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elena-s [515]
4 years ago
9

1. Who is the father of atomic theory? 2. Who discovered the electron? 3. Who expressed particles by wave equations? 4. Who rese

arched on radioactivity? 5. Who discovered the "open spaces" model? 6. Who applied quantum theory to atoms? .-Rutherford, -Bohr, -Thomson, -Curie, -Dalton, -Schrödinger
Chemistry
2 answers:
Dimas [21]4 years ago
7 0

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

<em>Father of atomic theory?</em>

Dalton is the father of atomic theory who  said that matter is composed of indivisible component.

<em>Discovery of electron by?</em>

J. J Thomson has discovered the electron by performing an experiment which contain negative charges.

<em>Who expressed particles by wave equations?</em>

Schrödinger expressed that particles have wave nature.

<em>Who researched on radioactivity?</em>

Madam Curie has researched over radioactivity.

<em>Who discovered the "open spaces" model?</em>

Rutherford  discovered the "open spaces" model.

<em>Who applied quantum theory to atoms? </em>

Bohr has applied quantum theory to atom.

                                              Hope this help.



krek1111 [17]4 years ago
6 0
1. Who is the father of atomic theory?
Dalton

2. Who discovered the electron?
<span>Thomson
</span>
3. Who expressed particles by wave equations?
<span>Schrödinger
</span>
4. Who researched on radioactivity?
Curie

<span>5. Who discovered the "open spaces" model?
</span><span>Rutherford
</span>
6. Who applied quantum theory to atoms? 
<span>Bohr</span>
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The Ksp for Cu(OH)2 is 4.8 × 10-20. Determine the molar solubility of Cu(OH)2 in a buffer solution with a pH of 10.1.
Papessa [141]

Answer:

E) 3.0x10⁻¹²

Explanation:

Ksp of Cu(OH)₂ is defined as:

Cu(OH)₂(s) ⇄ Cu²⁺(aq) + 2 OH⁻(aq)

Ksp = [Cu²⁺] [OH⁻]²

When pH is 10.1,  [OH⁻] is:

pOH = 14 - pH

pOH = 3.9

pOH = -log [OH⁻]

<em>[OH⁻] = 1.26x10⁻⁴M</em>

<em />

Replacing in ksp formula:

4.8x10⁻²⁰= [Cu²⁺] [1.26x10⁻⁴]²

<em>3.0x10⁻¹² = [Cu²⁺] </em>

That means the maximum amount of Cu²⁺ that can be in solution is 3.0x10⁻¹²M, thus, molar solubility of Cu(OH)₂ is

<em>E) 3.0x10⁻¹²</em>

3 0
4 years ago
If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, what temperature is the gas?
iogann1982 [59]

If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

First, calculate the moles of the gas using the gas law,

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 5.2 atm

V= 500 mL =0.5 L

n=?

R= 0.082057338 \;L \;atm \;K^{-1}mol^{-1}

T=?

Moles = \frac{mass}{molar \;mass}

Moles = \frac{45 g}{32}

Moles = \frac{45 g}{32}

Moles = 1.40625

Putting value in the given equation:

\frac{PV}{RT}=n

1.40625= \frac{5.2 \;atm\; X \;0.5 \;L}{0.082057338 \;L \;atm \;K^{-1}mol^{-1} X T}

T= 22.53167034 K= 22.53K

Hence, If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.

Learn more about the ideal gas here:

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7 0
2 years ago
What is the difference between a molecular formula and a molecular modle?
ankoles [38]
The molecular formula tell us what elements the atoms are, and how many moles and atoms are attributed toward each element.
The molecular model tells us how the atoms/elements are bonded together.

Molecular formula : CH4

                                  H
                                   l
Molecular model:   H -- C -- H
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<span>                                  H</span>
3 0
3 years ago
Why does hot tea brew faster than cold tea? Provide scientific data.
Ksivusya [100]

Answer:

Increased heat makes all the molecules in the tea/water mix vibrate and move around a great deal more, thus increasing the rate of diffusion, and therefore increasing the rate of brewing.

Explanation:

hope i help lol :)

5 0
3 years ago
How many atoms are in NH₄C₂H₃O₂? Sorry, I'm confused because there are two "H"s: H₄ and H₃. Please explain if this would just be
krek1111 [17]

Answer:

11

Explanation:

NH=4

C=2

H=3

O=2

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