Answer:

Explanation:
Data provided:
Charge on the glass rod, Q = 0.680 μC = 0.680 × 10⁻⁶ C
Charge on the silk cloth, q = 0.590 μC = - 0.590 × 10⁻⁶ C
Distance between glass rod and the silk cloth, r = 11.0 cm = 0.11 m
now,
The force between (F) the charges is given as:

where,
k is the Coulomb's constant = 9 × 10⁹ N.m²/C²
on substituting the respective values, we get

or

Answer:
Silicon can be used to make glass. So your 3rd option.
Explanation:
Answer:
The product will be propanoic acid .
Explanation:
Under the action of strong oxidizing agent that is potassium dichromate in an acidic medium primary oxidizes the primary alcohols into carboxylic acid .

So, when propanol is treated with potassium dichromate in an acidic medium it get converted into propanoic acid.

Answer:
Your notation is a bit confusing, let me write it more clearly.
Explanation:
( Temperature in °F − 32) × 5/9 = Temperature in °C
A.<span>.Glucose and carbon dioxide</span>