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Airida [17]
4 years ago
5

Cuál es la definición de un átomo?

Chemistry
1 answer:
SVETLANKA909090 [29]4 years ago
4 0

Answer:El átomo es una unidad básica de materia que consiste en un núcleo central denso rodeado por una nube de electrones cargados negativamente.

Explanation:

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What is the correct definition of speed?
docker41 [41]

Answer:

B

Explanation:

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3 years ago
Can u see water vapour by a microscope?
tigry1 [53]

Answer:

It can be formed either through a process of evaporation or sublimation. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form

Explanation:

hope it help

3 0
3 years ago
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How many moles are in 20 grams of Ca (Calcium)? *
liraira [26]

Answer: The correct is 0.5 moles.

Explanation:

3 0
3 years ago
Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas. What volume of water would be produced by this reac
AlladinOne [14]

Answer: 3.4 L

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given Volume}}{\text {Molar Volume}}=\frac{6.5L}{22.4L}=0.29moles

The balanced chemical equation for reaction of Hydrogen chloride gas with oxygen to form water vapor and chlorine gas.

4HCl(g)+O_2(g)\rightarrow 2H_2O(g)+2Cl_2(g)

According to stoichiometry :

4 moles of HCl produce = 2 moles of H_2O

Thus 0.29 moles of HCl will produce =\frac{2}{4}\times 0.29=0.15moles  of H_2O

Volume of H_2O=moles\times {\text {Molar Volume}}=0.15moles\times 22.4L/mol=3.4L

Thus 3.4 L of of water would be produced by this reaction if 6.5 L of hydrogen chloride were consumed

4 0
3 years ago
Explain the difference between the movement of water molecules at room temperature and at 0 'C.​
Helga [31]

Answer:

at room temperature: -water is in liquid state bcecause of which molecules are freely moving

at 0°C:- it is freezing pointof water in this state water molecule can't move due to which there is no collision and chemical reaction will not take place

Explanation:

if i m right than tag me brilliant

8 0
3 years ago
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