Answer:
I would expect to extract the acetic acid.
Explanation:
In the first step, since we are adding a concentrated acid,<u> it will react with the bases present in the mixture (diethylamine and ammonia) </u><u>forming salts</u><u>, </u><u>which are soluble in water</u>. Therefore, after draining the aqueous layer, we will have phenol and acetic acid left in the organic layer.
In the second step, we are adding a diluted base, so it will react with a strong acid. This compound is acetic acid, and its salt will be present in the aqueous layer. Phenol will be left on the organic layer.
The Earth is tilted, so it will be lit by different parts of the Sun as it orbits.
Answer:
PbBr₄
C₂O₆
Al₂S₃
Explanation:
Lead (IV) bromide
This is an ionic compound. Ionic compounds do not tell you how many of each atom you have in the name. You have to figure out how much there is based on the charges of the atoms.
The (IV) means that lead has a charge of +4. The charge is put in parentheses since lead is a transition metal, and the charge of a transition metal can vary. Bromine, on the other hand, is always assumed to have a charge of -1. When making a molecular formula, you need to have enough of each atom so that the charges cancel out.
Dicarbon hexoxide
This is a covalent compound. Covalent compounds will tell you how much of each atom you have in the name.
Dicarbon means two carbons. Hexoxide means six oxygens.
Aluminum sulfide
Aluminum sulfide is an ionic compound.
Aluminum has a charge of +3. Sulfur has a charge of -2.
V=84.0 mL = 84.0 cm³
m=609.0 g
p=m/v
p=609.0/84.0=7.25 g/cm³
Answer: The number of molecules of gas the flask contains is ![0.674\times 10^{23}](https://tex.z-dn.net/?f=0.674%5Ctimes%2010%5E%7B23%7D)
Explanation:
According to ideal gas equation:
P = pressure of gas = 1 atm (STP)
V = Volume of gas = 2.50 L
n = number of moles = ?
R = gas constant =
T =temperature = 273K (STP)
According to Avogadro's law:
1 mole of gas at STP contains =
molecules
Thus 0.112moles of gas at STP contains =
molecules
The number of molecules of gas the flask contains is ![0.674\times 10^{23}](https://tex.z-dn.net/?f=0.674%5Ctimes%2010%5E%7B23%7D)