Answer:
1.2 × 10⁸ m
Explanation:
You want to convert metres to nanometres.
Recall that the multiplying prefix nano- means × 10⁻⁹, so
1 nm = 1 × 10⁻⁹ m
The conversion factor is either 
or 
.
You choose the one that has the desired units (nm) on top. Then
539.421ml would be the correct conversion
Answer:I need it
Explanation: I have the same quision in my chemistry exam but i dont have the answer
Answer:
1(a) N = 3
(b) N = 0
(c) N = 5
(d) N = -2
(2) Molecular formula for benzene is C6H6
Explanation:
1(a) N02 1-
N + (2×-2) = -1
N-4 = -1
N = -1+4 = 3
(b) N2
2(N) = 0
N = 0/2 = 0
(c) NO2Cl
N + ( 2×-2) + (-1) = 0
N - 4 - 1 = 0
N - 5 = 0
N = 0+5 = 5
(d) N2H4
2(N) + (4×1) = 0
2N + 4 = 0
2N = 0 - 4 = -4
N = -4/2 = -2
(2) Molcular mass of benzene = 78g/mole = (6×12g of carbon) + (6×1g of hydrogen) = 72+6 = 78g/mole
Therefore, molecular formula for benzene is C6H6
It is absorbing because it is going through endothermic process (absorbing heat) and the change in color means it is undergoing a chemical reaction
