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2 years ago

Which of the following concepts is shared by quantum theory and the Bohr model?

Chemistry

1 answer:

klasskru [66]2 years ago

5 0

Electrons move about the nucleus in defined orbits.

Explanation:

The Bohr mode of the atom was established based on the quantum mechanics originally developed by Planck.

He suggested that the extranuclear part of the atom consists of electrons in specific spherical orbits around the nucleus. The orbits represents the principal energy levels.

The quantum theory was developed originally by Planck.

He suggested energy exists in form of packets and discrete amount and not in form of flow like waves.

The quantum theory and Bohr mode in this regard as they both agree that electrons and energy are both quantized.

Learn more:

Bohr model brainly.com/question/4986277

#learnwithBrainly

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State one reason for the color change in beaker A

myrzilka [38]

Because it either acids or base

4 0

3 years ago

5 points

Orlov [11]

Answer:

The correct option is (a).

Explanation:

We need to find the product of given numbers.

First number = 29.5

Second number = 240

Product of two numbers = 29.5 × 240

= $\dfrac{295}{10}\times 240$

Zeroes from numerator and denominator get cancelled.

So,

$=295\times 24\\\\=7080$

Hence, the correct option is (a).

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3 years ago

How many moles are present in 54.8 mL of mercury if the density of mercury is 13.6 g/mL?

lesya692 [45]

Answer:

3.72 mol Hg

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Density = Mass over Volume

Explanation:

Step 1: Define

D = 13.6 g/mL

54.8 mL Hg

Step 2: Identify Conversions

Molar Mass of Hg - 200.59 g/mol

Step 3: Find

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

Step 4: Convert

$745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} )$ = 3.71544 mol Hg

Step 5: Check

We are given 3 sig figs. Follow sig fig rules and round.

3.71544 mol Hg ≈ 3.72 mol Hg

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3 years ago

What is the concentration of a 500 mL solution with 25 mol of HF? Write your answer with TWO decimal places and round accordingl

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Answer:

Explanation:

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2 years ago

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