The answer is 18.
This is obtained by multiplying the three oxygen atoms in NO₃, that are inside the parenthesis by the number two outside the parenthesis. The number 2 is there because it comes from associating with Fe ²⁺ .
3×2=6 oxygen atoms present in the formula.
Then multiplied by the 3 that's in front of the formula (that indicates how many molecules).
6 x 3= 18
Answer
is: mass number stays 184, but atomic number changes.<span>
Beta decay is radioactive decay in
which a beta ray and a neutrino are emitted from an atomic
nucleus.
There are two types of beta
decay: beta minus and beta
plus. In beta minus decay (</span>atomic number Z is increased by one, new element is wolfram W) neutron is converted to a
proton and an electron and
an electron antineutrino.
In beta
plus decay (atomic number Z is decreased by one, new element is hafnium Hf), a proton is converted to a neutron and positron and an electron neutrino, so mass number does not change.
Looks on jiskha the answer it on ther couldn’t paste the link for some reason
A covalent compound<span> is made when two or more nonmetal atoms </span>bond<span> by sharing valence electrons. The shared valence electrons between two nonmetal atoms is</span>called<span> a </span>covalent bond<span>. </span>Covalent bonds<span> are </span>formed<span> when two atoms begin sharing electrons.</span>