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telo118 [61]
2 years ago
6

Several balls and sticks glued together to represent a molecule

Chemistry
1 answer:
rewona [7]2 years ago
4 0

Answer:

The different elements are represented by their symbols one line shows a single bond and two lines show a double bond. This written representation is called a structural diagram

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The ksp of pbi2 is 1.4 x 10-8. what is the molar solubility of lead(ii iodide in a solution of 0.400 m sodium iodide?
tino4ka555 [31]
The solubility product of a substance us calculated by the product of the concentration of the dissociated ions in the solution raise to the stoichiometric coefficient of the ions. Therefore, we need the dissociation reaction. For this, it will have the reaction:

PbI2 = Pb^2+ + 2I-

We solve as follows:

Ksp = [Pb2+][I-]^2 = <span>1.4 x 10-8
</span><span>1.4 x 10-8 = x(2x)^2
</span><span>1.4 x 10-8 = 4x^3
x = 1.5x10^-3 M

The molar solubility would be </span>1.5x10^-3 M.
8 0
3 years ago
Which of the following most accurately represents John Dalton’s model of the atom? A. a tiny, solid sphere with an unpredictable
valkas [14]

The most accurately represented John Dalton's model of the atom is: C. a tiny, solid sphere with a predictable mass for a given element

<h3>Further explanation</h3>

The development of atomic theory starts from the first term conveyed by Greek scientists who suggested that every substance has the smallest particles so that the word atomos appears, which means it cannot be divided. So, John Dalton, a British scientist put forward the hypothesis about atoms, among others:

  • 1. The elements are composed of atoms which are small particles which cannot be subdivided
  • 2. Atoms that make up the same element have the same properties, mass, and size, while for different elements, the properties are also different
  • 3. Compounds are composed of two or more atoms in a fixed ratio
  • 4. In chemical reactions, atoms after and before a reaction cannot be destroyed, only separation and reassembly occur

Point 3 shows the relationship with The Law of Constant Composition of Proust so that further research on atoms is more developed

Dalton's hypothesis is described as a solid sphere like a very small shot put ball or a bowling ball based on Dalton's hobby in bowling

<h3>Learn more</h3>

Bohr's model of the atom

brainly.com/question/1625635

Rutherford performed the gold foil experiment

brainly.com/question/1859083

The part of an atom that is mostly empty space

brainly.com/question/4089014

Keywords: atom, Dalton, a solid sphere, The Law of Constant Composition

5 0
3 years ago
Read 2 more answers
Geologists divide Earth’s long history into smaller units that make up the geologic time scale.
aleksandrvk [35]

False

Explanation:

The geologic time scale which simplifies earth's long history is broad division of deep time. It consists of a large and small divisions.

  • The geologic time scale is divided into large broad categories; called eons, eras, period and epoch.
  • The scale is merges absolute dating of events that has happened in geologic past and their relative ages.
  • Broad categories on the scale are further simplified into smaller units.
  • Relative age puts events in the order of their appearance using a couple of geologic principles.

Learn more;

A little on geology brainly.com/question/5751004

fossils brainly.com/question/9415077

#learnwithBrainly

8 0
3 years ago
An acid has an acid dissociation constant of 2.8 10–9. What is the base dissociation constant of its conjugate base?
Neporo4naja [7]
The answer is 3.6 x 10^-6
6 0
3 years ago
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Why are both absolute dating and relative dating used to determine the age of fossils?
PilotLPTM [1.2K]
<span>they assign a numerical date to each rock layer studied.</span>
5 0
3 years ago
Read 2 more answers
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