When an electron in an atom moves from a higher, less stable level, down to a lower, more stable level, a photon is
1 answer:
Answer:
Emitted
Explanation:
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B. A chemical change has occurred and energy was given off
the formula we is as follows:-
M1V1= M2V2
where
M1=1.2
V1=0.133l
V2=41l
M2=?
1.2 × 0.133 = 41 × M2
0.1596 = 41 × M2
M2 = 0.15960/41
M2 = 0.0038926829
Answer:
13ml
Explanation:
- to prepare dis solution first you need a volumetric flask of 100ml calibrated .
- using dilution formulae u will need 13ml from the stock
- measure 13ml of the 5M stock of the 500ml
- then drop it into the 100ml calibrated flask
- then add water till it reach d mark and you shake thoroughly
NH₄NO₃
NH₄HCO₃
(NH₄)₂SO₃
(NH₄)₃PO₄
