If I needed to make a carbonated drink (soda), what steps would I
need to take in order to make sure the drink was sweet but stayed
carbonated? How would I make sure the sugar was able to dissolve?
How would I make sure the drink would stay carbonated?
Please help.

Explanation:

The simplest way ta make a carbonated drink is to use seltzer water, club soda, or sparkling mineral water.

1. To sweeten the drink

You could use honey instead of sugar to sweeten your drink. To make a simple honey syrup, just combine some honey with water and heat on medium-high until the honey has dissolved. Then, set it aside to cool.

2. To make sure the drink stays carbonated

To keep the CO₂ from escaping, you could seal the bottle with a wine bottle stopper  — like the one below — or a simple rubber stopper.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.