An independent variable<span> is the </span>variable<span> that is changed or controlled in a scientific </span>experiment<span> to test the effects on the </span>dependent variable<span>. </span>
Natural gas is primarily composed of methane (CH4)
Natural gas is a naturally occurring hydrocarbon mixture which is primarily composed of Methane(CH4), but it also contains ethane,propane and heavier hydrocarbon. In addition it contain small amount of nitrogen, carbon dioxide,hydrogen sulfide and traces amount of water.
I think the answer is force
The molar mass of the carbohydrate : = 304.19 g/mol
<h3>Further explanation</h3>
Given
6.54 g carbohydrate
102.5 g of water
osmotic pressure of 4.61 atm
T = 20+273=293 K
Required
The molar mass
Solution
General formula:

π = osmosis pressure (atm)
M = solution concentration (mol / l)
R = constant = 0.08205 L atm mol-1 K-1
T = Temperature (Kelvin)
Find molarity(M) :
4.61 atm = M . 0.08205 x 293
M = 0.192 mol/L(mol solute per 1 liter solution)
Total mass of solution :
= 6.54 g + 102.5
= 109.04 g
Volume of solution :
= density x mass
= 1.024 g/ml x 109.04 g
= 111.66 ml
= 0.112 L
mol Carbohydrate (solute):
= M x V
= 0.192 x 0.112
= 0.0215 mol
Molar mass of Carbohydrate :
= mass : mol
= 6.54 : 0.0215
= 304.19 g/mol