Answer:
Mass of Fe = 32.55 g
Explanation:
The molar mass of a single Fe atom is 55.845 g/mol
This means that
1 mole of Fe equals = 55.845 g ..............(1)
According to the mole concept,[ [TAG_24]]
1 mole of Fe contains = 
atom..........(2)
If we substitute 1 mole in equation (2) with 55.845 g, it becomes:
55.845 g of Fe contains = atoms
Reversing the equation yields
atoms of Fe correspond to 55.845 g
1 atom of Fe corresponds to 
g
one atom corresponds to
On computation,
one atom corresponds to 32.55 g of Fe
Mass of Fe = 32.55 g
Answer:
The correct response is;
2. takes less than 15 seconds
Explanation:
Graham's law of effusion conveys that
Thus, knowing that the molar mass of neon gas = 20.18 g/mol
And, the molar mass of nitrogen gas = 28.014 g/mol
We deduce
= 0.72
So, the effusion rate of nitrogen gas will be 0.72*15 = 12.73 seconds, which is indeed less than 15 seconds.
Response:
FALSE
Rationale:
Sedimentary rocks are defined as rocks formed through the processes of compaction and cementation. Initially, sediments derived from various locations must accumulate. Over time, these deposited sediments undergo substantial compaction due to the weight of the layers above. This process converts loose sediments into solid rock. This is the process through which sedimentary rocks, comprised of sand-sized particles, are formed. For instance, examples include Shale, Sandstone, and Mudstone.
Thus, both compaction and cementation are crucial in the formation of sedimentary rocks.
Therefore, the statement above is False.
The energy released results in a kinetic energy of 92.2 keV for the products. We should convert keV into Joules, noting that 1 keV equals a kiloelectron volt. The required conversion is: 1.602×10⁻¹⁹ <span>joule = 1 eV
Kinetic energy = 92.2 keV * (1,000 eV/1 keV) * (</span>1.602×10⁻¹⁹ joule/1 eV) = 5.76×10²³ Joules
Next, we can determine the velocity of each He atom from the kinetic energy:
KE = 1/2*mv²
5.76×10²³ Joules = 1/2*(4)(v²)
This solves to give us: v = 5.367×10¹¹ m/s
