Answer:
B, C
Explanation:
The atoms or ions with the valid Lewis dot structures are B and C.
In A;
The Lewis structure of the carbon is correct. Each of the four dots represent the four valence electrons.
The nitrogen with one dot on top, left and to the bottom and has a charge of minus 3 is wrong. For it to have a charge of -3 it must have 8 lewis dots ( two on the top, right, bottom and to the left)
The nitrogen with four dots (on top, right, bottom and to the left) is wrong.
In B;
An oxygen has two dots on top and bottom and one dot to the left and to the right. This is correct , the 6 dots represent the valence electrons of oxygen.
In C;
A carbon has two dots on top, right, bottom and to the left and a charge of plus four. This is correct because the charge indicates that it has gained four extra electrons so its valence electrons is now 8.
In D;
An oxygen has two dots on top, left and to the bottom and a charge of minus 2. This is wrong because the lewis dots are incomplete. Two dots are missing.
Answer:
C
Explanation:
Li, Na+, K+ are all having the same number of electrons
Answer:
393 cm
Explanation:
Step 1: Given and required data
- Density of liquid methylene bromide (ρ): 2.50 g/mL (2.50 g/cm³)
- Earth's gravity (g): 9.81 m/s²
- Atmospheric pressure (P): 0.950 atm
Step 2: Convert 0.950 atm to Pa (N/m²)
We will use the conversion factor 1 atm = 101325 Pa.
0.950 atm × 101325 Pa/1 atm = 9.63 × 10⁴ Pa
Step 3: Convert 2.50 g/cm³ to kg/m³
We will use the conversion factors:
Step 4: Calculate the height (h) of the liquid column
We will use the following expression.
P = ρ × g × h
h = P / ρ × g
h = 9.63 × 10⁴ Pa / (2.50 × 10³ kg/m³) × 9.81 m/s²
h = 3.93 m = 393 cm
Answer:
(a). <em>CH3CH2CH2Br + CH3COONa ===> CH3COOCH2CH2CH3 + </em><em>NaBr</em><em> </em>
<em>-propylethanoate</em><em> </em>or <em>ethylpropanoate</em>
Another organic product is <em>CH3COOH</em><em> </em><em>(</em><em> </em><em>ethanoic</em><em> </em><em>acid</em><em> </em><em>)</em><em>.</em>
It will be in smaller amounts than the ether
The volume of one mole of a substance is 22.4 L at STP for all GASES.
The principle of molar volume states that, one mole of any gas at STP [Standard Temperature and Pressure] will occupy the same volume as one mole of any other gas at STP. This volume is 22.4 liter/mol and is called the molar volume of a gas.
