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madreJ [45]
4 years ago
11

Based on the article "Will the real atomic model please stand up?,” describe what Dalton’s theory states about a molecule of wat

er.

Chemistry
2 answers:
solmaris [256]4 years ago
6 0

All water molecules consist of hydrogen and oxygen atoms with a ratio of H: O = 2: 1

<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:

  • 1. The elements are composed of atoms which cannot be subdivided
  • 2. Atoms that make up the same elements have the same properties, mass, and size
  • 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 occurrences

Dalton conducts research on compounds.

Dalton's law of multiple comparisons states that if elements are formed two or more kinds of compounds, if the mass of one of the elements is known to be the same / fixed, then the mass of the second element in the two compounds will have a ratio as a simple integer.

Compounds made up of the same atom will have the same atomic ratio

From Dalton's atomic theory shows that all water molecules are composed of two atoms, namely oxygen and hydrogen and have the same ratio, two hydrogen atoms for every one oxygen atom.

<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, compound, water molecule, ratio

ch4aika [34]4 years ago
5 0

Answer;

According to the Dalton's theory, the description of water molecule is that;

-Water molecules are made of two different kinds of atoms (hydrogen and oxygen atoms).

-All water molecules have twice as many hydrogen atoms as oxygen atoms.

-All water molecules have one oxygen atom for every two hydrogen atoms.

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3 years ago
Determine the mass in grams of 1.6 x 10^-3 mol glucose, C6H12O6
Nat2105 [25]

Answer:

Explanation:

One mole:

  • <em>6.03E23 molecules</em>

One mole of C6H12O6 is<em> 180g, or 180 g/mole</em>.

\text{Multiply the moles (1.6E-3 moles) times the molar mass (g/mole) to get grams. }

\text{The moles cancel, leaving only grams.  The result should be 2 sig figs.}

7 0
2 years ago
3. Round each measurement to three significant figures. Write your
Mekhanik [1.2K]

In scientific notation, the measurement of each figure to three significant measurements are as follows:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

A significant figure is the digits in a number that is dependable and absolutely essential to express the quantity of a figure in positional notation. They are utilized to represent the appropriate degree of precision.

A scientific notation is used to express a large number in an easy decimal way multiplied by its power of 10.

From the given information, in scientific notation, and to three significant figures, we have:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

Therefore, from the above concept, we can conclude that the scientific notation of each figure in three significant figures is shown in bold format.

Learn more about scientific notation here:

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4 0
3 years ago
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