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2 years ago

Name this alkane.

Chemistry

2 answers:

svetlana [45]2 years ago

7 0

Answer:

no te entiendo pasa

Explanation:

no te entiendo pasa

Mice21 [21]2 years ago

5 0

Answer:

propane

Explanation:

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Which of the following describes the electron sharing between two oxygen atoms? Each oxygen shares one electron with the other.

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The element in Group 14 Period 4 has how many neutrons and is it a metal, nonmetal, metalloid or noble gas.

monitta

Number of neutrons=41, and it is metalloid

<h3>Further explanation</h3>

Group 14⇒valence electron = 4(ns²np²)

Period 4⇒n=4

So electron configuration of the element :

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p² = 32 electron=atomic number

The element with atomic number 32, which is in period 4 and group 14 is Ge-Germanium

There are seven elements that can be classified as metalloids, namely boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), and polonium (Po).

While the mass number: 73

So the number of neutrons = mass number-atomic number

$\tt 73-32=41$

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2 years ago

Watch the animation depicting Rutherford’s experiment and choose which of the following conclusions are correct.a. The atom cont

Lilit [14]

Answer:

a, b, c, d

Explanation:

Rutherford’ atomic model is based on the gold foil experiment. In this experiment, beam of alpha rays was bombarded on thin gold foil. He observed that:

Most of the alpha particles passed through thin foil without any deflection.

Few alpha particles deflected by an angle of 90o.

Based on observation, Rutherford concluded that majority of the space inside the atom is empty.

He explained defection of few alpha particles by assuming that most of the mass is concentrated at the nucleus and positively charged.

Therefore, among given, the correct statements are:

The atom contains a positively charged nucleus.

Positive charge is condensed in one location within the atom.

The majority of the space inside the atom is empty space

The mass of an atom is concentrated at the nucleus

Therefore, the correct options are:

a, b, c, d

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3 years ago

The first order reaction A → B, has k = 2.10. If the initial concentration of reactant A is 1.500 M, how long will it take [A] =

Semenov [28]

Answer:

$ln( \binom{at}{ao}{} ) = - kt$

Explanation:

$ln( \binom{0.6}{1.5} ) = - 2.1t$

$ln(0.4) = - 2.1t$

T = 0.436.

I used the formula for first order reaction.

I hope you get this.

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3 years ago