The object that shows fast motion is said to have a higher speed while the one with slow motion is said to have a slow speed.
Hope that helps it was on googIe
Atomic weight of an element can be calculated as follows:
average atomic weight =
(atomic weight of first isotope)(its percentage of abundance) +
(atomic weight of second isotope)(its percentage of abundance)
average atomic weight = 98.225 amu
atomic weight of first isotope = 97.780 amu
its percentage of abundance = 1 - 0.417 = 0.583
atomic weight of second isotope = ??
its percentage of abundance = 0.417
So, just substitute in the above equation to get the atomic weight of the second isotope as follows:
98.225 = (97.78)(0.583) + (mass2)(0.417)
atomic weight of second isotope = 98.847 amu
This statement is false due to the fact that the ammonia gas has the lower molar mass.
~Hope this helps
I think the answer is C. (Increasing the number of variables in the experiment)
Answer : The correct option is, (B) has fewer subatomic particles than an atom of iron (Fe)
.
Explanation :
The given element is chromium (Cr). The atomic number of chromium is 24.
As we know that the atomic number is either equal to the number of protons or number of electrons.
So, Atomic number = Number of protons = Number of electrons = 24
And we know that mass number is the sum of number of protons and number of neutrons.
Mass number of chromium = 52
Mass number = Number of protons + Number of neutrons
52 = 28 + Number of neutrons
Number of neutrons = 28
And we know that the atomic number of iron (Fe) is 26.
Number of protons = Number of electrons = 26
Mass number of Fe = 56
Number of neutrons = 30
From the given options we conclude that the a neutral atom of chromium has fewer subatomic particles than an atom of iron (Fe).
Hence, the correct option is, (B) has fewer subatomic particles than an atom of iron (Fe)
.
