Answer:
ethyl acetate layer
Explanation:
This question tests your knowledge of the principle of solvent extraction.
In solvent extraction, there is always an organic layer and an aqueous layer. The ethyl acetate is the organic layer while the sodium bicarbonate is the aqueous layer.
A brominated aromatic compound will be extracted into the organic layer (ethyl acetate layer).
Answer:
A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added.
a)32.670 + 1.2240 = 33.8904
33.8904-14.0 = 19.8904
b)12.080 × 4.050 × 0.231
=54.36 × 0.231
=12.55716
c)(3.051 × 103) ×(2.00 × 10.2)=
314.253 × 20.4 = 6410.7612
Answer:
Assembly points.
Explanation:
Predetermined spots where everyone leaving the building should meet during a fire or fire drill are called assembly points.
This ultimately implies that, an assembly point is a designated safe location or area where different people are instructed to stay while being evacuated from a dangerous area such as during fire, gas explosion, flood or other emergency situations.
Simply stated, an assembly point is mainly a place of safety and succor for victims of a disaster, in the event of an evacuation.
Answer:
100 g of the compound contains 72.36 g of iron and 27.64 g of oxygen.
Ratio of atoms of Fe and O, Fe : O = 72.36/56 : 27.64/16 = 1.292 : 1.727 = 1 : 1.33 = 3 : 4
Therefore, the empirical formula of the compound is Fe3O4.
Explanation:
