Answer:
To calculate the volume of 0.2 moles of H₂O (water), we need to use the relationship between moles, volume, and molar concentration. The molar volume of a gas at standard conditions (0°C and 1 atm pressure) is approximately 22.4 liters/mol. However, since water is in liquid form, we'll need to consider its density to calculate the volume.
The molar mass of water (H₂O) is approximately 18.01528 g/mol.
Given:
Moles of H₂O = 0.2 moles
Molar mass of H₂O = 18.01528 g/mol
We can calculate the mass of 0.2 moles of H₂O:
Mass = Moles × Molar mass
Mass = 0.2 moles × 18.01528 g/mol = 3.603056 g
Now, let's convert the mass to volume using the density of water. The density of water at room temperature (around 20°C) is approximately 1 g/cm³.
Given:
Mass = 3.603056 g
Density of water = 1 g/cm³
Volume = Mass / Density
Volume = 3.603056 g / 1 g/cm³ = 3.603056 cm³
So, the volume of 0.2 moles of H₂O is approximately 3.603 cm³ at room temperature and pressure.
Explanation:
(2) Aluminum reacts with sulfuric acid.
(3) Aluminum conducts an electric current.
(4) Aluminum has a density of 2.698 g/cm3 at STP.
The correct answer as to which statement describes a chemical property of aluminum would be that it reacts with sulfuric acid.
There are two properties of every substance - physical and chemical properties.
Physical properties refer to the characteristics that can be observed without altering the substance while chemical properties refer to the characteristics of undergoing chemical changes in reactions.
Physical properties include color, boiling and melting point, hardness etc., while chemical properties include reactivity, toxicity, flammability, etc.
All the options have to do with physical properties of aluminum except its reactivity with sulfuric acid. The equation of reaction is as follows:
Al + H2SO4 ---> Al2(SO4)3 + H2
More on the chemical properties of aluminum can be found here: brainly.com/question/536562
Answer:
The correct answer is option A) Oxidation
The release of energy through the removal of hydrogen from a molecule is referred to as oxidation. In this process, energy is often released which can be utilized by cells for different functions.
The release of energy from a molecule by the removal of hydrogen is known as A) Oxidation. In biochemical reactions, oxidation refers to the process in which electrons are removed from a molecule, usually by removing a hydrogen atom (which consists of one proton and one electron). This process often releases energy that can be used by cells for various functions. Thus, through oxidation, molecules such as carbohydrates or fats can be broken down to release energy used for cellular activities.
Learn more about Oxidation here:
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six
eight
nine
Answer:
eight
Explanation:
In the first stage of DNA replication each DNA molecule replicates into two daughter DNA. In the second stage of DNA replication each of the two daughter DNA molecule replicates into two daughter DNA, thus forming a total of four DNA molecules. In the third stage of DNA replication each of the four daughter DNA molecule replicates into two daughter DNA, thus forming a total of eight DNA molecules.