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astra-53 [7]
3 years ago
10

A student created a ball and stick molecule during the lesson on molecules and atoms. Examine the model shown here. Which statem

ents can be supported by the information in the model. Select All that apply.

Chemistry
1 answer:
Rzqust [24]3 years ago
4 0

A molecular model is a three dimensional representation of a molecule. It shows all the atoms in the molecule.

The statements that can be supported by the information in the model are;

  • The model shows a molecule with 14 atoms
  • The model shows a molecule with two different elements

We can see from the model shown that there are white balls and black balls. Each ball represents an atom of an element.

There are 14 balls in total meaning that there are 14 atoms presents. Each color of balls stands for an element. There are two different colors in the model implying that there are two different kinds of elements in the molecule.

Learn more: brainly.com/question/156574

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Which phrase is an example of what electrostatic forces hold together?
Andreyy89

Answer:

Cs+ and Cl− in CsCl is an example of electrostatic forces that hold together.

Explanation:

The interaction that occurs between atoms that have an electric charge is called electromagnetic force. When the charges are at rest, the interaction between them is called electrostatic force. This force depends on the distance "r" between the atoms.

Depending on the sign of the charges that interact, electrostatic force can be attractive or repulsive. The electrostatic interaction between charges of the same sign is repulsive (two negative charges or two positive charges), while the interaction between charges of the opposite sign (a negative charge and a positive charge) is attractive. In the case of neutral charges against negative or positive charges, no force is generated.

<u><em>Cs+ and Cl− in CsCl is an example of electrostatic forces that hold together. </em></u>In this example you have a positively charged atom (Cs₊) and a negatively charged atom (Cl₋). As they are opposite charges they will attract.

4 0
3 years ago
All amino acids have two ionizable groups (an alpha-amino group with pKa~9.3, and an alpha-carboxyl group with pKa~2.2). Lysine
raketka [301]
The answer will be 9.1 % 
8 0
3 years ago
Acid/base, precipitation, redox, or none:. 1. Ba(ClO3)2(s) ----&gt; BaCl2(s) + 3O2(g). 2. CaO(s) +CO2(g) ----&gt; CaCO3(s)
Aleks04 [339]
There are two equations given in the question. The type of reaction shown can be easily judged, if one takes a closer look at the equations.

1. <span>Ba(ClO3)2(s) ----> BaCl2(s) + 3O2(g) ------- Redox

2. </span><span>CaO(s) +CO2(g) ----> CaCO3(s) -------- None.

I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>
4 0
3 years ago
Calculate the % dissociation of 0.10 M solution of acetic acid (pKa = 4.75)
madreJ [45]

Given :

Molarity of acetic acid solution, M = 0.10 M.

pKa of acetic acid, pKa = 4.75 .

To Find :

Percentage dissociation of 0.10 M solution of acetic acid.

Solution :

We know, pK_a = -log\  K_a

Taking antilog both side, we get :

K_a = 1.78\times 10^{-5}

Since, acetic acid has 1 hydrogen atom to loose , so it is a monoprotic acid.

Now, percentage dissociation of monoprotic acid is given by :

\alpha = \sqrt{\dfrac{K_a}{C}}\\\\\alpha =\sqrt{ \dfrac{1.78\times 10^{-5}}{0.1}}\\\\\alpha =  0.0133\times 100 = 1.33 \%

Hence, this is the required solution.

3 0
3 years ago
if a gas is pumped from a smaller container to a container that is twice size, what happens to the pressure of the gas?
Vaselesa [24]

Answer:

The pressure of the gas would decrease

Explanation:

8 0
3 years ago
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