Answer:
Grey precipitate implies the presence of silver ions
Yellow precipitate implies the presence of lead II ions
Explanation:
Qualitative analysis provides us a quick method of identifying ions present in a sample by chemical reactions involving simple reagents. Precipitates having a unique colour is formed. The identity of ions in the sample is deduced from the colour of precipitate obtained when particular reagents are added.
In the question, a precipitate containing silver ions upon standing turn into grey colour. Similarly, lead II ions give a yellow precipitate.
North Dakota and Michigan because it has to be 32 Farenhieht or less to snow
3) hydrogen and oxygen atoms forms water
Answer:
n C2H5OH = 0.2496 mol
Explanation:
- moles (n) = mass / molecular weight
∴ m C2H5OH = 11.5 g
∴ Mw C2H5OH = (2)(12.011) + (6)(1.00794) + 15.9994 = 46.069 g/mol
⇒ n C2H5OH = (11.5 g)/(46.069 g/mol) = 0.2496 mol C2H5OH
Smell is a huge part, some bacteria have a unique smell. Depending on oxygen present..... fermentation for some bacteria. Can be noticed through a pH indicator in a media.
<span>Also many differential stains will assist in this.... </span>
<span>Gram, Capsole, Spore...ect.</span>
