There are 8 neutrons. The mass number subtracted by the atomic number gives you neutrons. if your continuing with isotopes, find the average mass of Oxygen 16
Explanation:
First Question
- The correct chemical formular is ; Al2(SO4)3
Second question
The following applies;
- The mass of the products is the same as the mass of the reactants
- At least one new product formed is a gas
- Molecules are changing into different molecules
Third Question
- Zn + HCl → ZnCl2 + H2
Fourth Question
- The atoms in the original substances regroup and form a different substance
- Matter is conserved
- The same atoms are present before and after the reaction
Answer:a. 1-propanol,
Explanation:
Boiling point depends on the relative molecular mass of the compound and the kind of intermolecular interactions present in the substance. 1-propanol has a relative molecular mass of 60 and posses strong intermolecular hydrogen bonding. The presence of hydrogen bonding is known to lead to an increase in boiling point. As a result of this, it is obvious that 1-propanol has the highest boiling point among other compounds in the list.
3.25 x 10¹⁴m
Explanation:
Given parameters:
Frequency of the radiation = 9.23 x 10⁻⁷hz
Unknown:
Wavelength of the radiation = ?
Solution:
The velocity of electromagnetic radiation is the same as that of the speed of light in vacuums.
Velocity = frequency x wavelength.
Velocity = 3 x 10⁸m/s
Since the unknown is wavelength, we factor it out:
Wavelength = 
Wavelength = 

= 3.25 x 10¹⁴m
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Wavelength brainly.com/question/6352445
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