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aksik [14]
3 years ago
9

What key assumption of Bohr’s model would a Solar S y stem model of the atom violate? What was the theoretical basis for this as

sumption?
Chemistry
1 answer:
Art [367]3 years ago
6 0

Answer:

See explanation

Explanation:

The solar system consists of the sun at the core surrounded by all the planets in their proper order. Similarly, the Bohr model of the atom upholds Rutherford's planetary model in which the atom was said to have a positive core surrounded by electrons moving in orbits just as the planets orbit round the sun.

The difference between the two models is that electrons are able to move from one energy level to another. This assumption violates the principles of the solar system because the position of the planets are fixed in their orbits.

The theoretical basis behind this assumption is that each spectral line is produced by the transition of electrons from one energy level to another.

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Describe the characteristics<br> of the different sections<br> (families) of the periodic<br> table
ANTONII [103]

Answer: The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods

6 0
3 years ago
A student found the mass of an object to be 26.5 g. To find the volume, the student submerged the object in a graduated cylinder
KonstantinChe [14]

Answer: The density of the object is 1.10 g/ml

Explanation: Density of object = ?

Mass of object = 26.5 g

Volume of object = volume of water displaced = 24.1 ml

Putting values in above equation, we get:

Density: \frac{26.5g}{24.1ml}  = 1.10g/ml

Thus density of the object is 1.10 g/ml

5 0
4 years ago
When mercury(II) oxide is heated, it decomposes into mercury and oxygen gas. How many molecules of oxygen gas are produced if 6.
kifflom [539]

Answer:

9.09*10^{21} molecules O_2

Explanation:

The formula for Mercury(II) Oxide is HgO

Balanced Equation: 2HgO = 2Hg + O_2

Stoichiometry: (6.54g HgO)*(\frac{1molHgO}{216.59gHgO})*(\frac{1molO_2}{2molHgO})*(\frac{6.02*10^{23}molecules O_2}{1molO_2})= 9.09*10^{21}moleculesO_2

5 0
4 years ago
Solutions with high ph values have which of these properties?
Sladkaya [172]

<u><em>Answer</em></u>

  • Correct option is B. feel slippery.

<u><em>Explanation</em></u>

If solution has low pH (0-6) is acidic while with higher high pH (8-14) is basic.

<em>Properties of acid solution</em>

1. Sour taste

2. Turn blue litmus paper into red

3. gives off hydrogen gas when reacted with metal

<em>Properties of basic solution</em>

1. Bitter taste

2. Turn red litmus paper into blue

3. no reactions with metal

4. Feel slippery

3 0
3 years ago
Read 2 more answers
Need little help pls
Julli [10]

Answer:

0.354 molal

Explanation:

The molarity (M) or the concentration of a solution is defined as the number of moles of a compound in the solution per liter of solution (mol/L), whereas molality, is defined as the number of moles of a compound in the solution per kg of the compound (mol/kg).

Given that the density of the solution is 1.202 g/mL, which is equivalent to 1.202 kg/L. Since the prefix mili- denotes a factor of one thousandth ( 10^{-3} ) and kilo- denotes a factor of one thousand ( {10}^3 ),

1.202 \ \frac{g}{mL} \ = \ 1.202 \ \frac{g}{(10^{-3}) L} \ = \ 1.202 \ \frac{{10}^3g}{L} \ = \ 1.202 \ \frac{kg}{L}.

To calculate the corresponding molality of the solution, the formula

Molality \ (mol/kg) \ = \ \frac{Molarity \ (mol/L)}{Density \ (kg/L)} is used.

Therefore,

Molality \ = \ \frac{0.426 \ mol/L}{1.202 \ kg/L} \ = \ 0.354 \ mol/kg \ \ (3 \ s.f.)

4 0
3 years ago
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