M{(NH₄)₂Cr₂O₇}=2A(N)+8A(H)+2A(Cr)+7A(O)
M{(NH₄)₂Cr₂O₇}=252.065 g/mol
M(Cr)=51.996 g/mol
m{(NH₄)₂Cr₂O₇}/M{(NH₄)₂Cr₂O₇}=m(Cr)/2M(Cr)
m(Cr)=2M(Cr)m{(NH₄)₂Cr₂O₇}/M{(NH₄)₂Cr₂O₇}
m(Cr)=2*51.996*35.8/252.065=14.770 g
m(Cr)=14.770 g
With the following choices:
State<span> X = lightning; </span>State<span> Y = air.
</span>State<span> X = oxygen; </span>State<span> Y = neon.
</span>State<span> X = oxygen; </span>State<span> Y = ...
</span>
plz add other choices available. if there is no other choice, then
ans is State X = lightning; State Y = air
To see if an equation is balanced, make sure that each side of the reaction has an equal number of the types of atoms. The one that has a mismatch is A
Answer:
there's no photo, I'm sorry
