6.28 mol O2 × 2 mol H2 / 1 mol O2 = 12.56 moles H2
Answer:
We have 0.29 g of hydrocarbon producing 448ml of CO2 at STP. Therefore, the empirical formula of the hydrocarbon is C2H5, and n equals 2; hence, the molecular formula will be C4H10
Answer: The answer is (a)Magnesium
Explanation:
Step 1:
Determine the number of moles for each sample listed.
a)Magnesium
n=mass/atomic mass
n=100.0/24.305
n=4.11 moles
b)Zinc
n=100.0/65.38
n=1.53 moles
c)Silver
n=100.0/107.87
n=0.93 moles
d)Calcium
n=100/40.078
n= 2.30 moles
Step 2
Calculate the number of atoms by multiplying the number of moles by Avogadro's number
a)Magnesium
number of atoms=4.11 * 6.022*10^23
= 2.45*10^24 atoms
b)Zinc
number of atoms=1.53 * 6.022*10^23
= 9.21*10^23 atoms
c)Silver
number of atoms=0.93 * 6.022*10^23
=5.60*10^23 atoms
d)Calcium
number of atoms=2.30 * 6.022*10^23
=1.39*10^24 atoms
According to the calculations above, the sample of Magnesium possesses the greatest quantity of atoms
The presence of acidic hydrogens indicates that the hydrogen atoms in the molecule can release H⁺ ions. In the non-cyclic AMP molecule, which is adenosine monophosphate (a nucleotide also known as 5'-adenylic acid), acidic hydrogens in the functional group confer acidic properties on the molecule.
Response:
In this reaction, 2 electrons are transferred.
Justification:
Oxidation involves losing electrons by an atom, ion, or molecule. Conversely, reduction pertains to the gain of electrons by an atom, ion, or molecule.
In oxidation-reduction reactions, both oxidation and reduction occur simultaneously.
This means that redox reactions entail the transfer of electrons among chemical species. They are also referred to as electron transfer reactions due to the exchanged particle being the electron.
In this case:
Zn(s) ⇒ Zn²⁺(aq) + 2 e⁻
2 Ag⁺(aq) + 2 e⁻ ⇒ 2 Ag(s)
Thus, zinc metal donates two electrons to create zinc(II) ions, and each of the two silver ions gains an electron to form two silver atoms.
Consequently, Zn acts as a reducing agent (the reducing agent is the one that donates the electrons, oxidizing itself), while AgNO3 functions as an oxidizing agent (the oxidizing agent traps the electrons, reducing itself).
Ultimately, as noted, 2 electrons are transferred in this reaction.
