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Leokris [45]
3 years ago
8

5) What is the volume of 6.70 x 10^15 molecules of propane, C3 H8 at STP?

Chemistry
1 answer:
lisabon 2012 [21]3 years ago
4 0
Divide the number by 6.02 x 10^23 so the measurement is in moles and multiply by 22.4 to convert it into liters
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But-1-ene can be prepared from butan-1-ol. which type of reaction takes place?
slega [8]

Answer:

              Dehydration Reaction

Explanation:

                  Alcohols can be converted into Alkenes using catalytic amounts of acids as a catalysts.

                 The water molecule is removed hence, it is called as dehydration reaction.

                  The reaction is attached.

8 0
2 years ago
What happens to the chemical identity of a substance during a physical change?
klio [65]
Nothing happens because a physical change only changes the appearance of the substance, whereas a chemical change transforms the substance into something completely different.
i.e. (chemical change) wood + fire = ash
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5 0
3 years ago
How are the molecular mass and molar mass of a compound similar and how are they different?
4vir4ik [10]

Answer:

Similarities: both state the mass of chemical species and they have the same numerical value

Differences: molecular mass refers to one single molecule and molar mass refers to one mole of a molecule

Explanation:

The molecular mass is the value of the mass of each molecule and it is measured in mass units (u). It is calculated adding the mass of each atom of the molecule.

The molar mass is the value of the mass of one mole of molecules, which means the mass of 6.022140857 × 10²³ molecules. The unit is g/mol.

For example, we can consider the methane molecule, which has the chemical formula of CH₄:

Molecular mass CH₄ = C mass + 4 x (H mass)

Molecular mass CH₄ = 12.01 + 4 x (1.01)

Molecular mass CH₄ = 16.05 u

Now to calculate the molar mass we multiply the value of the molecular mass by the Avogadro number and convert the units to g/mol:

Molar mass CH₄: 16.05 x \frac{1}{6.022140857 x 10x^{23} } g x 6.022140857 × 10²³ mol⁻¹

Molecular mass CH₄ = 16.05 g / mol

5 0
3 years ago
Is cool-aid a element ,compound or mixture?
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Kool-aid is a mixture.
6 0
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Which activity performed by a chemist is primarily based on an understanding of physics?
Hatshy [7]
Physical science, is the study of the composition, structure, properties and change of matter.[1][2] Chemistry is chiefly concerned with atoms and their interactions with other atoms - for example, [ the properties of the chemical bonds formed between atoms to create chemical compounds. As well as this, interactions including atoms and other phenomena - electrons and various forms of energy—are
4 0
3 years ago
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