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Umnica [9.8K]
3 years ago
9

What is atomic theory

Chemistry
1 answer:
Bezzdna [24]3 years ago
8 0
The atomic theory is the scientific theory that matter is composed of particles called atoms. Atomic theory traces its origins to an ancient philosophical tradition known as atomism.
You might be interested in
5. How many grams of cobalt are in 1.52 x 1024 atoms of cobalt?
klasskru [66]

149 g of cobalt are present in 1.52 x 10^{24} atoms of cobalt.

<u>Explanation</u>:

One mole of an atom is equal to the Avagadro number of the atom.

              1 \ mol \ of \ Co = 6.023\times10^{23} atoms\ of \ Co

The number of atoms per mol is divided by the given atoms of Cobalt.

                =  (1.52 \times 10^{24}) \times \frac{1 \ mol\ Co}{6.023 \times10^{23}\ atoms\ Co}

                = 2.52 mol of Co

To covert, the moles into grams multiply the mole value by its molar mass

The Molar mass of Cobalt is 58.93

                = 2.52 \times 58.93

                = 149 g.      

6 0
3 years ago
What steps are always part of both the process of technological design and the process of scientific investigation? Check all th
valkas [14]
Everything applies. In order to process technological design and scientific investigation everything can be used in either hypothesis or hypothetical design of technology or science.
6 0
3 years ago
Read 2 more answers
How are elements usually found?
Reptile [31]
Naturally in nature.
7 0
3 years ago
Read 2 more answers
What is the type of reaction for the following: C3H8 + O2
erastovalidia [21]

Answer:

combustion reaction

Explanation:

because we have a carbon based compound reaction with oxygen gas to produce carbon dioxide and water.

8 0
3 years ago
Baking soda (NaHCO3) and vinegar (HC2H3O2) react to form sodium acetate, water, and carbon dioxide. If 42.00 g of baking soda re
Setler [38]

Answer:

0.5 mole of CO₂.

Explanation:

We'll begin by calculating the number of mole in 42 g of baking soda (NaHCO₃). This can be obtained as follow:

Mass of NaHCO₃ = 42 g

Molar mass of NaHCO₃ = 23 + 1 + 12 + (16×3)

= 23 + 1 + 12 + 48

= 84 g/mol

Mole of NaHCO₃ =?

Mole = mass / molar mass

Mole of NaHCO₃ = 42/84

Mole of NaHCO₃ = 0.5 mole

Next, balanced equation for the reaction. This is given below:

NaHCO₃ + HC₂H₃O₂ → NaC₂H₃O₂ + H₂O + CO₂

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂

Finally, we shall determine the number of mole of CO₂ produced by the reaction of 42 g (i.e 0.5 mole) of NaHCO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore, 0.5 mole of NaHCO₃ will also react to produce 0.5 mole of CO₂.

Thus, 0.5 mole of CO₂ was obtained from the reaction.

7 0
3 years ago
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