanding subject. 5. Study two hours for each lecture hour and one hour for each lab hour each week (this is about 12 hours a week for 4 credit hour chemistry courses).

Hope this helps! :D

Which balloon is heavier, inflated or deflated

Answers

The deflated balloon has only the weight of the balloon skin, but the inflated one has the weight of the balloon skin and the air inside. This makes it heavier because air has a weight, even if it is very small it has a weight. If you filled it with helium, you might then think it was lighter but still a balloon filled with helium is still heavier than the deflated one because helium is less dense than air (since it rises) but still has a weight.
Hope this helped and if you need more help then just message me instead ok m:)     
The inflated balloon has more mass because the mass of the air inside of the balloon. The reason it floats is because the inflated balloon is less dense than the deflated one

How many valence electrons will an atom of iron atomic number 26 have? explain why this is.

Answers

if atomic number is 26 than electronic configuration would be 1s2s2p3s3p3d
there are two electrons in 1s
two electrons in 2s
six electrons in 2p
two electrons in 3s
six electrons in 3p
eight electrons in 3d
valence electron is 3 so 3s3p3d = 2+6+8
=16 electrons in valence shell

Which ion was formed by providing the second ionization energy to remove an electron? Ca2+ N3– Fe3+ S2–

Answers

Answer:

                    Ca²⁺

Explanation:

                           Ionization energy is defined as the minimum amount of energy required to knock out the electron from valence shell of an atom in its gaseous state. While, second Ionization energy is defined as the amount of energy required to knock out the second electron from an ion containing +1 charge in gaseous state.

                            Among given options Ca²⁺ is the correct choice because the calcium has lost two electrons i.e. first electron was removed by providing first ionization energy i.e.

                                       Ca  +  1st IE    →    Ca¹⁺  +  1 e⁻

and second electron is was removed by providing second ionization energy i.e.

                                     Ca ¹⁺  +  2nd IE    →    Ca²⁺  +  1 e⁻

\boxed{{\text{C}}{{\text{a}}^{{\text{2 + }}}}} is formed by providing the second ionization energy to remove an electron.

Further Explanation:

The energy that is needed to remove the most loosely bound valenceelectrons from the isolated neutral gaseous atom is known as the ionization energy. It is denoted by IE. The value of IE is related to the ease of removing the outermost valence electrons. If these electrons are removed so easily, small ionization energy is required and vice-versa. It is inversely proportional to the size of the atom.

Ionization energy is further represented as first ionization, second ionization and so on. When the first electron is removed from a neutral, isolated gaseous atom, the energy needed for the purpose is known as the first ionization energy, written as {\text{I}}{{\text{E}}_{\text{1}}}. Similarly, when the second electron is removed from the positively charged species (cation), the ionization energy is called the second ionization energy \left( {{\text{I}}{{\text{E}}_{\text{2}}}} \right) and so on.

The neutral atom corresponding to {\text{C}}{{\text{a}}^(2 + )} is calcium. If second ionization energy is supplied to calcium atom, it results in the removal of two electrons and thus{\text{C}}{{\text{a}}^(2 + )}  is formed. So {\text{C}}{{\text{a}}^(2 + )} can be formed by providing second ionization energy. to the neutral atom.

The neutral atom corresponding to {{\text{N}}^(3 - )} is nitrogen. If second ionization energy is supplied to nitrogen, it results in the formation of{{\text{N}}^(2 + )}, not {{\text{N}}^(3 - )}. So {{\text{N}}^(3 - )} cannot be formed by providing the second ionization energy to the neutral atom.

The neutral atom corresponding to {\text{F}}{{\text{e}}^(3 + )} is iron. If second ionization energy is supplied to the iron atom, it results in the formation of {\text{F}}{{\text{e}}^(2 + )}, not {\text{F}}{{\text{e}}^(3 + )}. So  {\text{F}}{{\text{e}}^(3 + )} cannot be formed by providing the second ionization energy to the neutral atom.

The neutral atom corresponding to {{\text{S}}^(2 - )} is sulfur. If second ionization energy is supplied to the sulfur atom, it results in the formation of {{\text{S}}^(2 + )}, not {{\text{S}}^(2 - )}. So {{\text{S}}^(2 - )} cannot be formed by providing the second ionization energy to the neutral atom.

Therefore, the only ion that can be formed by supplying the second ionization energy is {\text{C}}{{\text{a}}^(2 + )}.

Learn more:

1. Which is the oxidation-reduction reaction:

brainly.com/question/2973661

2. What is the mass of 1 mole of viruses: brainly.com/question/8353774

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: second ionization energy, Ca2+, N3-, Fe3+, S2-, IE1, IE2, first electron, second electron, neutral atom., nitrogen, calcium, iron, sulfur.

___wastes are solid, liquid, or gas wastes that are toxic, flammable, corrosive, reactive, or radioactive.a. solid
b. hazardous
c. domestic

Answers

Answer: Option (b) is the correct answer.

Explanation:

When a substance is used and thrown away which can lead to damage in the environment as it may [produce some toxic or hazardous gases is known as a hazardous waste.

These wastes can be solid, liquid or gaseous.

For example, batteries, kerosene, garden chemicals etc are all hazardous waste.

A domestic waste is a waste thrown by a household which may include paper, vegetable waste, cardboard, yard clippings etc.

Thus, we can conclude that hazardous wastes are solid, liquid, or gas wastes that are toxic, flammable, corrosive, reactive, or radioactive.
It's hazardous m8. :P

How many oxygen atoms are contained in the following chemical formula? 2agno3 a. 2
b. 3
c. 5
d. 6

Answers

It would be: 2*3 = 6 oxygen atoms

OPTION D IS YOUR ANSWER......
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